ORCID Profile
0000-0003-0500-4863
Current Organisations
Curtin University
,
SMS group GmbH
,
Technische Universität Bergakademie Freiberg
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Resources Engineering and Extractive Metallurgy | Agriculture, Land and Farm Management | Electrochemistry | Mineral Processing | Water And Sanitary Engineering | Process Metallurgy | Environmental Technologies | Sustainable Development | Physical Sciences Not Elsewhere Classified
ANZSRC Socio-Economic Objective (SEO)
Basic metal products (incl. Smelting) | Concentrating processes of other base metal ores | Environmental health | Cardiovascular system and diseases | Waste management and recycling | Chemical sciences | Physical sciences |
Related Links
Publications
Sustainable materials processing and production—TMS 2010 materials and society symposium
Publisher: Springer Science and Business Media LLC
Date: 08-2010
Definitions and Terminology
Publisher: Elsevier
Date: 2014
The design and management of material cycles—towards a functional specification for an awareness-tool
Publisher: Elsevier
Date: 2000
Contributions to the Ohmic Drop in the Electrolysis of ZnCl2in a Molten Chloride Electrolyte
Publisher: Springer Science and Business Media LLC
Date: 10-2004
Comprehensive processing of low grade sulphidic molybdenum ores
Publisher: Elsevier BV
Date: 11-2002
Towards a generalized catalogue for the identification of reaction kinetics in metallurgy and minerals processing using neural nets
Publisher: Elsevier BV
Date: 12-1994
Computational Fluid Dynamics (CFD) Investigation of Submerged Combustion Behavior in a Tuyere Blown Slag-fuming Furnace
Publisher: Springer Science and Business Media LLC
Date: 13-06-2012
Simulating the shredding process of multi-material structures for recyclability assessment
Publisher: Elsevier BV
Date: 08-2023
A particle packing algorithm for packed beds with size distribution
Publisher: Springer Science and Business Media LLC
Date: 04-03-2008
A Fundamental Metric for Metal Recycling Applied to Coated Magnesium
Publisher: Springer Science and Business Media LLC
Date: 06-2008
The intelligent supervisory control of submerged-arc furnaces
Publisher: Springer Science and Business Media LLC
Date: 12-1996
DOI: 10.1007/BF03223269
Modelling the co-ordination number of a packed bed of spheres with distributed sizes using a CT scanner
Publisher: Elsevier BV
Date: 03-2006
Challenges of digitalizing the circular economy: Assessment of the state-of-the-art of metallurgical carrier metal platform for lead and its associated technology elements
Publisher: Elsevier BV
Date: 06-2018
The simulation and identification of metallurgical kinetic processes using a generalised kinetic rate equation and trained neural nets
Publisher: Elsevier BV
Date: 1994
Flue Dust Reactions and Sticking Mechanisms in a Copper Flash Smelting Furnace Waste Heat Boiler: A Sampling Study
Publisher: Springer Science and Business Media LLC
Date: 17-05-2023
Fundamental limits for the recycling of end-of-life vehicles
Publisher: Elsevier BV
Date: 04-2006
Informal electronic waste recycling: A sector review with special focus on China
Publisher: Elsevier BV
Date: 04-2011
DOI: 10.1016/J.WASMAN.2010.11.006
Abstract: Informal recycling is a new and expanding low cost recycling practice in managing Waste Electrical and Electronic Equipment (WEEE or e-waste). It occurs in many developing countries, including China, where current gaps in environmental management, high demand for second-hand electronic appliances and the norm of selling e-waste to in idual collectors encourage the growth of a strong informal recycling sector. This paper gathers information on informal e-waste management, takes a look at its particular manifestations in China and identifies some of the main difficulties of the current Chinese approach. Informal e-waste recycling is not only associated with serious environmental and health impacts, but also the supply deficiency of formal recyclers and the safety problems of remanufactured electronic products. Experiences already show that simply prohibiting or competing with the informal collectors and informal recyclers is not an effective solution. New formal e-waste recycling systems should take existing informal sectors into account, and more policies need to be made to improve recycling rates, working conditions and the efficiency of involved informal players. A key issue for China's e-waste management is how to set up incentives for informal recyclers so as to reduce improper recycling activities and to ert more e-waste flow into the formal recycling sector.
Process Knowledge, System Dynamics, and Metal Ecology
Publisher: Wiley
Date: 2004
Abstract: A key principle in industrial ecology is the cyclic use of materials, a characteristic of natural ecosystems but a challenge in economic systems. Indeed, in society, metal retention, that is, the ongoing use or ready availability of metal in the economy between the life‐cycle stages of resource extraction and final disposal back into the lithosphere, is finite because of the limited grade of secondary (recycled) metals. Currently, the utility of metals is maintained through the addition of high primary (virgin) metals, bringing the concentration of the recycled metals to desired levels. This mixing with high‐grade primary metals keeps these recycled metals in the cycle. Long term, this practice of dilution of the undesired substances prevents a closure of the material cycles, whereas recovery without dilution reduces the quality (or quantity) of recycled metals. Metals participate in a system of linked cycles and thus cannot be produced or recovered independently from one another. The metal wheel is introduced in this article as a concise but powerful instrument for the communication of available process knowledge in process metallurgy, the science and technology of producing metals from natural ores and societal raw materials, residues, and end‐of‐life products. It summarizes the chemical and physical linkages between metals found in ores and the set of metallurgical processes that has been developed to accommodate these linkages. A dynamic mass‐flow model is introduced to characterize the global metal cycles. The model facilitates the visualization of the evolution of their structure and technological content. To illustrate the interdependency of metal cycles using the metal wheel and the dynamic model, the transition to lead‐free solder is evaluated. Neglect of metal‐cycle linkages and dynamics in policy formulation may lead to a shortage of lead substitutes. In case of an extended ban on lead, both the availability and recovery of a range of metals will be affected.
Cost versus environment? Combined life cycle, techno‐economic, and circularity assessment of silicon‐ and perovskite‐based photovoltaic systems
Publisher: Wiley
Date: 17-04-2023
DOI: 10.1111/JIEC.13389
Conceptual process design as a prerequisite for solving environmental problems; a case study of molybdenum removal and recovery from wastewater
Publisher: Elsevier BV
Date: 02-2004
Exergy losses during recycling and the resource efficiency of product systems
Publisher: Elsevier BV
Date: 12-2007
Process simulation and digitalization for comprehensive life-cycle sustainability assessment of Silicon photovoltaic systems
Publisher: IEEE
Date: 20-06-2021
The demand response potential in copper production
Publisher: Elsevier BV
Date: 08-2022
Letter to the editor
Publisher: Elsevier BV
Date: 10-2011
CFD Modelling for control of hazardous waste incinerator
Publisher: Elsevier BV
Date: 2003
Recycling light metals: Optimal thermal de-coating
Publisher: Springer Science and Business Media LLC
Date: 08-2008
Monitoring of metallurgical reactors by the use of topographic mapping of process data
Publisher: Elsevier BV
Date: 11-1999
Separation of rare earth elements from contaminants and valuable components by in-situ precipitation during the hydrometallurgical processing of eudialyte concentrate
Publisher: Elsevier BV
Date: 06-2020
Process Modeling and Optimization of a Submerged Arc Furnace for Phosphorus Production
Publisher: Springer Science and Business Media LLC
Date: 30-07-2010
Industrial ecology and waste infrastructure development: A roadmap for the Dutch waste management system
Publisher: Elsevier BV
Date: 03-2006
UNDERSTANDING OF HAZARDOUS WASTE INCINERATION THROUGH COMPUTATIONAL FLUID-DYNAMICS SIMULATION
Publisher: Informa UK Limited
Date: 14-05-2002
Abstract: Rotary kiln incinerators are widely used in the incineration of hazardous wastes of various types. However, the complex transport and chemical processes within the kiln system are still not well understood. The complete destruction of hazardous compounds depends very much on gas mixing behavior of different air and waste streams, the distribution of gas temperature and residence time within the kiln and the secondary combustion chamber (SCC). Due to large variations of waste types and difficulties in feed characterization (physical, chemical and thermal properties), the incineration process meets great challenges in a smooth operation, with substantial fluctuations of gas temperatures within the system. The temperature fluctuations lead to uncertainties in the process chemistry and difficulties in emission control. The newly enforced regulations from the European Union with stricter emission levels require a better understanding of the incineration process and improved process control for lower emissions and a better environmental impact. In order to get better understanding of the incineration process within the rotary kiln system, research was carried out to study the kiln behavior in relation to better process control. One of the focuses was on the process simulation by using Computational Fluid-dynamics (CFD) to characterize gas flow, temperature distribution and waste combustion in the rotary kiln incinerator. Temperature measurement of the operating rotary kiln incinerator at AVR-Chemie, located at the Rotterdam harbor in The Netherlands, was conducted to validate the CFD model and to provide the information to kiln operators at AVR. This paper will address the environmental issues related to the hazardous waste incineration, and summarize the results from the current research project for the simulation of gas flow and mixing, combustion heat transfer, and new ideas to use CFD simulation results for process control of an incineration plant.
Evaluation of Recyclability of a WEEE Slag by Means of Integrative X-Ray Computer Tomography and SEM-Based Image Analysis
Publisher: MDPI AG
Date: 30-03-2020
DOI: 10.3390/MIN10040309
Abstract: Waste of electrical and electronic equipment (WEEE) is one of the fastest growing waste streams globally. Therefore, recycling of the valuable metals of this stream plays a vital role in establishing a circular economy. The smelting process of WEEE leads to significant amounts of valuable metals and rare earth elements (REEs) trapped in the slag phase. The effective manipulation of this phase transfer process necessitates detailed understanding and effective treatment to minimize these contents. Furthermore, an adequate process control to bring these metal contents into structures that make recycling economically applicable is required. Within the present study, a typical slag from a WEEE melting process is analyzed in detail. Therefore, the material is investigated with the help of X-ray computed tomography (XCT) and scanning electron microscopy (SEM)-based mineralogical analysis (MLA) to understand the typical structures and its implications for recycling. The influencing factors are discussed, and further processing opportunities are illustrated.
A generalized neural-net kinetic rate equation
Publisher: Elsevier BV
Date: 04-1993
Aluminium Recycling and Environmental Issues of Salt Slag Treatment
Publisher: Informa UK Limited
Date: 10-2005
DOI: 10.1080/10934520500183824
Abstract: Environmental friendly recycling is the trend toward total recycling of aluminium metal. In the secondary aluminium industry, due to the complexity of compositions and contaminants in the various types of aluminium scraps, an understanding of the behavior of different scraps during melting is crucial in the recycling process. Salt slags are the byproducts of the secondary aluminium industry, which should be recycled and processed in a proper way by taking the environmental impact into consideration. This article provides qualitative assessment on 10 different commercial aluminium scraps for their relative recyclability via well-designed and controlled laboratory experiments. It confirms that more nonmetallic contaminants, smaller size, and higher ratio of surface area to body volume generally lead to a lower metal recovery. Recycling the scraps with lower recyclability normally generates more salt slags. High slag viscosity leads to more fine aluminum metal entrapped in the salt slag and thus increases the load of salt slag recycling. It was found that viscosity of the salt flux is increased with the amount of entrapped nonmetallic components, which affect the settling of heavier materials. In addition, the slag s les from the melting tests were leached and analyzed to evaluate the behavior of carbon containing scrap. The elevated carbon content in the scrap resulted in more carbide formation in salt slags and thus more methane generation in salt slag recycling with a higher environmental impact.
Producing metals from common rocks: The case of gold
Publisher: Elsevier BV
Date: 09-2019
The influence of design variables on the flotation of pyrite in an air-sparged hydrocyclone
Publisher: Elsevier BV
Date: 1990
TMS 2010 materials and society symposium: Making a “Sustainable” world
Publisher: Springer Science and Business Media LLC
Date: 11-2009
Magnesium removal in the electrolytic zinc industry
Publisher: Elsevier BV
Date: 05-2000
Simulation-Based Exergetic Analysis of NdFeB Permanent Magnet Production to Understand Large Systems
Publisher: Springer Science and Business Media LLC
Date: 11-05-2020
Raw material 'criticality' - Sense or nonsense?
Publisher: IOP Publishing
Date: 20-02-2017
Computational Fluid Dynamic Modeling of Zinc Slag Fuming Process in Top-Submerged Lance Smelting Furnace
Publisher: Springer Science and Business Media LLC
Date: 17-08-2011
Correction to: The Importance of Viscous and Interfacial Forces in the Hydrodynamics of the Top-Submerged-Lance Furnace
Publisher: Springer Science and Business Media LLC
Date: 10-10-2019
Recovery of REEs, Zr(+Hf), Mn and Nb by H2SO4 leaching of eudialyte concentrate
Publisher: Elsevier BV
Date: 06-2019
Determining the Bubble Dynamics of a Top Submerged Lance Smelter
Publisher: Springer International Publishing
Date: 2022
Hydrothermal metallurgy: An overview of basic concepts and applications
Publisher: Elsevier BV
Date: 08-2000
Flow of molten slag and iron at 1500 °C to 1600 °C through packed coke beds
Publisher: Springer Science and Business Media LLC
Date: 12-2005
Top submerged lance direct zinc smelting
Publisher: Elsevier BV
Date: 08-2009
Limits of Design for Recycling and “Sustainability”: A Review
Publisher: Springer Science and Business Media LLC
Date: 21-01-2011
Structural analysis of germanium (Ge)-containing ferrous calcium silicate magnesia slag for applications of black copper smelting
Publisher: Springer International Publishing
Date: 2018
Shredding, sorting and recovery of metals from WEEE: linking design to resource efficiency
Publisher: Elsevier
Date: 2012
Copper recovery from copper(II) sulfate solutions by reduction with carbohydrates
Publisher: Elsevier BV
Date: 05-2002
Life Cycle Assessment of Metallurgical Processes Based on Physical Flowsheet Models
Publisher: Springer International Publishing
Date: 2016
Galvanic interactions during the dissolution of gold in cyanide and thiourea solutions
Publisher: Elsevier BV
Date: 1990
A Review of Top Submerged Lance (TSL) Processing—Part II: Thermodynamics, Slag Chemistry and Plant Flowsheets
Publisher: MDPI AG
Date: 13-10-2023
DOI: 10.3390/MET13101742
Immobilization of arsenic in crystalline form from aqueous solution by hydrothermal processing above 483.15K
Publisher: Elsevier BV
Date: 04-2001
Simulation-Based Exergy Analysis of Large Circular Economy Systems: Zinc Production Coupled to CdTe Photovoltaic Module Life Cycle
Publisher: Springer Science and Business Media LLC
Date: 17-12-2019
Product-Centric Simulation-Based Design for Recycling: Case of LED Lamp Recycling
Publisher: Springer Science and Business Media LLC
Date: 04-02-2015
Development and Design of the First Industrial Magnetohydrodynamic Slag-Cleaning Reactor From Execution and Analysis of Pilot Plant Tests Through Coupled CFD Simulations
Publisher: Springer Science and Business Media LLC
Date: 24-03-2023
Material-Centric (Aluminum and Copper) and Product-Centric (Cars, WEEE, TV, Lamps, Batteries, Catalysts) Recycling and DfR Rules
Publisher: Elsevier
Date: 2014
Modelling of the mass transfer in gas-sparged electrolysers with neural nets
Publisher: Elsevier BV
Date: 1993
Distribution of elements between copper and FeOx–CaO–SiO2slags during pyrometallurgical processing of WEEE
Publisher: Informa UK Limited
Date: 09-2013
Property-based modelling and simulation of mechanical separation processes using dynamic binning and neural networks
Publisher: Elsevier BV
Date: 09-2018
Analysis of transport phenomena in a rotary-kiln hazardous waste incinerator
Publisher: Inderscience Publishers
Date: 2007
Letter to the editor
Publisher: Elsevier BV
Date: 2013
Conversion of magnesium fluoride to magnesium hydroxide
Publisher: Elsevier BV
Date: 03-2003
Modelling of aluminium scrap melting in a rotary furnace
Publisher: Elsevier BV
Date: 03-2006
A dynamic-CFD hybrid model of a submerged arc furnace for phosphorus production
Publisher: Elsevier BV
Date: 03-2006
The ferric leaching kinetics of arsenopyrite
Publisher: Elsevier BV
Date: 04-1999
Dynamic modelling of E-waste recycling system performance based on product design
Publisher: Elsevier BV
Date: 02-2010
The application of knowledge-based systems to the simulation of gold extraction processes
Publisher: Elsevier BV
Date: 1991
A Review of Top-Submerged Lance (TSL) Processing—Part I: Plant and Reactor Engineering
Publisher: MDPI AG
Date: 12-10-2023
DOI: 10.3390/MET13101728
Challenges of the Circular Economy: A Material, Metallurgical, and Product Design Perspective
Publisher: Annual Reviews
Date: 07-2019
DOI: 10.1146/ANNUREV-MATSCI-070218-010057
Abstract: Circular economy's (CE) noble aims maximize resource efficiency (RE) by, for ex le, extending product life cycles and using wastes as resources. Modern society's vast and increasing amounts of waste and consumer goods, their complexity, and functional material combinations are challenging the viability of the CE despite various alternative business models promising otherwise. The metallurgical processing of CE-enabling technologies requires a sophisticated and agile metallurgical infrastructure. The challenges of reaching a CE are highlighted in terms of, e.g., thermodynamics, transfer processes, technology platforms, digitalization of the processes of the CE stakeholders, and design for recycling (DfR) based on a product (mineral)-centric approach, highlighting the limitations of material-centric considerations. Integrating product-centric considerations into the water, energy, transport, heavy industry, and other smart grid systems will maximize the RE of future smart sustainable cities, providing the fundamental detail for realizing and innovating the United Nation's Sustainability Development Goals.
A Critical Review of Lithium-Ion Battery Recycling Processes from a Circular Economy Perspective
Publisher: MDPI AG
Date: 05-11-2019
Abstract: Lithium-ion batteries (LIBs) are currently one of the most important electrochemical energy storage devices, powering electronic mobile devices and electric vehicles alike. However, there is a remarkable difference between their rate of production and rate of recycling. At the end of their lifecycle, only a limited number of LIBs undergo any recycling treatment, with the majority go to landfills or being hoarded in households. Further losses of LIB components occur because the the state-of-the-art LIB recycling processes are limited to components with high economic value, e.g., Co, Cu, Fe, and Al. With the increasing popularity of concepts such as “circular economy” (CE), new LIB recycling systems have been proposed that target a wider spectrum of compounds, thus reducing the environmental impact associated with LIB production. This review work presents a discussion of the current practices and some of the most promising emerging technologies for recycling LIBs. While other authoritative reviews have focused on the description of recycling processes, the aim of the present was is to offer an analysis of recycling technologies from a CE perspective. Consequently, the discussion is based on the ability of each technology to recover every component in LIBs. The gathered data depicted a direct relationship between process complexity and the variety and usability of the recovered fractions. Indeed, only processes employing a combination of mechanical processing, and hydro- and pyrometallurgical steps seemed able to obtain materials suitable for LIB (re)manufacture. On the other hand, processes relying on pyrometallurgical steps are robust, but only capable of recovering metallic components.
CFD Investigation of Rotational Sloshing Waves in a Top-Submerged-Lance Metal Bath
Publisher: Springer Science and Business Media LLC
Date: 17-05-2021
DOI: 10.1007/S11663-021-02182-X
Abstract: Computational fluid dynamics (CFD) is applied to investigate rotational sloshing waves in a top-submerged-lance (TSL) cylindrical metal bath. The study is an extension of a recent work of the authors, where the top injection of Ar into a metallic bath was examined in a quasi-2D flat setup, allowing the numerical model to be extensively validated against experimental data based on x-ray radiography. The new analysis of top gas injection in a cylindrical vessel reveals the appearance of rotational sloshing in the bath, which is maintained by a condition of synchronism between the gas bubbles and the free surface of the bath. A numerical quantification is achieved with specific post-processing of the simulation results, showing the effect of control parameters such as the lance immersion depth and the gas flow rate. This fundamental research study demonstrates the capability of CFD modeling to predict bath dynamics known from literature and practice, the understanding of which is essential for the design of TSL furnaces.
Digitalizing the Circular Economy (CE): From Reactor Simulation to System Models of the CE
Publisher: Springer International Publishing
Date: 2022
Dynamics of Rising Bubbles in a Quiescent Slag Bath with Varying Thermo-Physical Properties
Publisher: Springer Science and Business Media LLC
Date: 21-09-2020
DOI: 10.1007/S11663-020-01947-0
Abstract: The motion of bubbles in a liquid slag bath with temperature gradients is investigated by means of 3D fluid dynamic computations. The goal of the work is to describe the dynamics of the rising bubbles, taking into account the temperature dependency of the thermo-physical properties of the slag. Attention is paid to the modeling approach used for the slag properties and how this affects the simulation of the bubble motion. In particular, the usage of constant values is compared to the usage of temperature-dependent data, taken from models available in the literature and from in-house experimental measurements. Although the present study focuses on temperature gradients, the consideration of varying thermo-physical properties is greatly relevant for the fluid dynamic modeling of reactive slag baths, since the same effect is given by heterogeneous species and solid fraction distributions. CFD is applied to evaluate the bubble dynamics in terms of the rising path, terminal bubble shape, and velocity, the gas–liquid interface area, and the appearance of break-up phenomena. It is shown that the presence of a thermal gradient strongly acts on the gas–liquid interaction when the temperature-dependent properties are considered. Furthermore, the use of literature models and experimental data produces different results, demonstrating the importance of correctly modeling the slag’s thermo-physical properties.
Separation of Aluminum and Iron from Lanthanum—A Comparative Study of Solvent Extraction and Hydrolysis-Precipitation
Publisher: MDPI AG
Date: 20-06-2020
DOI: 10.3390/MIN10060556
Abstract: This study investigates the removal of aluminum and iron from rare earth element (REE) containing solutions by solvent extraction with saponified naphthenic acid and by hydrolysis-precipitation. The results emphasize both, the preferential application as well as limitations of every method. We find that emulsification occurring during the solvent extraction of aluminum is caused by its slow extraction rate in comparison to the neutralization reaction and by the proximity of the pH value required for aluminum extraction and the pH value at which hydrolysis of aluminum occurs. However, by choosing a long shaking time of at least 4 h, the emulsion recedes. The formation of emulsion can be avoided by strict control of pH value during the extraction. Moreover, the loading capacity of the organic phase with aluminum is limited due to the strong increase in viscosity of the organic phase with increasing aluminum concentration and due to the gel formation. Regarding the extraction of iron, the amount of extracted ions is limited due to the overlap of the pH range required for the extraction with pH range in which sparingly soluble iron oxides/hydroxides are formed. In summary, aluminum and iron can be simultaneously removed from REE-sulfate solution by solvent extraction with saponified naphthenic acid in one extraction stage only from diluted solutions. However, in comparison to the hydrolysis-precipitation method, a higher purity of the solution is achieved. A complete removal of aluminum and iron from concentrated solutions can be achieved in two stages. First, the content of aluminum and iron should be reduced by hydrolysis-precipitation. After that, a high-purity solution can be obtained by subsequent solvent extraction by saponified naphthenic acid.
A multi-dimensional indicator for material and energy circularity: Proof-of-concept of exentropy in Li-ion battery recycling
Publisher: Elsevier BV
Date: 11-2023
Material and Metal Ecology
Publisher: Elsevier
Date: 2008
Challenges in predicting the role of water chemistry in flotation through simulation with an emphasis on the influence of electrolytes
Publisher: Elsevier BV
Date: 08-2018
The simulation and identification of flotation processes by use of a knowledge based model
Publisher: Elsevier BV
Date: 06-1992
An integrated thermochemical-systems approach to the prediction of matte composition dynamics in an Ausmelt® nickel-copper matte converter
Publisher: Elsevier BV
Date: 11-2002
X-ray Radioscopic Visualization of Bubbly Flows Injected Through a Top Submerged Lance into a Liquid Metal
Publisher: Springer Science and Business Media LLC
Date: 29-10-2019
Synthesis of processes for the production of environmentally clean zinc
Publisher: Elsevier BV
Date: 1995
CFD Study on the Physical Behavior of Flue Dust in an Industrial-Scale Copper Waste Heat Boiler
Publisher: Springer Science and Business Media LLC
Date: 10-12-2021
Recycling of distributed aluminium turning scrap
Publisher: Elsevier BV
Date: 11-2002
Digitalizing the Circular Economy
Publisher: Springer Science and Business Media LLC
Date: 13-09-2016
The application of neural nets in the metallurgical industry
Publisher: Elsevier BV
Date: 05-1994
The influence of particle size reduction and liberation on the recycling rate of end-of-life vehicles
Publisher: Elsevier BV
Date: 02-2004
On the Use of Statistical Entropy Analysis as Assessment Parameter for the Comparison of Lithium-Ion Battery Recycling Processes
Publisher: MDPI AG
Date: 23-04-2019
Abstract: The principle of the circular economy is to reintroduce end-of-life materials back into the economic cycle. While reintroduction processes, for ex le, recycling or refurbishing, undoubtedly support this objective, they inevitably present material losses or generation of undesired by-products. Balancing losses and recoveries into a single and logical assessment has now become a major concern. The present work broadens the use of relative statistical entropy and material flow analysis to assess the recycling processes of two lithium-ion batteries previously published in the literature. Process simulation software, that is, HSC Sim®, was employed to evaluate with a high level of accuracy the performance of such recycling processes. Hereby, this methodology introduces an entropic association between the quality of final recoveries and the pre-processing stages, that is, shredding, grinding, and separation, by a parameter based on information theory. The results demonstrate that the pre-processing stages have a significant impact on the entropy value obtained at the final stages, reflecting the losses of materials into waste and side streams. In this manner, it is demonstrated how a pre-processing system capable of separating a wider number of components is advantageous, even when the final quality of refined products in two different processes is comparable. Additionally, it is possible to observe where the process becomes redundant, that is, where processing of material does not result in a significant concentration in order to take corrective actions on the process. The present work demonstrates how material flow analysis combined with statistical entropy can be used as a parameter upon which the performance of multiple recycling processes can be objectively compared from a material-centric perspective.
Oxygen transfer in agitated silica and pyrite slurries
Publisher: Elsevier BV
Date: 2000
Quantifying the relative availability of high-tech by-product metals – The cases of gallium, germanium and indium
Publisher: Elsevier BV
Date: 06-2017
The development of a CFD model of a submerged arc furnace for phosphorus production
Publisher: Elsevier BV
Date: 08-2006
SULFIDATION OF Al2O3WITH CS2GAS FOR COMPACT ALUMINIUM PRODUCTION PROCESS
Publisher: Informa UK Limited
Date: 2004
Thermodynamics Behavior of Germanium During Equilibrium Reactions between FeOx -CaO-SiO2 -MgO Slag and Molten Copper
Publisher: Springer Science and Business Media LLC
Date: 27-07-2016
Study of process water recirculation in a flotation plant by means of process simulation
Publisher: Elsevier BV
Date: 03-2020
Eco-efficiency indicator framework implemented in the metallurgical industry: part 1—a comprehensive view and benchmark
Publisher: Springer Science and Business Media LLC
Date: 06-05-2016
Use of simulated annealing and neural nets for the eco-techno-economic synthesis of mineral and metallurgical flowsheets
Publisher: Elsevier BV
Date: 03-1996
Optimal design of mineral separation circuits by use of linear programming
Publisher: Elsevier BV
Date: 1988
Distribution of elements between copper and FeOx–CaO–SiO2slags during pyroprocessing of WEEE: Part 2 – indium
Publisher: Informa UK Limited
Date: 06-12-2013
Reduction of copper with cellulose in an autoclave; an alternative to electrolysis?
Publisher: Elsevier BV
Date: 04-1999
Dynamic modelling and optimisation of the resource cycle of passenger vehicles
Publisher: Elsevier BV
Date: 11-2002
CFD Modeling and Experimental Validation of Top-Submerged-Lance Gas Injection in Liquid Metal
Publisher: Springer Science and Business Media LLC
Date: 08-06-2020
DOI: 10.1007/S11663-020-01864-2
Abstract: In the present work, the dynamics of a downward gas injection into a liquid metal bath is studied using a numerical modeling approach, and validated with experimental data. As in a top-submerged-lance (TSL) smelter, gas is injected through the lance into the melt. By this means, the properties of the liquid are closer to the actual industrial process than the typically used water/glycerol–air/helium systems. The experimental activity was carried out in a quasi-2D vessel $$(144\\times 144\\times 12\\,{\\hbox {mm}}^{3})$$ ( 144 × 144 × 12 mm 3 ) filled with GaInSn, a metal alloy with eutectic at room temperature. Ar was used as the inert gas. The structure and behavior of the gas phase were visualized and quantitatively analyzed by X-ray radiography and high-speed imaging. Computational Fluid Dynamics (CFD) was applied to simulate the multiphase flow in the vessel and the Volume Of Fluid (VOF) model chosen to track the interface using a geometric reconstruction of the interface. Three different vertical lance positions were investigated, applying a gas flow rate of $$Q_{\\text {gas}}=6850\\,{\\hbox {cm}}^{3}/{\\hbox {min}}.$$ Q gas = 6850 cm 3 / min . The CFD model is able to predict the bubble detachment frequency, the average void fraction distributions, and the bubble size and hydrodynamic behavior, demonstrating its applicability to simulate such complex multiphase systems. The use of numerical models also provides a deep insight into fluid dynamics to study particular phenomena such as bubble break-up and free surface oscillations.
Thermodynamic modelling of magnesium fluoride precipitation in concentrated zinc sulphate environment
Publisher: Elsevier BV
Date: 04-2001
The Importance of Viscous and Interfacial Forces in the Hydrodynamics of the Top-Submerged-Lance Furnace
Publisher: Springer Science and Business Media LLC
Date: 03-07-2019
DOI: 10.1007/S11663-019-01630-Z
Abstract: The purpose of this work is to focus on the hydrodynamics of a Top-Submerged-Lance (TSL) smelting furnace, understanding how liquid properties and operational parameters act on key factors of a TSL process, such as splashing, mixing, mass transfer area, and bubble development. A deep knowledge of all those aspects is needed since they all influence the smelting reaction rates hence the efficiency of the reactor. The characterization and scaling of the TSL gas injection are commonly based on the modified Froude number, the ratio of dynamic and gravitational forces. Detailed literature research reveals a potential weakness of this approach, since it does not consider the effects of viscosity and surface tension. To investigate this question an extensive parametric study was performed applying computational fluid dynamics to cold and non-reactive flows, which provided a broad overview of the physics of the flow. The analysis was performed on fluid dynamic properties (liquid density, liquid viscosity, surface tension) and operational variables (gas volume flow, lance immersion depth). The coupled Level Set—Volume of Fluid model, available in the commercial solver ANSYS Fluent ® , was used to resolve the gas–liquid interface in the multiphase flow. The results of the work underscore the significance of the viscous and interfacial forces for gas injection in smelting slags, confirming the incompleteness of applying only the Froude number to describe such flows.
Simulation-Based Exergy and LCA Analysis of Aluminum Recycling: Linking Predictive Physical Separation and Re-melting Process Models with Specific Alloy Production
Publisher: Springer Science and Business Media LLC
Date: 25-02-2020
Transient CFD Calculation of Accretion Formation in a Copper Waste Heat Boiler
Publisher: Springer Science and Business Media LLC
Date: 21-09-2022
The time-varying factors influencing the recycling rate of products
Publisher: Elsevier BV
Date: 03-2004
Supporting technologies for the processing of metals and alloys
Publisher: Elsevier
Date: 2004
Dealing with complexity in material cycle simulation and design
Publisher: Elsevier BV
Date: 06-1999
The resources, exergetic and environmental footprint of the silicon photovoltaic circular economy: Assessment and opportunities
Publisher: Elsevier BV
Date: 06-2021
Selective Leaching of Rare Earth Elements (REEs) from Eudialyte Concentrate after Sulfation and Thermal Decomposition of Non-REE Sulfates
Publisher: MDPI AG
Date: 29-08-2019
DOI: 10.3390/MIN9090522
Abstract: Eudialyte, a sodium rich zirconosilicate, is one of the promising sources for REEs (rare earth elements), particularly for HREEs + Y (heavy rare earth elements and yttrium). The key challenge in hydrometallurgical processing is the prevention of silica gel formation and REE separation from resulting multi-element leach solutions. This study deals with the selective extraction of REE from eudialyte concentrate by selective roasting. In this method, metal ions are converted into sulfates, followed by the decomposition of non-REE sulfates in a roasting step and the water leaching of the calcine. The effect of acid addition, roasting temperature, roasting time, pulp density and leaching time is studied. For sufficient conversion of REEs into sulfates, sulfuric acid is added in excess. At a roasting temperature of ≥750 °C sulfates of zirconium, hafnium, niobium, aluminum and iron decompose into sparingly soluble compounds, while REE and manganese sulfates remain stable up to a roasting time of 120 min. The silica present in the calcine is found to be metastable even after roasting. The amount of leached Si4+ is dependent predominantly on the pH value of the leaching medium. Applying the method, REEs can be efficiently separated from zirconium, hafnium, niobium, aluminum and iron. However, only diluted solutions can be produced. Water leaching of calcine at high solid/liquid ratios causes REE losses resulting from formation of double sulfates and gypsum. The acid excess removed from the reaction mixture in the roasting stage can be simply recovered by treatment of the gas phase.
Flotation of mixed copper oxide and sulphide minerals with xanthate and hydroxamate collectors
Publisher: Elsevier BV
Date: 03-2009
Opposing scaling and fouling during electrodialysis of sodium fluoride solution in a membrane cell reactor
Publisher: Elsevier BV
Date: 06-2004
A recycling process for thermoelectric devices developed with the support of statistical entropy analysis
Publisher: Elsevier BV
Date: 08-2020
Thermodynamics data of valuable elements relevant to e-waste processing through primary and secondary copper production: A review
Publisher: Elsevier BV
Date: 03-2027
Direct reduction during the production of ferroniobium in an electric furnace
Publisher: Elsevier BV
Date: 02-1994
The State-of-the-Art in the Top Submerged Lance Gas Injection Technology: A Review
Publisher: Springer Science and Business Media LLC
Date: 15-09-2022
Opportunities and limits of recycling: A dynamic-model-based analysis
Publisher: Springer Science and Business Media LLC
Date: 04-2012
DOI: 10.1557/MRS.2012.57
Gold – A Key Enabler of a Circular Economy
Publisher: Elsevier
Date: 2016
The Optimal Shifting Strategy for Profile Control
Publisher: Elsevier BV
Date: 10-2003
The simulation-based analysis of the resource efficiency of the circular economy – the enabling role of metallurgical infrastructure
Publisher: Informa UK Limited
Date: 08-11-2019
Analysis for optimum conditions for recovery of valuable metals from E-waste through black copper smelting
Publisher: Springer International Publishing
Date: 2017
Exergy as a tool for evaluation of the resource efficiency of recycling systems
Publisher: Elsevier BV
Date: 08-2007
The use of linear programming in the optimal design of flotation circuits incorporating regrind mills
Publisher: Elsevier BV
Date: 05-0002
Characterization of hydroxyl-bearing magnesium fluoride containing physically bound water
Publisher: Cambridge University Press (CUP)
Date: 06-2002
DOI: 10.1154/1.1458940
Abstract: Most electrolytic zinc plants have to deal with dissolved magnesium in their process liquors, as zinc sulphide concentrates contain small amounts of magnesium. Applied magnesium bleed methods are generally expensive and environmentally unfriendly. Recently, a new approach was suggested and discussed, which involves selective magnesium fluoride precipitation from purified zinc sulphate solutions. X-ray fluorescence measurements of these precipitates indicated that the ratio Mg:F is not 1:2 as would be expected if the precipitate was MgF 2 , which should be formed on a theoretical basis. It was inferred that fluoride was partly substituted by hydroxyl groups. Analytical techniques such as infrared absorption spectrometry, X-ray diffraction, and thermogravimetry were combined in order to verify this hypothesis. The precipitate indeed appeared to be a magnesium fluoro- hydroxide compound containing physically bound water. The results contribute to the understanding of the required operating conditions of the proposed process.
Avoided energy cost of producing minerals: The case of iron ore
Publisher: Elsevier BV
Date: 11-2019
CFD Investigations of Bath Dynamics in a Pilot-Scale TSL Furnace
Publisher: Springer Science and Business Media LLC
Date: 19-07-2021
DOI: 10.1007/S11663-021-02233-3
Abstract: The hydrodynamics of a Top Submerged Lance (TSL) slag bath are investigated here by means of Computational Fluid Dynamics (CFD) simulation. The object of the study is the pilot-scale furnace located at TU Bergakademie Freiberg, where air is injected beneath the slag bath with a top lance. The fluid dynamics system is evaluated at operating conditions, with experimentally measured slag physical properties and real flow rates. The numerical approach is based on the Volume Of Fluid (VOF) model, a front-tracking method that allows the interface to be geometrically reconstructed. Using a fine computational grid, the multiphase interactions are calculated with a high level of detail, revealing the mechanisms of bubble formation and bath dynamics. Two lance configurations are compared, with and without a swirler, and the effect on the hydrodynamics is discussed with regards to key features of the process, such as bubble dynamics, slag splashing, the interface area, rotational sloshing, and bath mixing. The model predicts bubble frequencies in the range of 2.5 to 3 Hz and captures rotational sloshing waves with half the frequencies of the bubble detachment. These results agree with real furnace data from the literature, proving the reliability of the computing model and adding value to the empirical understanding of the process, thanks to the direct observation of the resolved multiphase flow features. The comparative study indicates that the air swirler has an overall positive effect in addition to the proposed enhancement of lance cooling, with an increase in the bath mixing and a reduction in the splashing.
Quantifying the quality loss and resource efficiency of recycling by means of exergy analysis
Publisher: Elsevier BV
Date: 2007
Criticality and Recyclability Assessment of Car Parts—A Thermodynamic Simulation-Based Approach
Publisher: MDPI AG
Date: 21-12-2022
DOI: 10.3390/SU15010091
Water-saving strategies in the mining industry – The potential of mineral processing simulators as a tool for their implementation
Publisher: Elsevier BV
Date: 03-2019
DOI: 10.1016/J.JENVMAN.2018.11.139
Abstract: As the mining industry is facing an increasing number of issues related to its fresh water consumption, water-saving strategies are progressively being implemented in the mineral processing plants, often leading to variations in the process water chemistry. However, the impact of water chemistry variations on the process performance is rarely known beforehand, thus creating an obstacle to the implementation of those water-saving strategies. To tackle this problem, the effect the different dissolved species present in the process water have on the processing plant performance must be quantified, and this information must be digitalized in a practical and suitable form to be used in mineral processing simulators. To achieve this goal, a methodology to digitalize the influence of the process water composition on the flotation performance is presented in this paper. Using the flotation of a fluorite ore as case study, the relationship between process water composition and the flotation kinetics of that fluorite ore was determined. This relationship was digitalized in HSC Sim, a mineral processing simulator, turning it into a tool capable of simulating the flotation performance under a variety of process water compositions. Finally, the potential of this new tool to help implementing water-saving strategies on the mine site is discussed, and the challenges that need to be overcome in order to apply this tool at industrial scale are being addressed.
Effect of dissolved metal sulphates on gas-liquid oxygen transfer in agitated quartz and pyrite slurries
Publisher: Elsevier BV
Date: 12-2000
E-waste collection channels and household recycling behaviors in Taizhou of China
Publisher: Elsevier BV
Date: 10-2014
The flotation behaviour of chromite with respect to the beneficiation of UG2 ore
Publisher: Elsevier BV
Date: 10-1999
Corrigendum to “Decarbonizing copper production by power-to-hydrogen: A techno-economic analysis” [J. Clean. Prod. 306 (2021) 127191]
Publisher: Elsevier BV
Date: 11-2021
Electrowinning Al from Al[sub 2]S[sub 3] in Molten Salt
Publisher: The Electrochemical Society
Date: 2007
DOI: 10.1149/1.2728263
Evaluation of the recycling of coated magnesium using exergy analysis
Publisher: Elsevier BV
Date: 08-2007
Oxidation state and activities of chromium oxides in CaO-SiO2-CrOx slag system
Publisher: Springer Science and Business Media LLC
Date: 08-2002
Catalytic gasification of activated carbon by CO2
Publisher: Elsevier BV
Date: 1989
Steady-state simulation and optimization of gravity separation circuits by use of linear programming and expert systems
Publisher: Elsevier BV
Date: 1991
The Amsterdam pilot on bottom ash
Publisher: Elsevier BV
Date: 02-2004
Modeling the Combustion Behavior of Hazardous Waste in a Rotary Kiln Incinerator
Publisher: Informa UK Limited
Date: 06-2005
DOI: 10.1080/10934520500182800
Abstract: Hazardous wastes have complex physical forms and chemical compositions and are normally incinerated in rotary kilns for safe disposal and energy recovery. In the rotary kiln, the multifeed stream and wide variation of thermal, physical, and chemical properties of the wastes cause the incineration system to be highly heterogeneous, with severe temperature fluctuations and unsteady combustion chemistry. Incomplete combustion is often the consequence, and the process is difficult to control. In this article, modeling of the waste combustion is described by using computational fluid dynamics (CFD). Through CFD simulation, gas flow and mixing, turbulent combustion, and heat transfer inside the incinerator were predicted and visualized. As the first step, the waste in various forms was modeled to a hydrocarbon-based virtual fuel mixture. The combustion of the simplified waste was then simulated with a seven-gas combustion model within a CFD framework. Comparison was made with previous global three-gas combustion model with which no chemical behavior can be derived. The distribution of temperature and chemical species has been investigated. The waste combustion model was validated with temperature measurements. Various operating conditions and the influence on the incineration performance were then simulated. Through this research, a better process understanding and potential optimization of the design were attained.
Statistical entropy analysis as tool for circular economy: Proof of concept by optimizing a lithium-ion battery waste sieving system
Publisher: Elsevier BV
Date: 03-2019
A simulation model of the comminution–liberation of recycling streams
Publisher: Elsevier BV
Date: 02-2005
Knowledge-based simulation and identification of various metallurgical reactors
Publisher: Springer Science and Business Media LLC
Date: 08-1991
DOI: 10.1007/BF02654293
A Dynamic Thermochemistry-Based Process Model for Lead Smelting in the TSL Process
Publisher: Springer Science and Business Media LLC
Date: 15-06-2021
The Equilib-ARMAX approach to the dynamic modelling of the melt metallurgy in DC plasma arc smelting operations
Publisher: Elsevier BV
Date: 08-2006
Pt‐Doped TiO 2 Nanoparticles for Photocatalytic Degradation of Phenols in Wastewater
Publisher: Wiley
Date: 19-02-2013
The quantification of entropy for multicomponent systems: Application to microwave-assisted comminution
Publisher: Elsevier BV
Date: 08-2021
The use of fuzzy rule models to link automotive design to recycling rate calculation
Publisher: Elsevier BV
Date: 08-2007
An Integrated Multi-Sensor System for the In-Line Monitoring of Material Streams
Publisher: IEEE
Date: 10-2019
Special Edition on MMME06
Publisher: Elsevier BV
Date: 08-2007
Eco-efficiency indicator framework implemented in the metallurgical industry: part 2—a case study from the copper industry
Publisher: Springer Science and Business Media LLC
Date: 08-05-2016
A new paradigm for waste management
Publisher: Elsevier BV
Date: 12-2000
Dynamic performance metrics to assess sustainability and cost effectiveness of integrated urban water systems
Publisher: Elsevier BV
Date: 08-2010
Process principles in minerals and materials production – with a focus on metal production and recycling (4th ed.)
Publisher: Informa UK Limited
Date: 02-10-2021
Simulation-based design for resource efficiency of metal production and recycling systems: Cases - copper production and recycling, e-waste (LED lamps) and nickel pig iron
Publisher: Springer Science and Business Media LLC
Date: 21-02-2015
CFD Modeling of Swirl and Nonswirl Gas Injections into Liquid Baths Using Top Submerged Lances
Publisher: Springer Science and Business Media LLC
Date: 17-11-2009
Hydrothermal precipitation of arsenic compounds in the ferric–arsenic (III)–sulfate system: thermodynamic modeling
Publisher: Elsevier BV
Date: 05-2003
Resource Efficiency Evaluation of Pyrometallurgical Solutions to Minimize Iron-Rich Residues in the Roast-Leach-Electrowinning Process
Publisher: Springer International Publishing
Date: 2020
Decarbonizing copper production by power-to-hydrogen: A techno-economic analysis
Publisher: Elsevier BV
Date: 07-2021
A particle packing algorithm for pellet design with a predetermined size distribution
Publisher: Elsevier BV
Date: 04-2007
Material and Metal Ecology
Publisher: Elsevier
Date: 2008
Modeling of metal-slag equilibrium processes using neural nets
Publisher: Springer Science and Business Media LLC
Date: 10-1992
DOI: 10.1007/BF02649724
Metallurgical infrastructure and technology criticality: the link between photovoltaics, sustainability, and the metals industry
Publisher: Springer Science and Business Media LLC
Date: 29-03-2022
A thermodynamic approach to the compatibility of materials combinations for recycling
Publisher: Elsevier BV
Date: 12-2004
Thermodynamic metrics for measuring the “sustainability” of design for recycling
Publisher: Springer Science and Business Media LLC
Date: 08-2008
Thermodynamics of Palladium (Pd) and Tantalum (Ta) Relevant to Secondary Copper Smelting
Publisher: Springer Science and Business Media LLC
Date: 21-10-2017
Kinetic model for the carbothermic reduction of manganese dioxide
Publisher: Elsevier BV
Date: 03-1988
Management of the Web of Water and Web of Materials
Publisher: Elsevier BV
Date: 02-2010
Dynamic structures in variance based data reconciliation adjustments for a chromite smelting furnace
Publisher: Elsevier BV
Date: 11-2002
BlueMetals Technology—Experience from Commissioning E-Scrap Recycling Plants
Publisher: Springer International Publishing
Date: 2022
A semi-empirical model for the electro-osmotic dewatering of slurries between fixed electrodes
Publisher: Elsevier BV
Date: 07-1992
Simulation-based exergy, thermo-economic and environmental footprint analysis of primary copper production
Publisher: Elsevier BV
Date: 2019
On-line prediction of transient phenomena in the slag phase during ilmenite smelting
Publisher: Elsevier
Date: 2000
The energy needed to concentrate minerals from common rocks: The case of copper ore
Publisher: Elsevier BV
Date: 08-2019
Characterizing material liberation of multi-material lightweight structures from shredding experiments and finite element simulations
Publisher: Elsevier BV
Date: 10-2021
Recycling system flexibility: the fundamental solution to achieve high energy and material recovery quotas
Publisher: Elsevier BV
Date: 03-2008
Related Organisations
Rheinisch Westfalische Technische Hochschule Aachen
Location: Germany
Related Funding Activities
Discovery Projects - Grant ID: DP0772543
Start Date: 2008
End Date: 12-2009
Amount: $282,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0990404
Start Date: 04-2010
End Date: 03-2014
Amount: $240,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0776721
Start Date: 03-2007
End Date: 04-2011
Amount: $76,881.00
Funder: Australian Research Council
View Funded Activity