Wollastonite is mainly used in ceramics, plastics, rubber, paint, coatings, metallurgy, papermaking, and other industries to produce refractory materials or as a substitute for asbestos and glass fiber. Ceramic industry The ceramic industry is the main application field of wollastonite products, which are mainly used to produce glazed tiles, art porcelain, sanitary porcelain, daily-use porcelain, electric porcelain, high-frequency and low-consumption radio porcelain, and chemical ceramics. Wollastonite has high whiteness, which can replace the mixture of SiO2 and CaO in ceramic glaze and can burn a smooth, uniform, bright white, and clear glaze. Plastic industry Wollastonite has obvious advantages in high resistance, low dielectric constant, and low oil absorption. The compatibility of the modified wollastonite with the plastic is greatly improved. After being crushed, it still maintains the needle-like crystal shape. Adding to the plastic can improve the performance of the plastic. And to ensure that the product has high thermal stability, low dielectric properties, low oil absorption, and high mechanical strength while reducing the cost of products. Rubber industry Wollastonite replaces Lithopone, some titanium dioxide, white carbon black, light calcium, clay, etc. as fillers for various types of rubber in the rubber industry, and many performance indicators of the products have been improved. Application results show that wollastonite used in light-colored rubber can replace titanium dioxide, pottery clay, and lithopone in a large amount, play a certain reinforcing role, and can improve the hiding power of the white coloring agent and play a whitening role. Coating industry Wollastonite has mainly used in polypropylene anticorrosive coatings in the coating industry. Its powdery raw material has a higher surface gloss, better waterproof erosion, and pH buffering performance. Wollastonite is used as an extender pigment in the paint to partially replace white pigments such as titanium dioxide. It can cover and increase the cost of the paint, increase the thickness of the paint film, and make the paint film plump, firm, and wear-resistant. At the same time adjust the rheological properties of the coating, such as thickening, anti-settling, and so on. Wollastonite's higher refractive index (1.62) makes it act as a flattening agent in coatings. The prepared pigments can show pure white or the formulated pigments show bright and bright colors, and the white paint can be maintained for a long time. The bright color tone and the pigment are evenly distributed along the surface. Metallurgical industry Wollastonite is a natural low-temperature melting material with inherent fluxing performance, stable composition, high purity, and basicity (SiO2/CaO) tending to be neutral. It provides an ideal for the protection of continuous casting materials for metallurgical steelmaking. The raw materials, especially the low content of Al2O3 in wollastonite, make the metallurgical mold powder made of metallurgical mold slag highly capable of adsorbing harmful impurities Al2O3 in molten steel. Paper industry Wollastonite has the characteristics of a high refractive index and high whiteness. When used as a paper filler, it can increase the opacity and whiteness of the paper. Wollastonite is used in papermaking, and the formed wollastonite-plant fiber network has a more microporous structure, which improves the ink absorption performance of the paper. At the same time, the smoothness is improved and the transparency is reduced, thus increasing the printability of the paper. sex. Wollastonite interferes with the combination of plant fibers, making it insensitive to humidity, reducing its moisture absorption and deformation, and increasing the dimensional stability of the paper. Asbestos fiber substitute Wollastonite’s needle-like properties, low expansion rate, and excellent thermal shock resistance make it an ideal substitute for short-fiber asbestos. Friction materials made of wollastonite with high friction coefficient instead of asbestos are mainly used in the fields of brake pads, valve plugs, and automobile clutches.