The interlayer cation is H+, also called (active clay, natural bleached clay - acid clay);
Functions and applications of Sodium Bentonite (1) Sodium bentonite, with its advantages of good viscosity, strong air permeability and good thermal stability, is used as molding sand binder in mechanical casting industry to effectively overcome sand inclusion and casting peeling phenomenon, reduce casting rejection rate, and ensure casting accuracy and smoothness. (2) In the bored pile, sodium bentonite can be used as an ideal slurry wall protection material, with the advantages of fast slurry starting, high slurry yield, high viscosity, good lubrication, good suspension, etc., effectively protect the shaft wall, cool drilling tool, back cuttings, improve the drilling rate. (3) In oil field exploitation and drilling, sodium bentonite can be equipped with drilling mud suspension with high rheological properties and thixotropic properties. (4) Sodium bentonite can be used as a paper filler, so as to effectively enhance the brightness of paper. In addition, add bentonite particles at the pressure outlet of the paper machine. He uses charge attraction to reconnect dispersed small flocs, thus forming a uniform network of micro-flocs in the pulp, the body small and compact. Therefore, sodium bentonite can not only improve the retention and filtration properties of pulp, but also greatly improve the uniformity of paper. (5) In the metallurgical industry, bentonite is used as the binder for iron ore particles, so the size of the ore is uniform and the reduction performance is good. This is the largest use of sodium bentonite products. The main bentonite used in metallurgical pellets in steel mills is sodium bentonite (6) In the petroleum industry, sodium bentonite is used to prepare tar water emulsion. Used as filler, bleach, antistatic coating, can replace starch sizing and printing pulp. (7) In the food industry, sodium bentonite is used in the decolorization and purification of animal and vegetable oils. Clarification of wine and juice; Beer stabilizer; (8) In trenchless engineering, sodium base bentonite mud produced can be formed in the pore forming of pipeline internal density of mud cake protected pipe cut off wall, hole collapse and drill burying accidents, mud can effective lubrication pipe at the same time, the pipeline crossing, laguan back to drag has good lubrication effect, reduce the risk of material deformation damage, improve the quality of directional crossing construction.
