Analysis of bubble parameters in a fluidized flotation column with steel ball particles

• Autorzy: Shi Yingxiang , Wei Zhongkuan , Xu Huilin , Wu Fan , Gao Hang , Ping An

Identyfikatory

DOI

10.37190/ppmp/195880

• Języki publikacji: EN

Abstrakty

EN

Examining the properties of bubble parameters within a three-phase system is crucial for enhancing and optimizing fluidized bed flotation column cells. This research focuses on the variations in primary bubble parameters within such columns, with the goal of offering a theoretical foundation for the advancement of fluidized bed flotation technology. The experiment utilized steel balls, tap water, and compressed air as the solid, liquid, and gas phases, respectively. Bubble parameters were measured directly using an electrical conductivity probe. Key factors influencing bubble size in the fluidized bed flotation column included the initial static bed height(H*), superficial liquid velocity (UL), superficial gas velocity (UG), and reagent concentration. The study assessed how bubble size and gas holdup are distributed in the fluidization zone and identified how bubble parameters vary with different operating conditions. Findings show that incorporating steel ball particles in the fluidization zone significantly improves bubble stability, reduces the variability of bubble size, and ensures a more consistent bubble distribution. Proper selection of filling particles and accurate bed height adjustment can notably enhance the local gas holdup within the bed. Additionally, it has been found that local gas holdup increases rapidly when the liquid-to-gas velocity ratio drops below a certain threshold.

Słowa kluczowe

EN

bubble parameters; fluidized bed; flotation column cell

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2024
• Tom: Vol. 60, iss. 6
• Strony: art. no. 195880
• Opis fizyczny: Bibliogr. 30 poz., rys., tab., wykr.

Twórcy

autor

Shi Yingxiang

• China Coal Tianjin Design Engineering Co., Ltd., Tianjin 300120, China

autor

Wei Zhongkuan

• China Coal Tianjin Design Engineering Co., Ltd., Tianjin 300120, China
• School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu 221112, China

autor

Xu Huilin

• China Coal Tianjin Design Engineering Co., Ltd., Tianjin 300120, China

autor

Wu Fan

• China Coal Tianjin Design Engineering Co., Ltd., Tianjin 300120, China

autor

Gao Hang

• China Coal Tianjin Design Engineering Co., Ltd., Tianjin 300120, China

autor

Ping An

• China Coal Tianjin Design Engineering Co., Ltd., Tianjin 300120, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).