Investigation into the kinetic regularities of impurity transfer during the sulfuric acid leaching of the zinc-containing middlings of two-stage Waelz process of zinc cakes: Part II. regularities of sulfuric acid leaching the industrial samples of calcined Waelz oxide of zinc production / Pan'shin A. M.,Mamyachenkov S. V.,Anisimova O. S.,Kulenova N. A. // RUSSIAN JOURNAL OF NON-FERROUS METALS. - 2015. - V. 56, l. 4. - P. 377-380.

ISSN/EISSN:

1067-8212 / 1934-970X

Type:

Article

Abstract:

Kinetic regularities of leaching the actual industrial sample of calcined Waelz oxide of zinc production are determined. The basic reaction mechanism is established. The dissolution of solid-phase particles can be conditionally differentiated into two stages. In the initial instant, the reaction is developed in the external diffusion mode following the topochemical mechanism. The process mechanism changes at the second leaching stage, which is evidenced by the limiting character of the time dependence of recovery of zinc, which is caused by the formation of dissolving parts of reaction products forming the poorly permeable films on the surface. The internal diffusion is the limiting stage in this case.

Author keywords:

leaching; dissolution mechanism; reaction products; diffusion control CUPRIC OXIDE; DISSOLUTION; MECHANISM

DOI:

10.3103/S1067821215040173

Web of Science ID:

ISI:000360701000003

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUL
Publisher	ALLERTON PRESS INC
Address	18 WEST 27TH ST, NEW YORK, NY 10001 USA
Language	English
EISSN	1934-970X
Keywords-Plus	CUPRIC OXIDE; DISSOLUTION; MECHANISM
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	svmamyachenkov@yandex.ru osanis@mail.ru NKulenova@ektu.kz
Number-of-Cited-References	13
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	7
Journal-ISO	Russ. J. Non-Ferrous Metals
Doc-Delivery-Number	CQ6FX