Study on Recovery of Sodium Sulfide from Solid Waste in Extraction of Vanadium

ZHANG Shiju

doi:10.13779/j.cnki.issn1001-0076.2021.03.010

2021 Vol. 41, No. 3

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ZHANG Shiju. Study on Recovery of Sodium Sulfide from Solid Waste in Extraction of Vanadium[J]. Conservation and Utilization of Mineral Resources, 2021, 41(3): 66-69. doi: 10.13779/j.cnki.issn1001-0076.2021.03.010

Citation:

ZHANG Shiju. Study on Recovery of Sodium Sulfide from Solid Waste in Extraction of Vanadium[J]. Conservation and Utilization of Mineral Resources, 2021, 41(3): 66-69. doi: 10.13779/j.cnki.issn1001-0076.2021.03.010

Study on Recovery of Sodium Sulfide from Solid Waste in Extraction of Vanadium

ZHANG Shiju

College of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, China

Received Date: 15 March 2021

Publish Date: 25 June 2021

Abstract

Abstract

Solid waste from vanadium extraction contains sodium sulfate and ammonium sulfate. If not treated properly, it will pollute the environment and waste resources. The process of calcination-leaching-evaporation crystallization was designed to treat the solid waste by reducing mirabilite with pulverized coal. Thermodynamic software was used to calculate the theory of recovering sodium sulfide from solid waste of vanadium extraction. The effects of reduction time, leaching temperature and leaching time on product recovery and Na₂S content were studied. The optimal conditions are determined as following reduction time at 4 h, leaching temperature in 75 ℃, leaching time with 6h. Under these conditions sodium sulfide content of the product is 98.41%, and the yield of sodium sulfide is 97.71%.
- vanadium extraction residue /
- sodium sulfide /
- coal reduction glaubers salt method

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References

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