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Silicon dioxide application

Silicon dioxide application

Silicon dioxide application

Source:
2014/05/24 02:05
Silica is used for manufacturing flat glass, glass products, foundry sand, glass fiber, ceramic glaze, rust sandblasting, sand filter, flux, refractory material and manufacturing lightweight foam concrete. Silica is widely used. Relatively scarce crystals in nature can be used to create important parts of the electronics industry, optical instruments and crafts. Silica is an important raw material for the manufacture of optical fibers. Generally pure quartz, can be used to make quartz glass. Quartz glass expansion coefficient is very small, equivalent to ordinary glass 1/18, can withstand the temperature of the upheaval, acid resistance (in addition to HF), therefore, quartz glass used to manufacture high temperature resistant chemical instrument. Quartz sand used for glass raw materials and building materials.
 
 
Silica is an important part of the manufacture of glass, quartz glass, water glass, optical fiber, electronic industry, optical instruments, arts and crafts and raw materials, is an important material for scientific research.
 
 
When perfect crystalline silica is the crystal; silica gel after dehydration is agate; solidification colloidal silica water after a opal; silica grain is less than a few microns, on the formation of chalcedony, chert, secondary quartzite. The mineral resources, which are very stable in physical and chemical properties, belong to three - Party - system oxide minerals, i.e., low - temperature quartz (- quartz), which is one of the most widely distributed mineral species. The generalized quartz also includes high temperature quartz (beta quartz). Quartz block, also known as silica, mainly raw materials for production of quartz sand (sand), and silica refractory materials and ferrosilicon firing of raw materials.
 
 
The food industry is used as anti knot agent, anti foaming agent, thickening agent, filter aid and clarifying agent. Our country "food additive use health standards" (gb2760-2011) provides: can be used for egg powder, powdered sugar, milk powder, cocoa powder, cocoa butter, vegetable powder, instant coffee, soup powder, maximum usage is 15g / kg, flavor powder, maximum usage is 80g / kg; solid beverage, maximum usage was 0.2g/kg; grain, 1.2g/kg