Improving Feldspar Flotation Using CTAB As Amine Collector (Part Two)

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-18 DOI:10.1007/s42461-024-01084-1

Khaled E. Yassin, Mahmoud A. Mohamed, Mohamed G. Khalifa, Ayman A. Hagrass

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Abstract

In this study, feldspar ore was successfully enriched using a two-stage process. Initially, dry magnetic separation was employed to remove iron oxide, followed by cationic flotation to eliminate gangue minerals containing free silica. A feed sample with a size fraction of (− 0.25 + 0.053) mm, pre-treated by attrition scrubbing and dry high-intensity magnetic separation (cleaned twice), was used for flotation. Cetyltrimethylammonium bromide (CTAB) served as a cationic collector for feldspar, while hydrofluoric acid (HF) acted as a depressant for quartz at a pH of 2.5–3. Factors affecting the flotation process were investigated. The flotation resulted in a concentrate with 64.75% SiO₂, 21.00% Al₂O₃, 0.08% Fe₂O₃, 4.00% Na₂O, 10.22% K₂O, and 94.71% feldspar, compared to the feed sample, which contained 76.03% SiO₂, 14.73% Al₂O₃, 0.08% Fe₂O₃, 2.99% Na₂O, 4.77% K₂O, and 59.43% feldspar. Overall, the results indicate that using CTAB as a feldspar collector, combined with a small amount of HF as a quartz depressant in acidic conditions, effectively reduces chemical consumption when compared to alternative methods for treating similar feldspar samples.

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使用 CTAB 作为胺捕收剂改进长石浮选（第二部分）

在这项研究中，采用两阶段工艺成功富集了长石矿石。首先采用干式磁选去除氧化铁，然后采用阳离子浮选去除含有游离二氧化硅的矸石矿物。浮选使用的给矿样品粒度为 (- 0.25 + 0.053) 毫米，经过自然磨损洗涤和干式高强度磁选（两次清洁）预处理。十六烷基三甲基溴化铵（CTAB）作为长石的阳离子捕收剂，而氢氟酸（HF）作为石英的抑制剂，pH 值为 2.5-3。对影响浮选过程的因素进行了研究。浮选产生的精矿含 64.75% SiO2、21.00% Al2O3、0.08% Fe2O3、4.00% Na2O、10.22% K2O 和 94.71% 长石，而给矿样品含 76.03% SiO2、14.73% Al2O3、0.08% Fe2O3、2.99% Na2O、4.77% K2O 和 59.43% 长石。总之，研究结果表明，与处理类似长石样品的其他方法相比，使用 CTAB 作为长石收集剂，结合少量 HF 作为酸性条件下的石英抑制剂，可有效减少化学品消耗。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.