Abstract: The influence of the ratio of liquor to solid,acidity, temperature and reaction time on product quality during the producing of acid active bentonite was investigated. The optimal process conditions was summed up and some methods of improving the acid active bentonite quality was proposed. The ratio of liquor to solid from 1.3 to 1.6,acidity from 15 percent to 25 percent,temperature from 95℃ to 105℃, 4 h of response time , thus the decolourization strength can be up to about 169, the activation degree more ...