Dispersion and control-selective desliming method in bauxite
A reverse flotation and bauxite technology, applied in flotation, solid separation, etc., can solve the problems of slow flotation speed of fine-grained aluminosilicate minerals, reduced collector selectivity, long reverse flotation time, etc. , to achieve the effect of saving flotation equipment, significant economic and social benefits, and shortened flotation time
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[0012] 1. Use Henan bauxite with an aluminum-silicon ratio A / S of 5.67. The main mineral is diaspore, with a content of about 53.4% to 53.8%. Followed by pyrophyllite (content is about 14.7% ~ 17.4%), illite (content is about 16.5% ~ 15.8%), a small amount of clinochlorite (content is about 9.3% ~ 12.6%), a small amount of kaolinite ( The content is about 3% to 3.5%). The continuous separation process system is as follows: the particle size of the grinding product is -0.074mm, accounting for about 86%, the amount of dispersant sodium carbonate is 3800g / t; The concentration is 35%; the pH of the flotation system is controlled at around pH 6, and reverse flotation is carried out with alkyl halide quaternary ammonium salts as collectors. Controlled dispersion-selective desliming operation to get the aluminum-silicon ratio of 1.70 ore sludge as tailings discharge, after desliming, the aluminum-silicon ratio of sand settling is 7.20 (1.53 higher than the raw ore aluminum-silicon...
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