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HERO ID
3582682
Reference Type
Journal Article
Title
Complex Processing of Wastes Generated in Chrysotile Asbestos Production
Author(s)
Baigenzhenov, OS; Kozlov, VA; Luganov, VA; Mishra, B; Shayahmetova, RA; Aimbetova, IO
Year
2015
Is Peer Reviewed?
1
Journal
Mineral Processing and Extractive Metallurgy Review
ISSN:
0882-7508
Volume
36
Issue
4
Page Numbers
242-248
Language
English
DOI
10.1080/08827508.2014.955610
Web of Science Id
WOS:000350738700005
Abstract
A new recycling technology has been studied in this work to produce magnesium chloride from wastes generated in chrysotile asbestos production. The steps include enrichment of raw material by sizing, leaching of magnesium with hydrochloric acid, purification of solution from impurities of iron and nonferrous metals, and the production of magnesium chloride solutions. Thermodynamic analysis shows the possibility of dissolution of magnesium compounds in the waste by hydrochloric acid. Magnesium chloride solution is subjected to hydrolytic purification from iron and nickel. Enrichment has been carried out with material particle size of 0.25mm and liquid to solid ratio of 4:1 and leaching with 25% concentrated hydrochloric acid has been accomplished with a stoichiometric flow rate. Hydrolytic treatment was carried out at a pH 7.5-8.0. pH adjustment was carried out by magnesium oxide. Extraction of 92% of magnesium from serpentinite was achieved.
Keywords
magnesium chloride; enrichment; complex processing; hydrochloric acid; leaching; concentrate of heavy metals; Asbestos wastes
Tags
OPPT REs
•
OPPT_Asbestos, Part I: Chrysotile_C. Engineering
Total – title/abstract screening
Off topic
•
OPPT_Asbestos, Part I: Chrysotile_D. Exposure
Total – title/abstract screening
Off topic
•
OPPT_Asbestos, Part I: Chrysotile_E. Fate
Total – title/abstract screening
Off topic
•
OPPT_Asbestos, Part I: Chrysotile_Supplemental Search
LitSearch: Sept 2020 (Undated)
ProQuest
WoS
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