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Wet Purification for the Selective Separation of Montmorillonite from Bentonite  

김완태 (한국지질자원연구원 자원활용연구부)
채영배 (한국지질자원연구원 자원활용연구부)
정수복 (한국지질자원연구원 자원활용연구부)
임정한 (한국지질자원연구원 자원활용연구부)
Publication Information
Journal of the Mineralogical Society of Korea / v.15, no.4, 2002 , pp. 293-304 More about this Journal
Abstract
Wet purification process for the selective separation of montmorillonite from Gampo 13 and 35 bentonite ores was studied using physical processes such as ultrasonic scrubbing, decantation and centrifugation. Ultrasonic Scrubbing of Gampo 13 and 35 bentonite ores was revealed excellent result at 7 wt.% of slurry density and was almost finished within 30 minutes in the sample of Gampo 13 and 10 minutes in the sample of Gampo 35, respectively After decantation, approximately 52 wt.% from the bentonite of Gampo 13 and 64wt.% from the bentonite of Gampo 35 were recovered as purified products and the CEC was reached up to 119.4 meq/100 g and 124.5 meq/100 g, respectively. Particle separation by centrifugation showed that most of the impurity minerals such as quartz and feldspar were removed within the condition of 1,000 rpm.
Keywords
montmorillonite; ultrasonic scrubbing; decantation; centrifugation; purification;
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