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Selective flocculation of celestite from celestite-calcite fines

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Title Selective flocculation of celestite from celestite-calcite fines
 
Creator Ozkan, A
Ucbeyiay, H
 
Subject Celestite
Calcite
Selective flocculation
Sodium dodecyl sulphate
Sodium silicate
 
Description 383-387
In this study, selective hydrophobic flocculation of celestite with sodium dodecyl sulphate (SDS) from the mixtures of celestite and calcite was investigated using sodium silicate as inorganic dispersant. Prior to the selective flocculation process, the critical surface tension of wetting (c) values of these minerals were determined as a function of SDS concentration. A significant difference between the c values of celestite and calcite was found at concentrations around 20 mg/dm³, indicating that celestite particles can be selectively flocculated from the mixtures at these concentrations. Then, the effects of pH, dispersant concentration, flocculation and settling times on the selective flocculation of celestite mineral were studied. Experiments carried out with sodium silicate at optimum conditions yielded a concentrate, which is flocculated material, assaying 85% SrSO₄ with a recovery 90% and separation index of 0.90 from a mixture containing 50% SrSO₄.
 
Date 2009-01-20T04:43:30Z
2009-01-20T04:43:30Z
2008-07
 
Type Article
 
Identifier 0971–457X
http://hdl.handle.net/123456789/2814
 
Language en_US
 
Publisher CSIR
 
Source IJCT Vol.15(4) [July 2008]