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过氧化氢表面改性强化硫化浮选赤铜矿

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使用过氧化氢作为氧化剂对赤铜矿表面进行改性处理以实现赤铜矿的强化硫化.表面吸附和红外光谱实验结果表明,硫化前使用过氧化氢对赤铜矿表面进行改性可增加黄药在赤铜矿表面的吸附量.Zeta电位、扫描电子显微镜、X射线光电子能谱和飞行时间二次离子质谱实验结果表明,经过氧化氢改性后的赤铜矿表面生成了更多的S2−和Sn2−组分.微浮选实验结果表明,经过氧化氢改性后的赤铜矿浮选回收率从61.74％增加到83.30％.微浮选实验与表面测试分析结果证实,过氧化氢对赤铜矿表面的改性处理能增强赤铜矿表面的硫化过程,从而改善赤铜矿的浮选行为.
Enhanced sulfidization flotation of cuprite by surface modification with hydrogen peroxide
Hydrogen peroxide was used as an oxidant to modify the cuprite surface and enhance its sulfidization. Surface-adsorption and infrared spectroscopy measurements indicated that the modification of the cuprite surface with hydrogen peroxide before sulfidization increased the adsorption capacity of xanthate. Zeta potential, scanning electron microscopy-energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and time-of-flight secondary ion mass spectrometry results showed that the modification with hydrogen peroxide increased the contents of S2− and Sn2− species on the cuprite surface. Microflotation tests showed that the recovery of cuprite increased from 61.74％ to 83.30％ after the modification of the surface with hydrogen peroxide. These results confirm that the modification of the cuprite surface with hydrogen peroxide enhances the sulfidization of cuprite, which in turn improves its flotation.

cupriteflotationhydrogen peroxidesurface modificationsulfidization

韩广、文书明、王涵、丰奇成

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昆明理工大学 国土资源工程学院 省部共建复杂有色金属资源清洁利用国家重点实验室,昆明 650093

赤铜矿 浮选 过氧化氢 表面改性 硫化

authors would like to acknowledge the Project funded by Ten Thousand Talent Plans for Young Top-notch Talents of Yunnan Prov

YNWR-QNBJ-2018-051

2021

10.1016/S1003-6326(21)65748-5

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCDCSCDSCI
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2021.31(11)
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