用硫酸盐法从锂云母中浸取锂  

Lithium Leaching from Lithium-mica Using Sulfate

作　　者：舒启溢[1] 胡炜华[2] 邱祖民[1] 

机构地区：[1]南昌大学环境与化学工程学院,江西南昌330031 [2]南昌大学期刊社,江西南昌330047

出　　处：《南昌大学学报（工科版）》2011年第4期325-327,共3页Journal of Nanchang University(Engineering & Technology)

基　　金：江西省自然科学基金资助项目(2009GZH0075)

摘　　要：以锂云母精矿为原料,考察了用硫酸盐法浸取锂时的煅烧温度、煅烧时间、酸矿质量比、酸化焙烧时间等影响因素。结果表明:适当升高煅烧温度、增加煅烧时间、增大酸矿质量比、增加焙烧时间均有利于锂的溶出。最佳反应条件为:950℃煅烧2 h,浓硫酸酸化焙烧3 h,酸矿质量比为1.5∶1,在此条件下锂的溶出率可达到96.95%。This paper investigated some influential factors on lithium leaching from the lithium-mica, such as raw material calcination temperature, calcination time, mass ratio of acid to mine, and acid roasting time. The results indicated that appropriate increasing calcination temperature, calcination time, the molar ratio of acid to mine and the roasting time were conducive to the dissolution of lithium, and the lithium extraction rate could reach up to 96.95% with the optimum reaction conditions of calcination time （2 h） at 950℃,concentrated sulfuric acid roast- ing 3 h,the molar ratio of acid to mine 1.5 ： 1.

关 键 词：锂云母 硫酸盐 浸取 锂 

分 类 号：O614.111[理学—无机化学]