含钾页岩综合利用技术研究

Study on Comprehensive Utilization of Shale Containing Kalium

通过用碳酸钾将不溶性的含钾页岩在高温条件下转化成酸溶性固体,再经硫酸酸化后,即可将含钾页岩中的氧化钾等含钾化合物制备成硫酸钾。接着利用氢氧化铁、二氧化硅以及氢氧化铝的溶解性不同,采用调节p H的方法分离出氢氧化铁、二氧化硅以及氢氧化铝后,再将溶液蒸发结晶即可得硫酸钾。本技术综合利用了不溶性含钾岩石的各种有价元素,有效降低了各种产品的生产成本,具有有较好的经济效益。

By using potassium carbonate insoluble potassium shale in the condition of high temperature into acid soluble solid, and then by sulfuric acid, can be in potassium shale potassium oxide potassium containing compound preparation into potassium sulfate. Then use the iron hydroxide, silicon dioxide and dissolved aluminum hydroxide is different, with a p H value adjusting method separating iron hydroxide, silicon dioxide and aluminum hydroxide, then the solution evaporation crystallizing to obtain potassium sulfate.