Silica is an important chemical raw material, mainly used in the production of refractory bricks, monocrystalline silicon, cement, etc., has an important position in the industry. At present, many countries in the world have silica mines, most of the silica mines have high purity high ore content. The cement ceramics that we see in our daily lives may contain silica. So although silica sounds strange, it is actually closely related to our lives. So what are the specific properties uses of silica? Let's take a look at the specific situation of silica. Talc Factory
Silica is the general term for vein quartz, quartzite, quartz sandstone, with the chemical formula SiO2. The chemical properties are very stable. It is insoluble in water does react with water. It does work with common acids. It can react with hydrogen fluoride gas hydrofluoric acid to generate silicon tetrafluoride gas. Silica is widely used as a raw material for building materials an important raw material for the inorganic salt industry. Using chemical methods, silica can be processed into a series of silicon compounds. Silica generally refers to natural quartz sand with high purity, namely silica, which is widely distributed in nature has large reserves. Many countries have large-scale high-quality mines with large amounts of mining.
Mainly used in acid refractory bricks for metallurgical industry. Pure silica can be used as quartz glass refined single crystal silicon. In the chemical industry, it is used to prepare silicon compounds silicates, can also be used as a filler for sulfuric acid towers. Used in glass, ceramics, Portland cement, etc. in building materials industry.
The hardness of silica is about 7, it is generally necessary to crush the silica, so people often ask about the hardness of the silica. In fact, the crushing ability of the stone depends on the compressive strength of the stone. Generally, the compressive strength of silica is 200~300Mpa. According to different regions, the compressive strength of silica of different purity is slightly different.
Uses of silica:
Sodium silicate silicon dioxide are the main products obtained the chemical processing of silica. Sodium silicate is a widely used product with a large amount of silica chemical processing products. In addition to being used to manufacture a variety of silicon compounds, it is also widely used as a binder for cardboard, plywood, some metal materials foundry industry, soap, detergent It is used as an additive for paper, as a performance modifier for paper, used as a scouring bleaching aid for cotton cloth, a fireproof treatment agent for fabrics, a color developer for dyes in the textile industry. In addition, it is also used as cement coagulant, wood preservative egg fresh-keeping agent. Sodium silicate can also be used as interior exterior wall coatings after modification. Aluminum silicate can be used as a raw material for glass ceramics, also as a paint pigment. Lithium silicate can be used as anticorrosive paint metal surface protective agent.
Specific uses of silica powder:
The main raw materials for flat glass, float glass, glass products (glass jars, glass bottles, glass tubes, etc.), optical glass, glass fibers, glass instruments, conductive glass, glass cloth special radiation-proof glass, etc.
2. Ceramics refractory materials
Porcelain blanks glazes, high-silicon bricks for kilns, ordinary silicon bricks, silicon carbide, etc.
Raw materials additives fluxes for silicon metal, ferrosilicon alloy silicon aluminum alloy
Building materials such as concrete, cementitious materials, road construction materials, artificial marble, cement physical performance inspection materials (ie cement standard sand).
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