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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Rare Metal Extraction and Processing
Presentation Title Study on Pre–removal Antimony from Antimony–gold Concentrate Using Slurry Electrolysis
Author(s) Yonglu Zhang, Chengyan Wang, Xiaowu Jie, Wei Gao, Shufeng Ruan
On-Site Speaker (Planned) Yonglu Zhang
Abstract Scope Antimony has a negative effect on the gold extraction from antimony–gold concentrate, and it is necessary to remove antimony in advance. For a high calcium low antimony gold concentrate (Ca–Sb–Au ore), this study proposed to pre–remove antimony using slurry electrolysis in HCl–CaCl2 system. The results indicated that the optimal conditions were: CaCl2 300~350 g/L, electric quantity 1.2 times, HCl 30 g/L, time 3.5 h, and temperature 60 ℃. The leaching efficiency of antimony and calcium was higher than 96% and 98%, respectively, and gold was less than 1%. The dissolved antimony can be directly electrodeposited on the cathode to produce metallic antimony, the sulfur present in stibnite was transformed into elemental sulfur remaining in the residue, and the leaching residue can be used as raw material for further gold extraction. Thus, the separation of antimony and gold was achieved.
Proceedings Inclusion? Planned:
Keywords Electrometallurgy, Hydrometallurgy, Other

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Comprehensive Processing of Mica Concentrate from Yaroslavsky GRK for Lithium Carbonate, Potassium Sulfate, Aluminum Sulfate, Rubidium and Cesium
Development of Antagonistic Solvent Extraction Systems for Selective Separation of Copper, Cobalt and Nickel in Ammoniacal Solution
Development of Molten Salt Electrolysis of MgO Using a Metal Cathode and Vacuum Distillation to Produce Ultra-high Purity Mg Metal
Development of New Extractants for Platinum Group Metal Ions in Hydrochloric Acid Solutions
Direct Synthesis of Intermetallic Compounds through Thermo-reduction and Electrochemical Deposition
Effect of Antisolvent Type and Concentration on Morphology and Crystal Size of (NH4)3ScF6 Obtained by Antisolvent Crystallization
Electrochemical Cell Design for Emf Measurements of Liquid Nd-Bi Alloys via Coulombic Titration in LiCl-KCl-NdCl3 Electrolyte
Electrochemical Reduction of Iron Oxides in Aqueous NaOH Electrolyte Including Iron Residue from Nickel and Zinc Electrowinning Processes
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Extraction and Recovery of Rare-earth Elements and Critical Materials from Coal Waste Using Low Cost Processing Methods
Extraction Behaviors of Vanadium(V) with Unacidified- and Acidified-N1923 from a Real Leachate of Vanadium-titanomagnetite
Extraction for Neodymium from NdFeB Magnet Using Supercritical Carbon Dioxide and Organophosphorus Ligands
Extraction of Cerium, Lanthanum, and Neodymium from Alluvial Gold Mining Waste from the Bagre-Nechí Mining District in Colombia
Extraction of Rare Earth Metals from Coal Ash Using Mild Lixiviants in a Single Step Process
Fundamental Study of a Novel Electrolytic Process Using a Cu Cathode in MgF2–LiF–KCl Molten Salt for Producing Mg Metal from MgO
Low-cost Distillation Technology for Rare Earth Recycling
Method for Producing High Purity LiOH.H2O Using Ba(OH)2
Novel Environmentally Friendly Leaching Process for Vanadium and Tungsten Recovery from Spent SCR Catalyst
Physicochemistry in Service of Process Design: Case of Uranium Recovery by Liquid-liquid Extraction
Purification of a Low-grade Molybdenite Ore for Industrial Steel Production
Rare Earth Elements Adsorption to Gypsum in Hydrometallurgical Processes
Research Progress in Biohydrometallurgy of Rare Metals and Heavy Nonferrous Metals with an Emphasis on China
Selective Sulfidation for Rare Earth Element Separation
Study on Pre–removal Antimony from Antimony–gold Concentrate Using Slurry Electrolysis
Tellurium Recovery – Development of a Novel Hydrometallurgical Process
Two-phase Rare-earth Alloys as Reference Electrodes in Molten Chlorides for Reliable Electrochemical Measurements

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