Leaching vanadium by high concentration sulfuric acid from stone coal

An effectively new technology of extracting vanadium from stone coals by high concentration sulfuric acid was researched. The effect of the concentration of sulfuric acid, leaching temperature, leaching time and helper leaching agent on the extraction of vanadium was explored. The results show that...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2010-05, Vol.20 (z1), p.s123-s126
Main Authors: CHEN, Xiang-yang, LAN, Xin-zhe, ZHANG, Qiu-li, MA, Hong-zhou, ZHOU, Jun
Format: Article
Language:English
Subjects:
Coal
Extraction
Leaching
Liquids
Optimization
Stone
stone coal
sulfate solution
Sulfuric acid
Vanadium
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Summary:An effectively new technology of extracting vanadium from stone coals by high concentration sulfuric acid was researched. The effect of the concentration of sulfuric acid, leaching temperature, leaching time and helper leaching agent on the extraction of vanadium was explored. The results show that the optimal conditions of extraction are as follows: the concentration of sulfuric acid is 6 mol/L, the ratio of liquid to solid is 3:1; the temperature is 90 °C; the leaching time is 3–5 h, the diameter of the ore particle is less than 180 μm, and the concentration of helper leaching agent R is 6%. Under these conditions, the extraction of vanadium can reach 95.86%.
ISSN:1003-6326
DOI:10.1016/S1003-6326(10)60025-8