Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第29卷    第12期    总第249期    2019年12月

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文章编号:1004-0609(2019)-12-2860-08
氰化黄铜矿表面活化剂的活化机理
邱廷省1, 2,严华山1,袁勤智1

(1. 江西理工大学 资源与环境工程学院,赣州341000;
2. 江西理工大学 江西省矿业工程重点实验室,赣州 341000
)

摘 要: 在氰化黄铜矿浮选试验的基础上,通过微量热法和X射线光电子能谱(XPS)研究次氯酸钠和焦亚硫酸钠对氰化黄铜矿的活化机理。结果表明:氰化黄铜矿不经活化难以浮选,而次氯酸钠和焦亚硫酸钠都对其具有明显的活化效果。丁基黄药在未经活化的氰化黄铜矿表面吸附时的表观活化能较高,而次氯酸钠和焦亚硫酸钠的作用可分别将丁基黄药在氰化黄铜矿表面吸附时的表观活化能减少76.64%和79.84%,大幅降低了捕收剂的吸附难度。次氯酸钠和焦亚硫酸钠的作用可大幅降低氰化黄铜矿表面的CuCN含量,并使表面S元素浓度分别升高43.83%和72.13%,显著改善氰化黄铜矿表面的硫亏损状态。

 

关键词: 氰化渣;黄铜矿;微量热法;活化机理

Activation mechanism of activator on cyanide chalcopyrite surfaces
QIU Ting-sheng1, 2, YAN Hua-shan1, YUAN Qin-zhi1

1. Faculty of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;
2. Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

Abstract:Based on the monomineral flotation test, the activation mechanism of chloros and sodium metabisulfite on cyanide chalcopyrite surfaces was investigated by microcalorimetry and X-ray photoelectron spectroscopy (XPS).The results show that the cyanide chalcopyrite is difficult to be floated without activation, and it can be effectively activated by chloros and sodium metabisulfite. When the butyl xanthate is adsorbed on the cyanide chalcopyrite surfaces before activation, the apparent activation energy is higher. After the treatment with chloros and sodium metabisulfite, the apparent activation energy decreases by 76.64% and 79.84%, respectively, which is beneficial to the adsorption of collectors. The effect of chloros and sodium metabisulfite can significantly reduce the CuCN content on the surface of cyanide chalcopyrite and increase the S concentration by 43.83% and 72.13%, respectively, which significantly improves the sulfur loss on the surface of cyanide chalcopyrite.

 

Key words: cyanide tailings; chalcopyrite; microcalorimetry; activation mechanism

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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