Silicon Dioxide Classification fumed

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1.fumed silica
2.China manufacturer
3.Production capacity 3000 ton per month
4.Third party inspection certificate

Silicon Dioxide Classification fumed silica


  • Microsilica can be used in a variety of cementation products, such as concrete, grouts, and mortars as well as elastomeric, polymer, refractory, ceramic and rubber applications.

  • We collect micro silica from our own 16 ferro silicon furnaces. Monthly we collect approx. 2000 MT micro silica with Sio2 85-94%

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Q:Why is silica in food?
The utility model can solve the agglomerate formed by moisture absorption and compression, and has the adsorption function, and is an excellent flow enhancer. For eggs, milk powder, cocoa powder, powdered sugar, vegetable powder, powder, Instant Coffee
Q:Silica gel and what reacts to produce silica?
As can be seen from the molecular formula, the silica gel is actually hydrated silica. Under intense heat, the reaction has a decomposition reaction to produce water and silica. This reaction equation
Q:Why is active silica the harmful component of aggregate?
Silica widely exists in nature and forms rocks with other minerals. Naturally occurring silica, also called silica, is a hard, refractory solid.Quartz is also the main component of silica, transparent quartz crystal, that is, we often say crystal.
Q:What is the function of silica as a food additive? Is it harmful to the human body?
Silica is a naturally occurring mineral, and many vitamin supplements sold in the market contain this mineral. In general, silica is used as an anti caking agent and, if ingested in combination with a normal balanced diet, helps to restore joint and cartilage damage, such as arthritis. In addition, it also benefits the blood vessel wall. Excessive consumption of silica can lead to side effects, just like excessive consumption of multivitamins. However, as an anti caking agent, the amount of silica used is very small. Therefore, silica as an anti caking agent does not cause side effects.
Q:Does anyone press the glass on the front of the glass? Is it easy to install?
The flux is generally containing sodium oxide, potassium oxide, lead oxide, calcium oxide, barium oxide and other materials, such as limestone, feldspar, sodium carbonate, boric acid, lead compounds, barium compounds. (sodium oxide can reduce the viscosity of glass forming, the glass is easy to melt, plays a good role in flux; barium oxide in glass the formation plays a basic role with sodium oxide; tin oxide can increase the glass chemical stability and mechanical strength; lead oxide can increase density, improve hunting, with special luster; lead can make a glass of light refraction and scattering rate of small glass makes more lustrous and stable.
Q:How does silica naturally form?
Silica also called silica, chemical formula SiO. There are two kinds of crystalline silica and amorphous silica in nature. Crystalline silica is divided into three kinds: quartz, scale quartz and square quartz because of their different crystal structures.
Q:Can hydrofluoric acid be heated to 150 degrees to remove silica?
The treatment of silicon dioxide with hydrofluoric acid is usually carried out in platinum dry pans (or platinum dishes), and the elevated temperature can evaporate the four fluorinated silicon as soon as possible and accelerate the reaction speed. In order to remove all silica, it is usually added excessive hydrofluoric acid, plus a few drops of sulfuric acid (1+1), to be heated in a water bath or a low temperature hotplate. The first is water and four volatile silicon tetrafluoride gas heated to run, finally, sulfuric acid starts to decompose, three sulfur dioxide white smoke cigarettes, until no three sulfur dioxide white smoke, can stop heating, the silica have all become four silicon tetrafluoride gas to volatilize, thoroughly remove the silica.
Q:What is the hardness of SiO2?
Silica also called silica, chemical formula SiO. There are two kinds of crystalline silica and amorphous silica in nature.The main component of sand is silicaCrystalline silica is divided into three kinds: quartz, scale quartz and square quartz because of their different crystal structures. Pure quartz is a colorless crystal, large and transparent, prism like quartz called crystal. If they contain trace impurities in crystal with different colors, amethyst, Citrine etc.. Ordinary sand is quartz fine sand, a (iron impurity) and white sand (less impurities, Jiao Chunjing). Silica crystal, silicon atoms with 4 valence electrons and 4 oxygen atoms form 4 covalent bonds, silicon atoms in the tetrahedral centers, 4 vertices of 4 oxygen atoms in the tetrahedral, SiO is most simple composition, only said the number of atoms of silicon and oxygen silica crystals the ratio of the. Silicon dioxide is an atomic crystal.
Q:Compared with carbon black, what kind of properties do the white carbon reinforce?
Carbon black, also known as carbon black, is an amorphous carbon. Black powder, light loose and very fine, the surface area is very large, ranging from 10~3000m2/g, is carbon containing materials (coal, natural gas, heavy oil, fuel oil and other products) in the air under conditions of inadequate the incomplete combustion or thermal decomposition and the. Specific gravity 1.8-2.1. Made of natural gas known as "black", the oil made from said "black", called "made by acetylene acetylene black". In addition, there are "groove black", "furnace black."". According to the performance of carbon black, there are "reinforcing carbon black", "conductive carbon black" and "wear-resisting carbon black". Can be used as a black dye, used in the manufacture of Chinese ink, ink, paint, etc., but also used as rubber reinforcing agent.
Q:What are the differences between silica and alumina in powder coatings? Almost all of them are rheological additives and anti - caking groups.
There are many methods for matting agents. They can be divided into two kinds according to their manufacturing process. One is made by hydrothermal method, and the produced silica is relatively loose. Products made from silica gel are tough in texture. The treated two types of products can be made into standard silica matting agents. Processing refers to the use of organic (Paraffin) or inorganic materials to modify the surface of silicon dioxide to a certain extent.Compared with silica matting agent, the treated silica has different particle size, particle size distribution and pore volume. Hydrothermal matting agents are also different in particle size and distribution. Untreated and treated products are also different. At present, there is only one kind of matting agent suitable for special occasions. The matting agent is prepared by pyrolysis and has strong extinction efficiency, and is especially suitable for water base coating system. The extinction effect of silica is relatively strong, which may lead to higher viscosity when the concentration is high. The tendency to precipitate during storage, especially untreated silica. To avoid accumulation, we can use paraffin or pyrolytic silica. The matting agent can adjust the extinction degree of 45 DEG, 60 DEG and 85 deg. Coatings with silica matting agents can be painted. All of these are "stir-in" products. The synthetic aluminum silicate can partly substitute titanium dioxide as a high quality increment agent and can be applied to emulsion primers. The product can exhibit a balanced extinction effect in the dried emulsion film. It can be used as matting agent in long oil alkyd resin system, but it must be dispersed with pigment and filler. In addition to the powder coating system, the silica matting agent can be applied to all coatings.

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