Silicon dioxide is also known as silica, natural diatomite is amorphous silicon dioxide, is the lower aquatic plant diatom remains, for white solid or powdery, porous, light, soft solid, strong adsorption. In the food industry mainly used to prevent the agglomeration of powder food, in order to maintain free flow of a class of food additives or used to absorb liquid flavor, oil, vitamins, etc., so that it becomes powder, such as powder oil, solid flavor and solid wine products.
|Heating loss(105°C 1.5h) %||4.0~8.0|
|ignition Loss 1000°C(Dry Basis) %||3.0~7.0|
|DBP (Oil absorption value) cm3/g||2.00~2.80|
|PH value(5% Aqueous Suspension)||5.0~8.0|
|SiO2(Dry Basis) %||≥93|
|BET Specific Surface Area m2/g||105~135|
|Salt As Na2SO4 % m2/g||<1.5|
|Storage||in the shade|
Glass and glass lettering
Main raw materials of plate glass, float glass, glass products (glass cans, glass bottles, etc.), optical glass, glass fiber, glass instruments, conductive glass, glass cloth and special ray proof glass, etc.
Special purpose: Glass lettering: A layer of paraffin wax is applied to the glass bottles, then the lettering is engraved with a sharp instrument, and then the paraffin wax is applied with hydrofluoric acid. Just wait a moment for the writing to appear. Principle: Hydrofluoric acid corrodes silica.
Ceramics and refractories
Blank and glaze for porcelain, raw materials of high silicon brick, common silicon brick and silicon carbide for kiln.
Raw materials or additives, fluxes, etc. of silicon metals, ferrosilicon alloys, and silicon aluminum alloys.
Concrete, cementitious material, road building material, artificial marble, cement physical properties test material (namely cement standard sand).
Raw materials such as silicon compounds and sodium silicate, fillers for sulfuric acid towers, amorphous silica can be used as an adsorbent.
The main raw materials of foundry sand, abrasive materials (abrasive blasting, hard abrasive paper, sandpaper, emery cloth, etc.
Rubber and plastics
The wear resistance of rubber can be improved by adding silica to the rubber.
It can not only reduce the rolling resistance of the tire, but also improve the wear resistance and wet skid resistance of the tire.
The tensile strength, tear strength and wear resistance of silica gel have been improved.
Fillers (can improve the weather resistance of the paint), can be used to produce matting agent, can also be used as a paint thickener.
Food and medicine
In the food industry mainly used to prevent the agglomeration of powder food, in order to maintain free flow of a class of food additives or used to absorb liquid flavor, oil, vitamins, etc., so that it becomes powder, such as powder oil, solid flavor and solid wine products. (Example: milk powder)
It can be used as flow aid, catalyst carrier and so on in drug production