Utilization of coal slime: Coal and kaolinite separation by classification, forward and reverse flotation method

• Autorzy: Shen Liang , Qiao Erle , Liu Lingyun , Xue Changguo , Liu Binghe , Min Fanfei

Identyfikatory

DOI

10.37190/ppmp/147742

• Języki publikacji: EN

Abstrakty

EN

Coal slime is not only a solid waste, but also a source of energy. With the improvement of environmental protection requirements, the comprehensive utilization of slime has become an urgent problem for coal preparation plants. In this paper, we put forward a promising way of coal slime resource utilization. X-ray diffraction (XRD), X-ray fluorescence spectrometer (XRF) and laser particle sizer was used to analyze the properties of coal slime. Obtained results showed that the slime was mainly composed of the coal, kaolinite and quartz with a particle size of -100 μm. Most kaolinite minerals can be enriched in overflow when the feed pressure is 0.2 MPa by using hydrocyclone. 21.3% clean coal with ash content of 12.3% and 33.46% kaolinite with particle size of -5 μm can be recovered by forward flotation and reverse flotation respectively. Coal water slurry with 61% concentration can be prepared from reject of forward flotation and concentrate of reverse flotation at shear rate of 100 s-1. This study has an important practical application value in clean and efficient utilization of coal.

Słowa kluczowe

EN

coal slime; classification; forward flotation; reverse flotation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2022
• Tom: Vol. 58, iss. 3
• Strony: art. no. 147742
• Opis fizyczny: Bibliogr. 34 poz., rys., wykr.

Twórcy

autor

Shen Liang

• State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Huainan 232001, Anhui, China
• College of Material Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China

autor

Qiao Erle

• College of Material Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China

autor

Liu Lingyun

• College of Material Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China

autor

Xue Changguo

• College of Material Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China

autor

Liu Binghe

• College of Material Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China

autor

Min Fanfei

• College of Material Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).