硫酸盐型钾盐浮选尾矿的矿质分析及浸取实验研究  

Study on the Leaching of Sulfate-type Potash Flotation Tailing

作　　者：谢绍雷[1] 吕颖[1] 汪小涵[1] 纪律 陈高琪 贾永忠[1] 

机构地区：[1]中国科学院青海盐湖研究所,青海西宁810008 [2]茫崖兴元钾肥有限责任公司,青海格尔木816000

出　　处：《盐湖研究》2015年第3期52-57,共6页Journal of Salt Lake Research

基　　金：国家自然科学基金项目"Na+;K+;Mg2+//Cl-;SO2-4-H2O体系低温介稳态相化学关系及冷冻结晶规律研究"(21373252)

摘　　要：针对青海大浪滩盐湖地区钾盐浮选尾矿,研究了尾矿中钾盐的赋存形式,并探索了以稀释老卤为溶剂浸取尾矿中钾的优化条件。结果表明,钾主要以钾石盐矿的形式存在于尾矿中,该矿样属于典型的硫酸镁亚型矿质。同时,考察了不同稀释倍数的老卤的物理性质变化,得到了室温条件下该钾盐浮选尾矿最适宜的浸取条件,老卤/淡水的比例为1∶4,固/液比为3∶2,搅拌反应1 h。在优化条件下,得到了钾离子含量为3.93%的富钾卤水,此时K+浸取率达到86.9%,该卤水进一步蒸发结晶可得到软钾镁矾。本研究为低品位硫酸盐型钾矿的综合开发利用提供了数据支持和参考。In this paper, the anthors reported that the occurrence form of sulfate-type potash flotation tail- ing in Qinghai Dalangtan salt lake region and explored the optimal leaching condition of potash flotation tailing by dilute bittern for solvent. The results showed that the sylvinite mine is potassium mainly exist- ence form in tailings, properties of different belongs to the typical magnesium sulfate subtype mineral. Meanwhile, the physical diluted multiples bittern were investigated and the optimum leaching conditions of potash flotation tailings at room temperature were obtained. When the old brine/water ratio of 1 ： 4, solid/ liquid ratio of 3 ： 2, mixing stirring reaction time 1 h, the potassium ion content of the rich potassium brine is 3.93%, an the leaching rate is 86.9%. By further evaporation crystallization the rich potassi- um brine, the picroh,erite products could be gained. This study can provide a theoretical and technical references based on comprehensive exploitation and utilization of low grade potassium sulfate-type mine.

关 键 词：硫酸盐型 低品位钾 尾矿 浸取 

分 类 号：TD923[矿业工程—选矿]