High purity Silica Oxide

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Specifications

1.import Micro-silica
2.Manufacturer
3.Production capacity 3000 ton per month
4.Third party inspection certificat

We are a professional trading leading group in china with more than 20 years trading experience .our major products are silica fume/microsilica and mainly export to middle east, australia , japan and south korea. the sio2 of silica are 85%, 90% and 93% 95% 96% 97% and each order will be tested by sgs test before shipment.

Technical Data:

Parameters	Standard Value
Silicon Dioxide(SiO2)	min 90 %
Loss on Ignition(L.O.I) @ 975°C	max 3 %
Moisture Content (H2O)	max 2 %
Percent Retained On 45μm (325 sieve)	max 2 %
Bulk Density	600-700kg/m3

Microsilica Packing: 900kg/jumbo bags and 25kg small plastic woven bags.

High purity Silica Oxide

Q: Industrial production of silicon dioxide: Quartz sand is a term of mineral products, it refers to all kinds of sand quartz components accounted for absolute advantage, such as sand, river sand, Sand Lake etc.. Geology divides them into alluvial sand, alluvial sand and residual sand according to their causes. Changes of mineral content of quartz sand, quartz, feldspar and detritus, secondly contains all kinds of ore (pomegranate Zi Shi, tourmaline, pyroxene, amphibole, titanite, topaz, epidote, ilmenite) and mica, chlorite, clay minerals etc..

Q: Can silica and ammonium sulfate be used in combination?: The requirements of the magnetic field are achieved by the selection of permanent magnetic material and the design of magnetic circuit. A magnetic field is formed in the discharge space. Permanent magnets or electromagnets can be used. Although electromagnets are tunable, we use permanent magnets in view of the size and convenience of the space usage of the ion source.

Q: How to remove silica from slag: The precipitation separated washed and calcined at a temperature of 950-1200 DEG C, get a alumina powder, the mother liquor can be recycled. In the lattice type alpha alumina, oxygen ion for the six party close packing, Al3+ symmetrically distributed in eight sides surrounded with oxygen ion centers, crystal lattice can be great therefore, melting point, boiling point is high. Alpha alumina insoluble in water and acid, also known as alumina industry, is the basic raw material of aluminum;

Q: Why is silica in high purity water unstable?: Of course, structure and size of the R group of substances in solubility in water also. Such as alcohol: R - OH, with the increase of R group, part of the increase of non polar molecules, so with water (polar molecules) structure difference increases, so also decreased the solubility in water.

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.

Q: Does precipitated white carbon do any harm to the body?: Precipitated silica, mainly made up of silica, does no harm to the body.

Q: How can quartz sand and silica be distinguished?: Their database should have a contrast picture of quartz sand, depending on whether they're serious or not.It's better if you have a relationship with the customs and then declare it as you said. The symbolic inspection of the customs will be over.Customs inspection of goods in accordance with the declaration of the document is generally instrument scanning, encountered unclear, or suspected of goods, to open the box, open package inspection. After checking the machine, but also random checks, that is, unpacking, open the luggage, open the package to view. This is random, see a few finished, and not one by one to see. Accidental circumstances. It's very busy. I've seen the machine sweep it, too.

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 are the differences between micro powders, silica gel and silica?: In the pharmaceutical industry, most of the time, micro powder, silica gel and silica refer to the same thing, which can be interchanged most of the time in practical applications. According to the different preparation process can be divided into gas phase silica (colloidal silica) and silica, silica powder is fumed silica (colloidal silica) refers to the use of gas phase method prepared silica powder; silica is prepared by precipitation of silica gel (actually very fine).

Q: The food additive has "silica dioxide", can you eat it?: In food, it is food grade silica, an anti caking agent that prevents food from lumping and is edible.

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