Abstract
In this paper, low- to medium-grade bentonite derived in Keerjian of Toksun county were characterized. A method combined by chemical dispersion and high-speed centrifugation was used for the purification of the bentonite. Absorption of methylene blue and X-ray diffraction analysis were used to evaluate the effect of purification methods. The result showed that the optimal slurry solid-liquid ratio, dispersant amount, sedimentation time, centrifugal speed, and time of centrifugation was 1:8, 1.2% of the bentonite mass, 24h, 2000 r/min, and 5 min, respectively. The investigation provided experimental evidence for the better development and application of bentonite in this mining area.
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