正交试验法确定低品位钾矿溶解的最佳条件  

Optimum conditions for dissolution of low grade potassium ore confirmed by orthogonal test

作　　者：姜虹[1] 王晓[1] 王爱丽[1] 

机构地区：[1]青海大学化工学院,青海西宁810016

出　　处：《无机盐工业》2015年第5期24-26,共3页Inorganic Chemicals Industry

基　　金：国家科技支撑项目<盐湖矿区生态保护与水资源高效利用技术集成与示范>(2012BAC09B05)

摘　　要：以青海马海盐矿为原料,采用正交试验法研究盐矿中K+、Na+的溶解规律。一定的溶矿时间后,用正交试验法研究了液固比、溶剂中氯化钠的含量及溶剂中氯化镁的含量这3个素对矿液中K+、Na+含量的影响,并对正交试验的结果做了SPSS分析。3因素对试验结果中K+、Na+含量影响的主次顺序:液固比>溶剂中氯化钠的含量>溶剂中氯化镁的含量。实验确定了溶矿的最佳条件:液固比为1∶0.5、溶剂中氯化钠的质量分数为其饱和度的50%、溶剂中氯化镁的质量分数为3%。最佳条件下KCl的质量分数大于1.2%,符合要求,且Na Cl的溶解量很小,达到不使盐矿骨架坍塌的要求。With Mohair salt mine, in Qinghai Province as raw material, the dissolution laws of K＋ and Na＋ from the salt mine were studied by orthogonal experiments.After a certain time of dissolution mine ,the influences of three factors ,ratio of liquid to solid, sodium chloride content in the solvent, and magnesium chloride content in the solvent on the contents of K＋ and Na＋ in the liquid were investigated by orthogonal test method and the experiment results were analyzed with SPSS. The test results showed the influencing order for K＋ and Na＋ contents was：liquid to solid ratio〉sodium chloride in solvent〉magnesium chloride in solvent.The optimum conditions for the mineral dissolution were confirmed as follows：liquid-solid ratio was 1：0.5 ,the content of sodium chloride was 50% （mass fraction, and same below） of its saturation in the solvent, the content of magnesium chloride was 3% in the solvent.Under optimal conditions the content of KCl was more than 1.2% which met the relevant requirements,and the small amount of dissolved NaCl also reached the requirements that the salt mine skeleton will not collapse.

关 键 词：盐矿溶解 正交试验 

分 类 号：TQ131.13[化学工程—无机化工]