Advancements in the application and mechanism of fine-grained mineral flotation collectors

CHANG Ziyong; LI Yujiao; SHEN Zhengchang; ZOU Laichang; WANG Qiankun; SUN Zhongmei; WANG Huajun

doi:10.13374/j.issn2095-9389.2022.09.23.003

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CHANG Ziyong, LI Yujiao, SHEN Zhengchang, ZOU Laichang, WANG Qiankun, SUN Zhongmei, WANG Huajun. Advancements in the application and mechanism of fine-grained mineral flotation collectors[J]. Chinese Journal of Engineering. doi: 10.13374/j.issn2095-9389.2022.09.23.003

Citation:

CHANG Ziyong, LI Yujiao, SHEN Zhengchang, ZOU Laichang, WANG Qiankun, SUN Zhongmei, WANG Huajun. Advancements in the application and mechanism of fine-grained mineral flotation collectors[J]. Chinese Journal of Engineering. doi: 10.13374/j.issn2095-9389.2022.09.23.003

Citation:

CHANG Ziyong, LI Yujiao, SHEN Zhengchang, ZOU Laichang, WANG Qiankun, SUN Zhongmei, WANG Huajun. Advancements in the application and mechanism of fine-grained mineral flotation collectors[J]. Chinese Journal of Engineering. doi: 10.13374/j.issn2095-9389.2022.09.23.003

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Advancements in the application and mechanism of fine-grained mineral flotation collectors

doi: 10.13374/j.issn2095-9389.2022.09.23.003

1.
School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
2.
State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores, Zijin Mining Group Co., Ltd., Xiamen 364200, China
3.
State Key Laboratory of Mineral Processing Science and Technology, BGRIMM, Beijing 100160, China

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Corresponding author: Email: changziyong@ustb.edu.cn
Received Date: 2022-09-23
Available Online: 2023-07-20

Abstract

Abstract

The poor floatability of fine- and ultrafine-grained minerals, including sulfide and oxide minerals, is a huge issue confronting the mineral industry. Collectors are critical to the flotation of fine-grained minerals; therefore, developing high efficiency collectors has always been a hot research topic for industries and academia. This work has systematically reviewed the advancements in the development of collectors for fine mineral flotation in the last decades as well as provides an outlook for prospective studies. Collectors can be divided into sulfide and oxide mineral collectors, which can be further divided into ionic collectors, nonionic collectors, nonpolar oily collectors, nanocollectors, and biologic collectors based on their chemical composition. For sulfide minerals, ionic collectors mainly include xanthate, phosphate, and diethyldithiocarbamate, which are soluble in water and are able to dissociate sulfur-containing anions to interact with sulfide minerals. Some oily collectors and nanocollectors can also be used for the flotation of ultrafine sulfide minerals. For oxide minerals, the commonly used anionic collectors are hydroxamate, phosphate, arsenate, and fatty acid, while cationic collectors mainly comprise amine collectors. Nonionic and biologic collectors are used in oxide mineral flotation. Mechanisms underpinning the adsorption of collectors on the mineral surface include electrostatic interactions, chelation interactions, hydrogen bonding, chemical bonding, and metal-ion coordination. In addition, composite collectors, such as anionic/anionic collectors, anionic/cationic collectors, cationic/cationic collectors, and ionic/nonionic collectors, exhibit high collection capability for fine-grained minerals compared to single collectors. This is because they can promote collector adsorption on mineral surfaces through a series of synergistic interactions, such as co-adsorption, charge compensation, function complementarity, and variations in the critical micelle concentration. The rapid development of computational chemistry and artificial intelligence can help in investigating the quantitative relationship between the molecular structures of collectors and their collecting capability for fine minerals, thereby promoting the development of highly efficient novel collectors that uses shorter time for flotation. Increased effort is required for the development and utilization of harmless green collectors due to the rigid environmental requirement, and they are vital to the development of the mineral industry. In addition, nanocollectors will also gain increasing attention due to their unique physical and chemical properties and advantages over conventional collectors. Therefore, this paper is of great guiding significance for the development and application of fine-grained mineral flotation collectors.
- flotation collector,
- fine-grained minerals,
- composite collector,
- nanocollector,
- mechanisms

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References(87)

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