一种用于酸性条件下胶磷矿反浮选脱硅的新型阳离子捕收剂

吴中贤; 陶东平; 陶有俊; 蒋曼; Zhang Patrick

doi:10.1007/s12613-022-2580-7

Volume 30 Issue 6

Jun. 2023

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文章导航 > 矿物冶金与材料学报（英文） > 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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研究论文

一种用于酸性条件下胶磷矿反浮选脱硅的新型阳离子捕收剂

1)
山东理工大学资源与环境工程学院, 淄博 255049, 中国
2)
中国矿业大学煤炭加工与高效洁净利用教育部重点实验室, 徐州 221116, 中国
3)
中国矿业大学化工学院, 徐州 221116, 中国
4)
Florida Industrial and Phosphate Research Institute, Florida Polytechnic University, Florida 33830, USA

通讯作者:
陶东平 E-mail: dptao@qq.com

陶有俊 E-mail: tyj05160@163.com

文章亮点

1. 新型捕收剂的主要成分均为化工厂副产品，是一种价格低廉的原料

2. 新型捕收剂具有捕收力强、选择性好、适应较宽浮选矿浆pH等优点。

3. 相比其他传统阳离子脱硅药剂，该新型药剂具有消泡速率快的优点

中文摘要

针对目前胶磷矿反浮选脱硅阳离子捕收剂的选择性差、仅适用于弱碱性矿浆条件、消泡难等问题，本研究采用主要成分为十六烷基三甲基溴化铵（CTAB）和邻苯二甲酸二丁酯（DBP）的两种化工厂副产品研发了一种新型、经济、高效的胶磷矿反浮选脱硅阳离子捕收剂。在微浮选试验中，当pH值为6–10，新型捕收剂用量为25 mg·L⁻¹时，石英和氟磷灰石纯矿物之间存在显著的可浮性差异。在pH值为6，新型捕收剂用量为0.4 kg·t⁻¹时，对脱镁磷精矿进行粗选脱硅浮选试验，获得了P₂O₅品位为29.33wt%、SiO₂品位为12.66wt%、P₂O₅回收率为79.69wt%的胶磷矿精矿指标。利用FTIR、Zeta电位和接触角测量进行机理研究，研究结果表明新型捕收剂对石英的吸附能力高于氟磷灰石，同时DBP的协同效应也增强了石英和氟磷灰石之间疏水性的差异。泡沫稳定性试验结果表明，新型阳离子捕收剂的最大消泡率可达142.8 mL·min⁻¹，其消泡速率远高于其他常见传统阳离子捕收剂。

关键词:

Research Article

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

+ Author Affiliations

1)
School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China
2)
Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, China University of Mining & Technology, Xuzhou 221116, China
3)
School of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China
4)
Florida Industrial and Phosphate Research Institute, Florida Polytechnic University, Florida 33830, USA

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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