Suppression of serpentine slime in acid flotation and its effect on flotation of copper-nickel sulfide ore

被引：0
|
作者：
Hu C. [1 ]
Chen W. [2 ,3 ]
Xu P.-Y. [2 ,4 ]
机构：
[1] Northwest Mining and Geology Group Co., Ltd., for Nonferrous Metals, Xi'an
[2] State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining and Metallurgy, Beijing
[3] School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an
[4] GEM Co., Ltd., Shenzhen
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2021年 / 31卷 / 01期
基金：
中国博士后科学基金;
关键词：
Carboxymethyl cellulose; Copper-nickel sulfide ore; Flotation; Serpentine; Slime;
D O I：
10.11817/j.ysxb.1004.0609.2021-36505
中图分类号：
学科分类号：
摘要：
The optimization effect of carboxymethyl cellulose(CMC) in the acid flotation of vulcanized copper-nickel was studied in order to eliminate the oxide film on the surface of Copper-Nickel sulfide ore and inhibit the influence of magnesium-containing mineral, such as serpentine. And the mechanism of CMC's action was discussed. The results show that the floatability of copper-nickel sulfide ore can be significantly enhanced by the pretreatment of 1×10-3 mol/L hydrogen chloride solution and 20 min ultrasonic. And there can obtain a better recovery rate in the wider pH range of acid flotation. After adding 20 mg/L CMC to the ore slurry with pH of 3, the nickel grade of concentrate and the recovery rate increase to 19.42% and 60.05%, respectively, which are 1.78% and 22.79% higher than those without CMC. It is the main reason for optimizing the flotation that the CMC has selective suppression of serpentine slime. The turbidity and surface dynamic potential test show that the dosage of CMC must be controlled within 20 mg/L. The excess CMC has a cohesion effect, which is not conducive to dispersion between the mud particles. © 2021, Science Press. All right reserved.
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页码：211 / 221
页数：10
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