Study on Direct Acid Leaching Vanadium without Grinding and Roasting from Clay Vanadium Ore in Hunan

Abstract:

Abstract：A new technology of direct acid leaching vanadium without grinding and roasting was put forward, and the effects of leaching factors including dosage of sulfuric acid, type and dosage of assistant leaching agent, leaching time and temperature, liquid-solid ratio on the vanadium leaching rate were systematically investigated. The results show that vanadium leaching rate could be up to 92.58% under the optimal conditions of sulfuric acid dosage of 30%, MnO2 as assistant leaching agent and its dosage of 1.5%, leaching time of 6h, leaching temperature of 90°C, liquid-solid ratio of 1:1, and the leaching performance is perfect. Due to leaving out the high costing grinding system and the complex roasting system, the new technology has advantages in shortening the process, decreasing the cost, avoiding pollution generated by roasting comparing with the traditional technologies, and it can meet the requirement of modern metallurgy very well.

• Periodical: Applied Mechanics and Materials (Volumes 316-317)
• Pages: 882-886
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.316-317.882
• Online since: April 2013
• Authors: Wei He, Guo Hua Ye, Xiong Tong
• Keywords: Clay Vanadium Ore, Direct Acid Leaching, Leaching Rate, Vanadium Extraction

References

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DOI: 10.1007/s12598-009-0001-y