Pyrite depression in marmatite flotation by sodium glycerine-xanthate  

使用抑制剂甘油基黄原酸钠浮选分离铁闪锌矿与黄铁矿(英文)

作　　者：何名飞[1] 覃文庆[1] 黎维中[1] 曾科[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：《Transactions of Nonferrous Metals Society of China》2011年第5期1161-1165,共5页中国有色金属学报（英文版）

基　　金：Project (50774094) supported by the National Natural Science Foundation of China

摘　　要：The depression of pyrite in marmatite flotation by sodium glycerine-xanthate （SGX） was investigated through microflotation, zeta potential and adsorption measurements. The flotation tests of mineral show that in the presence of SGX, marmatite can be activated by Cu^2＋ and shows good flotability, while pyrite cannot be activated and therefore shows poor flotability. At the pH value range from 4 to 11, the flotation selectivity between marmatite and pyrite is obvious when the SGX concentration is below 50 mg/L. The depression mechanism of SGX on sulfide minerals is discussed based on zeta potential and adsorption isotherm. Zeta potential measurement demonstrates that in the presence of Cu^2＋, SGX can strongly adsorb on the surface of pyrite, while it cannot adsorb on the surface of marmatite. The results of adsorption isotherms show that the adsorption density of SGX on pyrite is greater.研究抑制剂甘油基黄原酸钠(SGX)在铁闪锌矿与黄铁矿浮选分离过程中的作用机理。通过浮选实验考察该抑制剂对硫化矿物的浮选抑制行为。结果表明,用丁黄药作捕收剂,在SGX存在下铁闪锌矿能被Cu2+活化从而具有良好的可浮性,而黄铁矿不能被Cu2+活化;在pH为4-11的范围,SGX的用量小于50mg/L时,可以实现两种矿物的选择性分离。动电位分析表明,SGX在Cu2+存在的条件下不能阻止丁黄药的阴离子在铁闪锌矿表面的吸附,但能阻止丁黄药的阴离子在黄铁矿表面的吸附。吸附等温测试结果表明,SGX在黄铁矿表面的吸附量远比在铁闪锌表面量大。

关 键 词：FLOTATION sodium glycerine-xanthate marmitite PYRITE 

分 类 号：TD95[矿业工程—选矿]