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Physicochemical targets of ultrafine calcined kaolin

time:2021/5/19 9:42:19    Views:

Kaolin is a kind of nonmetallic mineral deposit, which is a kind of clay and claystone mainly composed of kaolinite clay mineral deposit. Because it is white and delicate, it is also called dolomite. It was named after Gaoling Village, Jingdezhen, Jiangxi Province.


The kaolinite deposits are composed of kaolinite cluster deposits, such as kaolinite, dikakite, pearl stone and haloite, and the main mineral composition is kaolinite.


Its pure kaolin is white and delicate, soft soil, with good plasticity and fire resistance and other physical and chemical properties, plasticity, wet soil can be molded into a variety of shapes without breaking, and can remain unchanged for a long time. Its mineral composition is mainly composed of kaolinite, elloite, hydromica, illite, montmorillonite, quartz, feldspar and other minerals. Kaolin is very extensive use, it is mainly used for paper making, ceramics and refractory materials, secondly used in paints, rubber filler, enamel glaze and white cement raw material, a small amount of used in plastics, paint, paint, grinding wheel, pencil, daily cosmetics, his rain-water, pesticide, medicine, textile, oil, chemical, building materials, national defense and other industries.


Ultra fine calcined kaolin is an important industrial non-metallic mineral deposit, whose scientific name is aluminum silicate (aluminosilicate clay deposit), and its chemical composition is Al2O3 2SiO2 2H2O. It is a light gray, fine, flaky powder with a triclinic crystal shape and a quasi-hexagonal configuration. Specific gravity is 2.8, hardness is Mohs 1.0, refractive index is 1.56. It is a slightly acidic mineral deposit, but still has good acid and alkalinity resistance. In addition to the characteristics of general mineral powder, it has obvious isolation effect on infrared ray, but it is easy to absorb moisture, and should be dried before use.


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