The influence of micro-morphology and micro-structure on fly ash triboelectrostatic beneficiation

• Autorzy: Wang Wenping , Chen Yinghua , Haisheng Li , Dong Haoran , Wang Guanghui

Identyfikatory

DOI

10.37190/ppmp/128468

• Języki publikacji: EN

Abstrakty

EN

Fly ash is a complex system with a variety of fine particles. The complex relationship between unburned carbon and ash particles has an important influence on the efficiency of fly ash triboelectrostatic beneficiation. The particles adhered to the two electrode plates are collected through the triboelectrostatic beneficiation experiment. The scanning electron microscopy and X-ray fluorescence are used to detect the microscopic differences between the particles of positive and negative plates. The results show that the flaky carbon particles in the raw ash and the ash particles larger than 4µm are more easily separated, while it is converse for the ash particles with particle size less than 4µm. With the particle size less than 4µm, it is gradually more obvious for the influence of adhesion caused by the roughness surface of spherical unburned carbon particles, and the surface pores structure of porous carbon particles. The binding structure between unburned carbon and ash particles is complex and changeable. It is not beneficial to improve the separation efficiency. Therefore, the micro-structure and micro-morphology have an important effect on fly ash triboelectrostatic beneficiation. Some suggestions were proposed from the microscopic point to improve the efficiency of fly ash triboelectrostatic beneficiation.

Słowa kluczowe

EN

fly ash; triboelectrostatic beneficiation; micro-structure; micromorphology; separation efficiency

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2021
• Tom: Vol. 57, iss. 1
• Strony: 53--63
• Opis fizyczny: Bibliogr. 26 poz., fot., rys.

Twórcy

autor

Wang Wenping

• Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, China University of Mining & Technology

autor

Chen Yinghua

• Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering & Technology, China University of Mining & Technology

autor

Haisheng Li

• Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering & Technology, China University of Mining & Technology

autor

Dong Haoran

• Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering & Technology, China University of Mining & Technology

autor

Wang Guanghui

• Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering & Technology, China University of Mining & Technology

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).