Effect of ultrasonic pre-treatment on coal slime flotation

• Autorzy: Lv Wenbao , Chen Jun , Min Fanfei , Hou Baohong , Liu Chunfu

Identyfikatory

DOI

10.5277/ppmp19095

• Języki publikacji: EN

Abstrakty

EN

Combined with the characteristics of flotation feed originating from China’s Panyidong Coal Preparation Plant, the ash, zeta potential, X-ray fluorescence spectroscopy and contact angle test were used to study changes in the surface properties of flotation feed under ultrasonic pre-treatment, and its effect on flotation of coal slime. Results show that Preferred pre-treatment process is ultrasonic secondary treatment, ultrasonic secondary pre-treatment can remove most of the high-ash fine mud for instance kaolinite, montmorillonite and quartz in the coal slurry, reduce the surface electronegativity of coal particles, and increase the contact angle of coal particles. Thus, the concentrate ash content decreases to 13%, the recovery rate, yield of flotation concentrate and combustible matter recovery reach 92.6%, 90.9% and 97.6%, respectively.

Słowa kluczowe

EN

ultrasonic pretreatment; surface property; high-ash fine mud; flotation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2020
• Tom: Vol. 56, iss. 1
• Strony: 173--183
• Opis fizyczny: Bibliogr. 43 poz., rys., tab.

Twórcy

autor

Lv Wenbao

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

autor

Chen Jun

• State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Mines, Huainan 232001, China
• Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
• Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, Xuzhou 221116, China

autor

Min Fanfei

• Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

autor

Hou Baohong

• Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

autor

Liu Chunfu

• Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

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 (2020).