Preparation of Acidified Sludge-Bentonite Granules
酸化污泥膨润土的颗粒化制备

Taking sludge as pore-forming agent, the optimized conditions for preparation and acidification of bentonite granules were investigated. The effects of calcination temperature, roasting time and sludge content on the porosity of granules were investigated to obtain porous samples with better mechanical strength, which were further treated with sulphuric acid activation. By altering acid type, acid concentration, ratio of liquid to solid, activation temperature and activation time, the acid activated bentoni...