Arsenic removal through the decrepitation of colemanite ores

Despite their high boron contents, some boron deposits in Türkiye contain considerable amountS of arsenic. Arsenic in boron minerals receives penalty in marketing and thus its removal is necessary. Since colemanite undergoes decrepitation at temperatures near its decomposition, the objective of this...

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Bibliographic Details
Published in:Powder technology 1999-07, Vol.103 (3), p.260-264
Main Authors: Arslan, Fatma, Arslan, Cüneyt, Çelik, Mehmet S
Format: Article
Language:English
Subjects:
Arsenic
Beneficiation
Boron minerals
Calcination
Chemistry
Colemanite
Decrepitation
Exact sciences and technology
Inorganic chemistry and origins of life
Kinetics and mechanism of reactions
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Summary:Despite their high boron contents, some boron deposits in Türkiye contain considerable amountS of arsenic. Arsenic in boron minerals receives penalty in marketing and thus its removal is necessary. Since colemanite undergoes decrepitation at temperatures near its decomposition, the objective of this study was to determine the extent of arsenic removal through the decrepitation of colemanite ores with high As content. The effect of temperature, retention time, and particle size range was investigated and the degree of arsenic removal and the quality of colemanite concentrate were quantified. The results reveal that arsenic removals of 95–98% with As levels as low as 0.02% in the colemanite concentrate are achieved.
ISSN:0032-5910
1873-328X
DOI:10.1016/S0032-5910(99)00020-0