Investigation of leaching kinetics of cerussite in sodium hydroxide solutions

• Autorzy: Feng Q. , Wen S. , Wang Y. , Zhao W. , Deng J.

Identyfikatory

DOI

10.5277/ppmp150210

• Języki publikacji: EN

Abstrakty

EN

The leaching kinetics of cerussite in alkaline medium was investigated with respect to experimental variables such as sodium hydroxide concentration, temperature, particle size and stirring speed. The results showed that leaching reagent concentration and reaction temperature exerted significant effects on the extraction of lead, whereas particle size and stirring speed exhibited a relatively moderate effect on the leaching rate. The leaching process followed the kinetic law of the shrinking core model, and the dissolution rates were controlled by the surface chemical reaction with an apparent activation energy value of 43.79 kJ/mol. A corresponding dissolution kinetic equation was also proposed to describe the dissolution reaction. The results indicated that sodium hydroxide could be used as an effective leaching reagent for extracting lead from cerussite.

Słowa kluczowe

EN

cerussite; sodium hydroxide; leaching; kinetics; activation energy

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2015
• Tom: Vol. 51, iss. 2
• Strony: 491--500
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Feng Q.

• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China

autor

Wen S.

• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China

autor

Wang Y.

• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China

autor

Zhao W.

• Kunming Metallurgical Research Institute, Kunming 650031, China

autor

Deng J.

• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China

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