Improving the Precipitation of Arsenic Trisulfide from Washing Waters of Sulfuric-Acid Production of Copper Smelteries / Mamyachenkov S. V.,Anisimova O. S.,Kostina D. A. // RUSSIAN JOURNAL OF NON-FERROUS METALS. - 2017. - V. 58, l. 3. - P. 212-217.

ISSN/EISSN:

1067-8212 / 1934-970X

Type:

Article

Abstract:

Disadvantages of the sulfide method of purifying washing waters of the sulfuric-acid production are the formation of finely dispersed (particle size from 0.3 to 1.5 mu m) difficult-to-filter precipitates of arsenic(III) sulfide and the danger of isolation of hydrogen sulfide into the atmosphere upon an overdose of sodium hydrosulfide. The coagulation of sols of arsenic sulfide is investigated in order to develop more efficient and rapid filtration technology of the precipitate. The filtration rate in various supply modes of sodium hydrosulfide and the dependence of settling rate and filtration on the presence of coagulants such as iron sulfate and aluminum sulfate are determined. It is established that the implementation of the distributed supply of sodium hydrosulfide during the precipitation of arsenic sulfide in combination with the application of such inorganic coagulant as iron(III) sulfate will make it possible to increase the particle size of the As2S3 phase by a factor of several times and increase the filtration and settling rates of pulps.

Author keywords:

arsenic sulfate; coagulation; filtering rate; iron sulfate; aluminum sulfate SULFIDE PRECIPITATION; REMOVAL

DOI:

10.3103/S1067821217030130

Web of Science ID:

ISI:000405702300005

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAY
Publisher	ALLERTON PRESS INC
Address	18 WEST 27TH ST, NEW YORK, NY 10001 USA
Language	English
EISSN	1934-970X
Keywords-Plus	SULFIDE PRECIPITATION; REMOVAL
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	svmamyachenkov@yandex.ru osanis@mail.ru dar.kostina@yandex.ru
Number-of-Cited-References	22
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	1
Journal-ISO	Russ. J. Non-Ferrous Metals
Doc-Delivery-Number	FA8NI