Quartz sand is mainly composed of SiO2, an oxide mineral of trigonal crystal system. Its physical and chemical properties are very stable. Its appearance is white, milky white or off-white.-quartz is one of the most widely distributed minerals of the quartz group.Quartz sand often contains a small amount of impurities such as A1203, CaO, MgO and so on.Quartz sand is an important industrial mineral raw material, widely used in glass industry, casting industry, ceramics and refractory materials, filler, metallurgy, construction, chemical industry, plastic, rubber, abrasives and the production of metal silicon, organic silicon compounds and other industries.
1. Glass and glass products industry
Quartz sand is the main raw material of glass industry.The chemical composition, particle size and stability of quartz sand have a decisive influence on its application.Glass: flat glass, float glass, glass products (glass cans, glass bottles, glass tubes, etc.), optical glass, glass fiber, glass instruments, conductive glass, glass cloth and anti-ray special glass and other main raw materials.
2. Machinery industry
The main index of foundry quartz sand is SiO2 content.SiO2 content of cast steel, cast iron and non-ferrous alloy should be greater than 97%, 85% and 75% respectively.Another important indicator of what is used for casting is the content of mud.In addition, the important parameters affecting the application of quartz sand also include: particle size, average fineness, particle shape and so on.
Electronics industry
As one of the important raw materials in the electronic industry, quartz is widely used to manufacture high-purity metallic silicon, silica powder, optical fiber and other industries.
4. Metallurgical industry
Quartz as an auxiliary material in metallurgical industry, mainly as smelting additive, solvent, silicon metal, ferrosilicon alloy.
5. Refractory materials
Raw materials for porcelain blank and glaze, high silicon brick, common silicon brick and silicon carbide for kiln.
Cement industry
Concrete, aerated concrete, cementing materials, road building materials, artificial marble, cement physical performance test materials (namely cement standard sand), etc.
Chemical industry
Used for making raw materials of sodium silicate and anhydrous silicate, silicon compounds and sodium silicate, fillers for sulfuric acid tower, amorphous silica powder.
Other 8.
Quartz can also be used as rubber, plastic filler;Fillers for anticorrosion and wear resistance coatings and road marking coatings;Oil drilling (fracturing sand);Pure water or sewage filtration material.
