The Study on Leaching Vanadium from Stone Coal with Alkali
The Study on Leaching Vanadium from Stone Coal with Alkali
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发表时间：
2007
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通讯作者：
Shao Yan-hai
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作者：
Shao Yan-hai
采用球团-氧化焙烧-碱浸工艺从石煤中提钒，考察了焙烧温度、焙烧时间、浸出温度、浸出剂浓度、浸出时间对浸出率的影响。结果表明，焙烧温度、浸出温度、浸出剂浓度、浸出时间是影响石煤中钒浸出率的主要因素。最佳工艺条件为：焙烧温度85 0℃，焙烧时间3 h，浸出温度90℃，浸出剂浓度2 m ol/L，浸出时间2 h，浸出时间2 h。浸出L/S为3。
This study used the technique of pelletization-oxidation roasting-alkali leaching to extract vanadium from stone coal,the effects of roasting temperature,roasting time,leaching temperature,leaching agent concentration,leaching time,leaching L/S were investigated.With this technique,it has got a result of leaching rate was as high as 88.38%.The results indicate that roasting temperature,leaching temperature,leaching agent concentration,leaching time were the main factors which affect the leaching rate.The best technique condition is: roasting temperature is 850℃,roasting time is 3h,leaching temperature is 90℃,leaching agent concentration is 2 mol/L,leaching time is 2h,and leaching L/S is 3.