不同药剂体系下载金黄铁矿的浮选泡沫性能

Flotation foam performance of gold-bearing pyrite from different reagent systems

本文以黄金矿山主要载金矿物黄铁矿为研究对象,考查了丁基黄药、丁铵黑药、Z200和MA-1四种捕收剂及2^(#)油、煤油、松油、HX-609四种起泡剂的组合泡沫性能。通过浮选试验、泡沫稳定性测试、表面张力检测和黏度检测,比较了各药剂体系下载金黄铁矿的回收效果。结果表明:适宜载金黄铁矿上浮的矿浆pH值约为7,MA-1+HX-609明显优于其他药剂体系。气-固-液三相体系下泡沫稳定性测试结果表明,HX-609发泡高度不如其他起泡剂,但泡沫半衰期更长。结合表面张力和黏度测试结果可知,MA-1+HX-609体系降低矿浆表面张力能力最强,且矿浆黏度较高,泡沫性能更强。鉴于MA-1是一种长碳链黄原酸盐,较其他低碳链药剂,载金黄铁矿疏水能力更强。综合比较,MA-1+HX-609是载金黄铁矿适宜的浮选药剂体系。

Taking pyrite,the main gold-bearing mineral in gold mines,as the research object,this paper investigated the foam performance of four collectors:butyl xanthate,ammonium dibutyl dithiophosphate,Z200,and MA-1,as well as four foaming reagents:2^(#)oil,paraffin,pine oil,and HX-609,in various combinations.Through flotation tests,foam stability tests,surface tension measurements and viscosity measurements,the effects of different reagent systems on the recovery of gold-bearing pyrite were compared.The test results show that the optimal pH value for the flotation of gold-bearing pyrite is about 7,and MA-1+HX-609 is significantly better than other reagent systems.The foam stability test results under the gas-solid-liquid three-phase system show that HX-609 has a longer foam half-life than other foaming reagents,although its foaming height is not as high.The surface tension and viscosity test results indicate that the MA-1+HX-609 system has the strongest ability to reduce the surface tension of the slurry,resulting in higher viscosity and better foam performance.Given that MA-1 is a long carbon chain xanthate,its hydrophobicity towards gold-bearing pyrite is stronger compared to other low carbon chain reagents.In summary,MA-1+HX-609 is a suitable flotation reagent system for gold-bearing pyrite.