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BENEFICIATION OF ATTAPULGITE – MONTMORILLONITE CLAYSTONE BY DISPERSION SEDIMENTATION | ||
| Iraqi Bulletin of Geology and Mining | ||
| Article 1, Volume 4, Issue 1, 2008, Pages 117-124 | ||
| Authors | ||
| ; a M.Kh. Mustafa; Sahar N. Abdullah; Abdul Wahab A. Al-Ajeel | ||
| Abstract | ||
| The beneficiation of attapulgite – montmorillonite claystone has been studied with dispersion sedimentation technique using polyionic salts as dispersant. The study was performed on attapulgite-rich claystone sample from the Digma Formation ¬exposed in the Western Desert of Iraq. The clayey materials mainly consist of attapulgite and montmorillonite minerals, together with quartz, calcite, dolomite and gypsum as impurities. Calcite represents the major impurity associated with the clay. Type and dosage of dispersant (namely sodium hexametaphosphate, and tetrasodium pyrophosphate) and slurry solid concentration were tested to understand their effect on the beneficiated process. The results showed that tetrasodium pyrophosphate was the best for achieving good beneficiation of attapulgite clay from dilute crude slurry. | ||
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