Barite for filler industry. In the paint industry, barite powder filler can increase paint film thickness, strength and durability. Zinc-barium white pigments are also used to make white paints, and indoor use has more advantages than lead white and magnesium white. Barite for the paint industry requires sufficient fineness and high whiteness. The paper industry, rubber and plastics industry also uses barite as a filler, which improves the hardness, abrasion resistance and aging resistance of rubber and plastics. Barite fillers for rubber and papermaking generally require BaSO 4 to be greater than 98% and CaO to be less than 0.36%. Magnesium oxide, lead and other components are not allowed.

Barite is chemically stable, insoluble in water and hydrochloric acid, and non-magnetic and toxic. Barite crystals belong to orthorhombic (orthorhombic) sulphate minerals. Often thick plate-like or columnar crystals, mostly dense block or plate-like, granular aggregates. When pure, it is colorless and transparent. When it contains impurities, it is dyed into various colors. The streaks are white. The glass is shiny and transparent to translucent. The three groups are completely cleaved, and the included angle is equal to or close to 90 °. Mohs hardness is 3-3.5, specific gravity is 4.0-4.6. Identification characteristics: plate-like crystals, small hardness, complete cleavage near the right-angle intersection, high density, no foaming in the presence of hydrochloric acid, and distinguish it from similar calcite. Barite is a non-metallic mineral product with barium sulfate (BaSO4) as the main component. Pure barite is white and shiny. It is usually gray, light red, light yellow, etc. due to the influence of impurities and mixtures. Crystallization Fairly good barite can also appear as transparent crystals.