磷矿系含钾页岩的湿法酸耦合提钾  

Potassium extraction from potassium bearing shale in phosphate ore by wet coupled sulfuric acid and phosphoric acid

作　　者：万革枝 王岩[2] 陈金芳[3] 

机构地区：[1]武汉工程大学化工与制药学院,湖北武汉430074 [2]湖北省新型反应器与绿色化学工艺重点实验室,湖北武汉430074 [3]武汉工程大学绿色化工过程教育部重点实验室,湖北武汉430074

出　　处：《化工矿物与加工》2016年第1期4-7,共4页Industrial Minerals & Processing

摘　　要：根据磷矿系含钾页岩的特点,研究了湿法磷、钾耦合酸浸提钾的工艺条件,在含钾页岩与磷矿的质量配比为0.8,硫酸质量分数为50%,液固比为3,反应温度120℃和反应时间5h的条件下,钾的浸出率达到76.08%。The process conditions of extracting potassium by wet coupled sulfuric acid and phosphoric acid were investigated in light of the properties of potassium bearing shale in phosphate ore. With mass ration of potassium bearing shale to phosphate ore be- ing 0. 8, ratio of liquid-to-solid 3, concentration of sulfuric acid 50%, reaction temperature 120 ℃ and reaction time 5 hrs,the ex- tracting ratio of potassium could be up to 76.08%.

关 键 词：难溶性钾矿 磷矿 酸浸提钾 热力学 

分 类 号：TQ443.5[化学工程—化学肥料工业]