Dissolution kinetics of malachite in ethylene diamine phosphate solutions

• Autorzy: Shen Peilun , Liu Ruizeng , Liu Dianwen , Zhan Xiaolin , Jia Xiaodong , Song Kaiwei

Identyfikatory

DOI

10.5277/ppmp19026

• Języki publikacji: EN

Abstrakty

EN

Ethylene diamine phosphate (EDP), as a synthetic organic reagent, was used for the first time to leach malachite, and a new method of using organic amine to leach copper oxide ore was developed. The effects of stirring speed, particle size, reagent concentration, and reaction temperature on EDP-dissolution malachite were investigated. Results showed that malachite rapidly dissolved in EDP solution. The malachite-dissolving rate also increased with increased reagent concentration, increased reaction temperature, and decreased particle size. Stirring speed exhibited nearly no effect on EDP-induced malachite dissolution. The leaching kinetics was found to follow the shrinking-core model, and dissolution was controlled by surface chemical reaction with an activation energy of 52.63kJ×mol⁻¹. A semiempirical rate equation was obtained to describe the dissolution process expressed as 1-(1-X_Cu)^1/3=0.0149(C_EDP)^0.7814 × (P_malachite)^−0.7982×exp(−6.3308/T) ×t.

Słowa kluczowe

EN

malachite; organic amine; ethylene diamine phosphate; dissolution; kinetic

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2019
• Tom: Vol. 55, iss. 4
• Strony: 1039--1048
• Opis fizyczny: Bibliogr. 34 poz., rys., tab., wz.

Twórcy

autor

Shen Peilun

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China
• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China

autor

Liu Ruizeng

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China
• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China

autor

Liu Dianwen

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China
• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China

autor

Zhan Xiaolin

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China
• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China

autor

Jia Xiaodong

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China
• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China

autor

Song Kaiwei

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China
• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR 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).