Mechanism of micro/nano-bubble formation and cavitation effect on bubbles size distribution in flotation

• Autorzy: Deng Xiaowei , Lv Bo , Cheng Gan , Lu Yang

Identyfikatory

DOI

10.37190/ppmp/119883

• Języki publikacji: EN

Abstrakty

EN

In this study, micro/nano-bubble generated by cavitation effect as a promoting factor for flotation was investigated using the atomic force microscope (AFM). Hydrodynamic cavitation tests were performed with a venturi bubble generator. Additionally, bubble size distribution (BSD) under the hydrodynamic cavitation effect was also studied at different water flow speed conditions. Dozens of nanometers height bubbles attached to the hydrophobic substrates were detected. Besides, the cavitation cloud grew thicker with the flow velocity increasing from 26.52 m/sec to 53.04 m/sec, near the venturi tube nozzle. All results showed the importance of the cavitation effect on the micro/nano-bubbles formation and the BSD in flotation.

Słowa kluczowe

EN

microbubbles; nanobubbles; cavitation effect; bubble size distribution; flotation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2020
• Tom: Vol. 56, iss. 3
• Strony: 504--512
• Opis fizyczny: Bibliogr. 42 poz., rys., wykr., wz.

Twórcy

autor

Deng Xiaowei

• College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
• Coal Production Safety Collaborative Innovation Center in Henan Province, Henan Polytechnic University, Jiaozuo 454000, China

autor

Lv Bo

• College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China

autor

Cheng Gan

• College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China

autor

Lu Yang

• College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China

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Uwagi

This work is financed by National Natural Science Foundation of China (51904096). Science and Technology Project of Henan Province (172102310641).