粗粒浮选法回收盐湖钾盐的研究  

Research on the Extraction of Potassium from Bittern by the Method of Coarse Particle Flotation

作　　者：黄丽亚[1] 陈波[1,2] 

机构地区：[1]福州大学紫金矿业学院,福州350108 [2]紫金矿冶设计研究院,福建上杭364200

出　　处：《有色金属（选矿部分）》2013年第5期36-38,49,共4页Nonferrous Metals（Mineral Processing Section）

基　　金：福州大学育苗基金资助项目(12011-xy-26)

摘　　要：盐湖中含有大量的钾盐,但是由于钾的含量过低,不能直接用于农业生产。传统方法回收钾盐主要是通过离子交换法以及结晶—磨矿—浮选,但是该法在提取钾盐过程中,产生大量细粒的精矿,产品不容易干燥,生产成本高,限制了盐湖钾盐的利用。在本试验研究中,采用粗粒浮选法回收盐湖钾盐,经过结晶的钾盐直接进入浮选,无须磨矿过程,避免产生细粒钾盐产品。在研究过程中,采用新的钾盐浮选抑制剂HY进行试验。最优的试验条件为:浮选矿浆浓度为50%,十六胺用量90 g/t,淀粉用量300 g/t,HY用量15 g/t,得到品位为32.97%、回收率高达84.23%的氯化钾精矿。There was a large quantity of sylvite resources in the salt lake, due to the low concentration of sylvite, it could not used the agriculture directly. Traditionally, the sylvite was recycled by ion exchange method and the process of crystallization and grinding and flotation was also used to treat the bittern. But during the potassium extraction process, a large quantity of fine size concentrate which is difficult to be dried and high cost to be produced was generated, so it limits the utilization of the sylvite resources. The method of coarse size flotation was applied to recovery of sylvite. The crystalline sylvite was directly into the flotation operation without grinding stage that avoided the generation of fine particle. A new type of depressant HY was used in sylvite flotation for inhibiting gangue minerals in the test. The optimal experimental requirements were determined： pulp mass concentration 50%, cetylamine 90 g/t, starch 300 g/t, HY 15 g/t, finally the grade and recovery of sylvite concentrate reached 32.97% and 84.23% respectively.

关 键 词：盐湖 钾盐 粗粒浮选 

分 类 号：TD971.1[矿业工程—选矿] TD923