氧化锌精矿浸出液中脂肪酸有机物脱除的试验研究  

Experimental Research on Removing Oleic Acid from Lixivium of Zinc Oxide

作　　者：欧乐明[1] 万丽[1] 叶家笋[1] 冯其明[1] 

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083

出　　处：《有色金属（选矿部分）》2012年第1期14-17,21,共5页Nonferrous Metals（Mineral Processing Section）

基　　金：国家重点基础研究发展计划(973)项目(2007CB613602)

摘　　要：氧化锌矿物的常用捕收剂为有机胺或脂肪酸,浮选过程中捕收剂吸附在矿物表面进入精矿。氧化锌精矿湿法浸出过程中,矿物表面的捕收剂随浸出过程进入浸出液中,严重影响氧化锌浸出液的电积过程。为了消除浮选过程捕收剂等有机物对氧化锌浸出液电积过程的影响,考察了活性炭吸附法、混凝—沉降法以及气浮法3种方法对脱除浸出液中的有机杂质的影响,并对这3种方法的除杂效果进行了对比。试验结果表明,3种方法中气浮法效果最好,气浮法净化浸出液可使油酸钠脱除率达81.76%,Zn2+保留率高达96.25%,达到最佳除杂效果。Organic amines or fatty acids are commonly used as the collector for zinc oxide ore. The collectors adsorb onto the mineral surfaces and enter the concentrate during flotation. In the leaching process of zinc oxide concentrate, the collectors enter into lixivium and seriously affect the electro- deposition of lixivium. In order to eliminate the effect of organic collector on the electro-deposition of lixivium, active carbon adsorption, coagulation-sedimentation and no-additive air flotation are used to remove the organic impurities from the zinc oxide concentrate lixivium. These three methods are compared as well. It is proved that the removal rate of sodium oleate is 81.76% and the preserving rate of Zn^2＋ is 96.25% by no-additive air flotation method, which achieves the best deputation result.

关 键 词：氧化锌精矿浸出液 脂肪酸 活性炭吸附法 混凝—沉降法 气浮法 

分 类 号：TD952.3[矿业工程—选矿]