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系统研究了石煤提钒中影响钒浸出率的主要因素。试验研究表明:浸出时间3~4 h、浸出温度150~180℃、硫酸用量25%~30%、液固比1.2∶1~1.5∶1、原料粒度150~250目是最为经济可行的工艺参数范围。钒浸出率最高可达91%。
The main factors influencing the leaching rate of vanadium in stone coal are studied systematically. The experimental results show that the leaching time is 3 ~ 4 h, the leaching temperature is 150 ~ 180 ℃, the dosage of sulfuric acid is 25% ~ 30%, the liquid-solid ratio is 1.2:1 ~ 1.5:1, and the raw material particle size of 150 ~ 250 mesh is the most economical and feasible process parameter range. Vanadium leaching rate up to 91%.