油酸钠体系下方铅矿和黄铁矿的可浮性  

Floatability of pyrite and galena in the presence of sodium oleate

作　　者：欧乐明[1] 曾培[1] 张国范[1] 冯其明[1] 张佰发 

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2017年第8期1965-1971,共7页Journal of Central South University:Science and Technology

基　　金：国家重点基础研究发展计划(973计划)项目(2014CB643402)~~

摘　　要：通过浮选溶液化学、电位测试和红外光谱测试等手段,研究油酸钠体系下方铅矿和黄铁矿的可浮性及吸附机理。研究结果表明:当pH为6.0~11.5时,在油酸钠体系下,方铅矿具有很好的可浮性;当pH>12.0时,方铅矿的可浮性变差;pH对黄铁矿的可浮性影响较小,在广泛的pH范围内黄铁矿的可浮性都较差;当pH为6.0~10.0时,油酸的离子-分子缔合物是油酸钠在硫化矿浮选过程中的有效组分;当pH为10.0时,经油酸钠作用后,方铅矿表面出现油酸铅的吸收峰,而黄铁矿表面没有明显的油酸铁吸收峰。The floatability and adsorption mechanism of sodium oleate on galena and pyrite were studied by flotation solution chemistry calculation, potentiostatic test and infrared spectroscopic analysis. The results show that galena has good floatability in pH range of 6.0-11.5 in the presence of sodium oleate. But when pH value is over 12.0, the floatability of galena decreases sharply. pH has little influence on the floatability of pyrite which is very poor in a wide pH range. In pH range of 6.0-10.0, oleate ion-molecule association complex is an effective component when sodium oleate collects sulphide ore. When pH value is 10.0, the absorption peak of lead oleate is found on the galena surface after reacting with sodium oleate. By contrast, there is no obvious ferric oleate absorption peak on the pyrite surface.

关 键 词：油酸钠 方铅矿 黄铁矿 可浮性 吸附机理 

分 类 号：TD91[矿业工程—选矿]