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

Jiwei Xue; Huazhen Tu; Jin Shi; Yanni An; He Wan; Xianzhong Bu

doi:10.1007/s12613-022-2582-5

Volume 30 Issue 7

Jul. 2023

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 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

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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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Research Article

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

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Corresponding author:
Xianzhong Bu E-mail: buxianzhong@xauat.edu.cn
Received: 18 August 2022; Revised: 1 December 2022; Accepted: 2 December 2022; Available online: 3 December 2022

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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