Journal of Sustainable Metallurgy
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High-Temperature Vacuum Treatment of Aluminum Electrolytic Spent Carbon Cathode
Journal of Sustainable Metallurgy - Tập 8 - Trang 1204-1214 - 2022
The spent carbon cathode (SCC) produced in the aluminum electrolysis process has been listed as hazardous waste due to excessive soluble fluoride and cyanide. In a high-temperature vacuum environment, the soluble fluoride and cyanide in SCC can be evaporated and decomposed, respectively. As a result, its impact on the environment can be eliminated. The remains and volatiles can be collected for re......
Nickel Metal Hydride Battery Waste: Mechano-hydrometallurgical Experimental Study on Recycling Aspects
Journal of Sustainable Metallurgy - Tập 6 - Trang 78-90 - 2020
In this research, the recycling of industrially collected and crushed nickel metal hydride battery waste, rich in valuable metals such as Ni and rare earth elements (REE), was investigated. The crushed waste was characterized based on elemental distribution per particle size class and density. Although issues with sieving, such as agglomeration of shredded separator fibers, were observed, a good s......
Progress in Waste Lead Paste Recycling Technology from Spent Lead–Acid Battery in China
Journal of Sustainable Metallurgy - Tập 8 - Trang 978-993 - 2022
The incorporation of lead into most consumer items such as gasoline, paints, and welding materials is generally prohibited. However, lead–acid batteries (LABs) have become popular and have emerged as a major area where lead is utilized. Appropriate recycling technologies and the safe disposal of LABs (which contain approximately 65% lead) and lead-containing waste are, therefore, vital for the sus......
Ionic Liquids and Deep-Eutectic Solvents in Extractive Metallurgy: Mismatch Between Academic Research and Industrial Applicability
Journal of Sustainable Metallurgy - Tập 9 - Trang 423-438 - 2023
The past 10–20 years have seen numerous academic papers describing the benefits of ionic liquids (ILs) and deep-eutectic solvents (DESs) for leaching, solvent extraction and electrowinning. The scientific community—including the authors of this opinion article—have frequently proclaimed these neoteric solvents as game-changers in extractive metallurgy. Despite this, there have been no commercial b......
Recovery of Rare-Earth Elements from Neodymium Magnet Waste Using Glycolic, Maleic, and Ascorbic Acids Followed by Solvent Extraction
Journal of Sustainable Metallurgy - Tập 5 - Trang 85-96 - 2018
Rare-earth elements (REEs) play a key role in modern societies as their usage keeps increasing in new technologies and green energy sources. However, they are also considered the most critical raw materials in the EU and the USA in terms of supply. There is an increased global interest in the recycling of REEs from end-of-life products and industrial waste. Some REEs, such as Nd, Pr, and Dy, can b......
CFD Study on Bottom-Blown Copper Smelting Furnace with Unsymmetric Gas Injection
Journal of Sustainable Metallurgy - Tập 8 - Trang 1235-1244 - 2022
When focusing on the largest copper oxygen-enriched bottom blowing furnace in China, the problems of uneven melt stirring and gas flow coalescence were studied. An unsymmetric blown was proposed by changing the ratio of gas flow rate and the lance diameter to investigate its effect on gas–matte–slag distribution, velocity distribution, and wall shear stress. The gas coalescence was inhibited by mo......
Effect of Annealing Temperature of Brownish-Red Pigment Based on Iron Oxide Extracted by Hydrothermal Route from Mill-Scale Steel Slag
Journal of Sustainable Metallurgy - Tập 8 - Trang 218-227 - 2022
Materials based on iron oxide are still the most widely used red pigments. Although the synthetic iron oxide pigment industry has matured, there have been continuous efforts for more circular economy-based methods for the production of pigments. In this study, hematite has been extracted by a hydrothermal method from mill-scale steel slag and the brown–red pigment has been prepared. The extraction......
The Twelve Principles of Circular Hydrometallurgy
Journal of Sustainable Metallurgy - Tập 9 - Trang 1-25 - 2022
In this academic position paper, we propose the 12 Principles of a novel and more sustainable approach to hydrometallurgy that we call “circular hydrometallurgy.” The paper intends to set a basis for identifying future areas of research in the field of hydrometallurgy, while providing a “sustainability” benchmark for assessing existing processes and technological developments. Circular hydrometall......
Study on Water Splitting Potential of Some Metallurgical Wastes for Production of Hydrogen
Journal of Sustainable Metallurgy - - 2016
Simulation of Simultaneous Leaching of Copper and Cobalt Minerals in Acid-Reductive Media: Sensitivity Analysis and Optimization
Journal of Sustainable Metallurgy - Tập 8 - Trang 837-850 - 2022
In this study, an ASPEN Plus model in steady state, based on experimental studies, was developed to investigate the leaching behavior of copper and cobalt minerals in sulfuric acid-sodium metabisulfite media. The experimental results indicated that copper and cobalt dissolution efficiencies reach 91 and 72%, respectively. The integration of experimental parameters set-up in the ASPEN Plus simulato......
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