氯化钾浮选阴阳离子混合型捕收剂的复配与应用  

Recombination and application on mixed amine collector(cationic/anionic) for KCl flotation

作　　者：靳莹皓 王思远 于雪峰 王金晶 魏正英 刘利武 田海锋[2] 查飞[2] JIN Yinghao;WANG Siyuan;YU Xuefeng;WANG Jinjing;WEI Zhengying;LIU Liwu;TIAN Haifeng;ZHA Fei(Qinghai Salt Lake Industry Group Company Limited,Geermu 816000,China;Northwest Normal University Chemistry and Chemical Engineering,Lanzhou 730070,China)

机构地区：[1]青海盐湖工业股份有限公司,青海格尔木816000 [2]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《无机盐工业》2023年第10期93-99,共7页Inorganic Chemicals Industry

摘　　要：氯化钾是重要的钾肥,主要通过浮选法从盐湖光卤石矿中分离提取,浮选过程中起核心作用的是捕收剂。但在以传统的十八胺为捕收剂生产氯化钾时,低温下浮选收率较低。基于此,采用药剂复配法开发了一种适用于低温正浮选生产氯化钾的阴阳离子混合型捕收剂。通过接触角和表面张力的测定,初步确定混合捕收剂的最佳配比为x(十二胺)∶x(十八胺)∶x(十二烷基硫酸钠)=20%∶60%∶20%。浮选实验表明,混合捕收剂对氯化钾的浮选收率明显高于十八胺;并且当浮选液相温度降至5℃时,混合捕收剂仍对氯化钾具有良好的捕收能力。Potassium chloride is an important potash fertilizerand,which is mainly produced from salt lake brine by flotation methods.Collector plays a key role in the process of flotation.However,the flotation yield is markedly decreased at low temperatures when the octadecylamine is used as collector to produce potassium chloride.Therefore,the mixed collector(cationic/anionic)was developed in the production of potassium chloride with direct flotation at low temperature by reagent combination method.The optimum molar ratio of mixed collector was initially determined as dodecylamine:octadecylamine:sodium dodecyl sulfate=20%∶60%∶20%by contact angle and surface tension measurements.The flotation experiment showed that the flotation yield of mixed collector for KCl was significantly higher than the octadecylamine.The mixed collector had a higher capacity for potassium chloride when the liquid phase temperature was 5℃.

关 键 词：氯化钾 正浮选 混合捕收剂 

分 类 号：TQ131.13[化学工程—无机化工]