A novel cationic collector for silicon removal from collophane using reverse flotation under acidic conditions

Zhongxian Wu; Dongping Tao; Youjun Tao; Man Jiang; Patrick Zhang

doi:10.1007/s12613-022-2580-7

Volume 30 Issue 6

Jun. 2023

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2023 > 30(6): 1038-1047

Zhongxian Wu, Dongping Tao, Youjun Tao, Man Jiang, and Patrick Zhang, A novel cationic collector for silicon removal from collophane using reverse flotation under acidic conditions, Int. J. Miner. Metall. Mater., 30(2023), No. 6, pp. 1038-1047. https://doi.org/10.1007/s12613-022-2580-7

Cite this article as:

Zhongxian Wu, Dongping Tao, Youjun Tao, Man Jiang, and Patrick Zhang, A novel cationic collector for silicon removal from collophane using reverse flotation under acidic conditions, Int. J. Miner. Metall. Mater., 30(2023), No. 6, pp. 1038-1047. https://doi.org/10.1007/s12613-022-2580-7

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Research Article

A novel cationic collector for silicon removal from collophane using reverse flotation under acidic conditions

+ Author Affiliations

Corresponding authors:
Dongping Tao E-mail: dptao@qq.com

Youjun Tao E-mail: tyj05160@163.com
Received: 2 September 2022; Revised: 28 November 2022; Accepted: 1 December 2022; Available online: 3 December 2022

Abstract

Abstract

We analyzed a novel cationic collector using chemical plant byproducts, such as cetyltrimethylammonium bromide (CTAB) and dibutyl phthalate (DBP). Our aim is to establish a highly effective and economical process for the removal of quartz from collophane. A microflotation test with a 25 mg·L⁻¹ collector at pH value of 6–10 demonstrates a considerable difference in the floatability of pure quartz and fluorapatite. Flotation tests for a collophane sample subjected to the first reverse flotation for magnesium removal demonstrates that a rough flotation process (using a 0.4 kg·t⁻¹ new collector at pH = 6) results in a collophane concentrate with 29.33wt% P₂O₅ grade and 12.66wt% SiO₂ at a 79.69wt% P₂O₅ recovery, providing desirable results. Mechanism studies using Fourier transform infrared spectroscopy, zeta potential, and contact angle measurements show that the adsorption capacity of the new collector for quartz is higher than that for fluorapatite. The synergistic effect of DBP increases the difference in hydrophobicity between quartz and fluorapatite. The maximum defoaming rate of the novel cationic collector reaches 142.8 mL·min⁻¹. This is considerably higher than that of a conventional cationic collector.
- cationic collector;
- collophane;
- defoaming;
- quartz;
- reverse flotation

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