摘要
研究了采用空白焙烧—酸浸工艺从某石煤钒矿中提取钒,考察了磨矿细度、焙烧时间、焙烧温度、硫酸用量、助浸剂CaF_(2)用量、浸出温度、浸出时间和液固体积质量比对钒浸出率的影响。结果表明:适宜的空白焙烧条件为磨矿细度-74μm占70%,焙烧温度775℃和焙烧时间5 h;适宜的酸浸条件为硫酸用量10%、助浸剂CaF_(2)用量3%,液固体积质量比1.5∶1,浸出温度25℃和浸出时间1.5 h;适宜条件下,钒浸出率可达81.5%。
Leaching of vanadium from stone coal vanadium ore by blank roasting—acid leaching process was studied.The effects of grinding fineness,roasting time,roasting temperature,sulfuric acid addition dosage,leaching aid CaF_(2) addition dosage,leaching temperature,leaching time and liquid volume to solid mass ratio on vanadium leaching rate were investigated.The results show that the optimum blank roasting conditions are grinding fineness 70%of-74μm,roasting temperature of 775℃and roasting time of 5 h.The optimum acid leaching conditions are sulfuric acid addition dosage of 10%,leaching aid CaF_(2) addition dosage of 3%,liquid volume to solid mass ratio of 1.5∶1,leaching temperature of 25℃and leaching time of 1.5 h.Under suitable conditions vanadium leaching rate can reach 81.5%.
作者
王祥
吴天娇
WANG Xiang;WU Tianjiao(Xi’an Northwest Nonferrous Geological Research Institute Co.,Ltd.,Xi’an 710054,China;Shaanxi Engineering and Technology Research Center for Comprehensive Utilization of Mineral Resources,Xi’an 710054,China)
出处
《湿法冶金》
CAS
北大核心
2024年第3期224-229,共6页
Hydrometallurgy of China
关键词
石煤钒矿
空白焙烧
酸浸
硫酸
钒
stone coal vanadium ore
blank roasting
acid leaching
sulfuric acid
vanadium
