Kinetic Study on the Preparation of Aluminum Fluoride Based on Fluosilicic Acid

• Autorzy: Chen Gaoxiang , Yang Xingdong , Qu Jiyan , Luo Jianhong , Zhang Zhiye , Sun Lan

Identyfikatory

DOI

10.2478/pjct-2021-0024

• Języki publikacji: EN

Abstrakty

EN

Reasonable mathematical derivation and mechanism model in the process of producing aluminum fluoride by fluosilicic acid is the key to the industrial treatment of fluorine resources in the tail gas of phosphate ore. In this work, aluminum fluoride was generated directly by fluosilicic acid to extract fl uorine from the tail gas of phosphate rock. The uncreated-core model dominated by interfacial reaction and the uncreated-core model dominated by internal diffusion-reaction were then respectively utilized to describe the reaction kinetics of the generation of aluminum fluoride. The result showed that the uncreated-core model was dominated by interface reaction and internal diffusion, the apparent reaction order n = 1, and the activation energy E_a = 30.8632 kJ . mol^–1. Product characterization and kinetic analysis were employed to deduce the reaction mechanism of preparing aluminum fluoride. The theoretical basis for the low-cost recycling of fluorine resources in the tail gas of industrial phosphate ore was provided in this work.

Słowa kluczowe

EN

kinetic study; fluosilicic acid; aluminum fluoride; uncreated-core model

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2021
• Tom: Vol. 23, nr 3
• Strony: 10--16
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

Chen Gaoxiang

• Department of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China

autor

Yang Xingdong

• Department of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China

autor

Qu Jiyan

• Department of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China

autor

Luo Jianhong

• Department of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China

autor

Zhang Zhiye

• Department of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China

autor

Sun Lan

• Department of Mechanical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. 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 (2021).