Manufacturers supply high-quality silica

Silica, also known as silica. It is widely distributed in nature, such as quartz, quartz sand. White or colorless, high iron content is pale yellow. A density of 2.2 to 2.66, melting point 1670 ℃ (tridymite), 1710 ℃ (cristobalite), boiling point 2230 ℃, a relative dielectric constant of 3.9. Insoluble in water slightly soluble in common acid, but soluble in hydrofluoric acid and in hot concentrated phosphoric acid and molten alkali can work. Used in making glass, water glass, pottery, ceramics, refractories, ferrosilicon, sand, elemental silicon. Silica is an important component of the manufacture of glass, quartz glass, water glass, fiber optics, electronics industry, optical instruments, crafts and refractory materials, is an important material for scientific research. When the time is perfect crystalline silica crystal; after dehydration is agate gelled silica; colloidal silica water after solidification become opal; silica grains at less than a few microns, on the formation of chalcedony, flint, secondary quartzite. Physical and chemical properties are very stable mineral resources, mineral crystal metal oxide trigonal system, that is, low temperature quartz (a- quartz), quartz group minerals most widely distributed of a mineral species. Generalized quartz also include high temperature quartz (b- quartz). Quartz block, also known as silica, mainly the production of quartz sand (also known as silica sand) of raw materials, but also quartz refractories and firing ferrosilicon raw materials. The main raw material of glass and glass lettering [1] flat glass, float glass, glass products (glass jars, glass bottles, etc.), optical glass, glass fibers, glass equipment, conductive glass, glass cloth and anti-rays specialty glass and the like. Special Features: glass lettering: first coated with a layer of paraffin on the glass, and then engraved sharp word, then hydrofluoric acid in the lettering of wax applied again, wait for a while to show up writing. Principle: hydrofluoric acid silica. Ceramics and refractory materials billet and glaze porcelain, with a high silica brick kiln, ordinary brick and silicon carbide and the like. Metallurgical silicon metal, silicon and silicon alloy aluminum and other raw materials or additives, flux. Construction concrete, cementitious material, road building materials, artificial marble, cement physical properties of test materials (ie cement standard sand), etc. Chemical silicon compound and water glass and other raw materials, sulfuric acid tower filler, amorphous silica can be used as an adsorbent. The main raw material mechanical foundry sand, abrasive material (sand, hard abrasive paper, sandpaper, emery cloth, etc.). Electronic high-purity silicon metal, optical fiber communication.