酸化水玻璃和羧甲基纤维素作组合抑制剂对滑石浮选的强化抑制机理

薛季玮; 涂华臻; 史巾; 安艳妮; 宛鹤; 卜显忠

doi:10.1007/s12613-022-2582-5

Volume 30 Issue 7

Jul. 2023

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文章导航 > 矿物冶金与材料学报（英文） > 2023 > 30(7): 1310-1319

Jiwei Xue, Huazhen Tu, Jin Shi, Yanni An, He Wan, and Xianzhong Bu, Enhanced inhibition of talc flotation using acidified sodium silicate and sodium carboxymethyl cellulose as the combined inhibitor, Int. J. Miner. Metall. Mater., 30(2023), No. 7, pp. 1310-1319. https://doi.org/10.1007/s12613-022-2582-5

Cite this article as:

Jiwei Xue, Huazhen Tu, Jin Shi, Yanni An, He Wan, and Xianzhong Bu, Enhanced inhibition of talc flotation using acidified sodium silicate and sodium carboxymethyl cellulose as the combined inhibitor, Int. J. Miner. Metall. Mater., 30(2023), No. 7, pp. 1310-1319. https://doi.org/10.1007/s12613-022-2582-5

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研究论文

酸化水玻璃和羧甲基纤维素作组合抑制剂对滑石浮选的强化抑制机理

1)
西安建筑科技大学资源工程学院, 西安 710055, 中国
2)
矿物加工科学与技术国家重点实验室, 北京 100260, 中国
3)
中冶北方工程技术有限公司, 大连 116600, 中国

通讯作者:
卜显忠 E-mail: buxianzhong@xauat.edu.cn

文章亮点

(1) 采用酸化水玻璃和羧甲基纤维素作组合抑制剂可以实现黄铜矿和滑石的有效分离。

(2) 深入探究了组合抑制剂对滑石的强化抑制机理。

(3) 添加酸化水玻璃可以明显改善矿浆分散性，进而有利于羧甲基纤维素在滑石表面的吸附。

中文摘要

黄铜矿和滑石天然可浮性相近，因此两种矿物的浮选分离难度较大。同时，在黄铜矿浮选过程中仅添加羧甲基纤维素也难以实现滑石的有效抑制。本研究发现采用酸化水玻璃和羧甲基纤维素作为组合抑制剂可以实现黄铜矿和滑石的有效分离，并深入探究了组合抑制剂对滑石的强化抑制机理。结果表明，添加酸化水玻璃可以强化羧甲基纤维素对滑石的抑制作用，并可以提高黄铜矿和滑石的浮选分离效果。动电位、红外光谱和X射线光电子能谱分析结果表明，羧甲基纤维素主要通过羟基和羧基吸附在滑石表面，并且酸化水玻璃的添加提高了羧甲基纤维素在滑石表面的吸附。除此之外，吸附量测定和表观粘度分析结果表明添加酸化水玻璃可以明显改善矿浆分散性，这进一步降低了矿浆表观粘度，提高了羧甲基纤维素在滑石表面的吸附量，最终强化了黄铜矿浮选过程中组合抑制剂对滑石的抑制作用。

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Research Article

Enhanced inhibition of talc flotation using acidified sodium silicate and sodium carboxymethyl cellulose as the combined inhibitor

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Abstract

Abstract

The flotation separation of chalcopyrite and talc is challenging due to their similar natural floatability characteristics. Besides, it is usually difficult to effectively inhibit talc by adding sodium carboxymethyl cellulose (CMC) alone during chalcopyrite flotation. Here, a combined inhibitor comprising acidified sodium silicate (ASS) and CMC was employed to realize effective flotation separation of chalcopyrite and talc, and the combined inhibition mechanism was further investigated. Microflotation results showed that adding ASS strengthened the inhibitory effect of CMC on talc and improved the separation of chalcopyrite and talc. The zeta potential, Fourier transform infrared, and X-ray photoelectron spectroscopy analysis indicated that CMC was mainly adsorbed on the talc surface via hydroxyl and carboxyl groups. Moreover, the addition of ASS improved the adsorption of carboxyl groups. Furthermore, the adsorption experiments and apparent viscosity measurements revealed that adding ASS dispersed the pulp well, which reduced the apparent viscosity, improved the adsorption amount of CMC on the talc surface, and enhanced the inhibition of talc in chalcopyrite flotation.
- talc;
- chalcopyrite;
- flotation;
- combined inhibitor;
- apparent viscosity

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