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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Rare Metal Extraction & Processing
Presentation Title Study on recovery of sodium sulfide from solid waste in extraction of vanadium
Author(s) Shiju Zhang
On-Site Speaker (Planned) Shiju Zhang
Abstract Scope Solid waste from vanadium extraction contains sodium sulfate and ammonium sulfate. If not treated properly, it will pollute the environment and waste resources. Sodium sulphide products which meet the national standard of industrial sodium sulphide were prepared by reduction of mirabilite with pulverized coal, calcination-leaching-evaporation crystallization and solid waste extraction of vanadium. Thermodynamic software was used to calculate the theory of recovering sodium sulfide from solid waste of vanadium extraction, design the appropriate test process and carry out the test. The effects of reduction time, leaching temperature and leaching time on product recovery and Na2S content were studied, and the optimum process was finally determined.
Proceedings Inclusion? Planned:
Keywords Sustainability, Environmental Effects, Process Technology

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