What is bentonite? Bentonite is also called porphyry or bentonite rock, It expands into paste after adding water. Later, people called clay of this nature bentonite. The main mineral composition of bentonite is montmorillonite, which is 85%~90%, and a small amount of feldspar, quartz, bedite, calcite and volcanic glass.
It can be white, light green, gray white, pink and other colors when containing impurities. It can be in the form of dense block or loose soil. It feels slippery when rubbed with fingers, the small block will swell several times to dozens of times after adding water.
It will be suspended in water and paste when there is little water. Bentonite can be divided into sodium bentonite, calcium bentonite and natural bleaching earth, among which calcium bentonite includes calcium sodium base and calcium magnesium base.
What are the application fields of bentonite? Bentonite has a strong cation exchange property, which can be used to remove toxins from edible oil, purify gasoline and kerosene, and treat wastewater.
Because of its good water absorption and expansion properties, dispersion, suspension, and pulping properties, it can be used in drilling mud, flame retardant, as filler in the paper industry, and to optimize the performance of coatings, such as adhesion, hiding power, water resistance, scrub resistance, etc. Due to its good adhesion, it can also be used to replace starch for sizing of yarns in the textile industry, which can save grain, not fuzz, and not smell after sizing.
Because of its good physical and chemical properties, bentonite can be used as a binder, suspending agent, thixotropic agent, stabilizer, purifying and decolorizing agent, filler, feed, catalyst, etc. It is widely used in agriculture, light industry, cosmetics, pharmaceuticals and other fields, and is a natural mineral material with a wide range of uses.
What are the bentonite processing equipment? The commonly used bentonite processing equipment are MTW European version mill, LM vertical mill and LUM ultra-fine vertical mill. In addition, in the processing of bentonite, mixing and extrusion equipment such as wheel mill and screw extruder are often used.
In order to meet the requirements of papermaking, plastics and rubber products industries for higher fineness of bentonite, it is necessary to increase the fineness of bentonite, so as to improve the quality of products. LUM superfine vertical mill is mainly suitable for superfine range such as special fineness of about 2500 meshes.
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