In industry, bentonite is mainly used as thickener and anti-settling agent for coatings and inks. (1) Using bentonite as a binder to make iron pellets, which can be directly put into blast furnace smelting instead of sintering, which can save flux and coke by 10% to 15% each, and Chemicalbook can improve blast furnace production capacity by 40% to 50%. (2) The drilling mud prepared with sodium bentonite has high mud making rate and many other advantages, and is suitable for oil drilling, high pressure jet well, small diameter drilling and unstable formation drilling.