Yuanlei Small Classroom | Types of Silica Powder

Release time:

2024-01-29 09:38

silicon powder

Silicon powder is made of natural quartz (SiO2) or fused quartz (natural quartz by high temperature melting, cooling after amorphous SiO2) by crushing, ball milling (or vibration, air flow grinding), flotation, pickling purification, high purity water treatment and other multi-channel processing of micro powder.

silicon powderIt is made of natural quartz (SiO2) or fused quartz (amorphous SiO2 after high temperature melting and cooling of natural quartz) by crushing, ball milling (or vibration, air flow grinding), flotation, pickling purification, high purity water treatment and other multi-channel processing of micro powder.

Characteristics of silicon powder



Significantly improve compression resistance, bending resistance, impermeability, corrosion resistance, impact resistance and wear resistance; It has the functions of water retention, segregation prevention, bleeding and greatly reducing concrete pumping resistance. Significantly prolong the service life of concrete, especially in harsh environments such as chloride pollution erosion, sulfate erosion and high humidity, which can double or even several times the durability of concrete. Greatly reduce the floor ash of sprayed concrete and castable, improve the thickness of a single spray layer; is a necessary component of high-strength concrete; has about 5 times the effect of cement, in ordinary concrete and low cement castable application can reduce costs. Improve durability; effectively prevent the occurrence of concrete alkali aggregate reaction; improve the compactness of cast refractory.

Application of silicon powder

By level

Silicon micropowder can be divided into: ordinary silicon micropowder, electrical grade silicon micropowder, electronic grade silicon micropowder, molten silicon micropowder, ultrafine silicon micropowder,"Spherical" silica powder.

...ordinary silicon powder

It is mainly used for epoxy resin castable, potting material, electrode protection layer, metal casting, ceramic, silicone rubber, coating and other chemical industries.

Electrical grade silicon powder

It is mainly used for insulation casting of ordinary electrical devices, insulation casting of high-voltage electrical appliances, APG process injection material, epoxy potting material, high-grade ceramic glaze, etc.

3.Electronic grade silicon micropowder

The main purpose is mainly used for integrated circuits, electronic components of plastic packaging materials and packaging materials.

4.fused silica powder

Fused silica micropowder (WG) raw material is natural quartz by high temperature melting, cooling after the amorphous SiO2, through multi-channel processing and micro-powder. The product has high purity, low thermal expansion coefficient, low internal stress, high moisture resistance, low radioactivity and other excellent characteristics.

Mainly used for large-scale and ultra-large-scale integrated circuits with plastic sealing materials, epoxy castables, potting materials, and other chemical fields.

5.ultrafine silica powder

The main use is mainly used in coatings, paints, engineering plastics, adhesives, Qui rubber, precision casting advanced ceramics.

The one."Ball Type"silicon powder

"Pelletized" silica powderSelection of high-quality quartz ore, processed by a unique process of a high-strength, high hardness, inert spherical particles, its main component SiO2 content of more than 99.6, density of 2.65, Mohs hardness of 7, fineness between 325 mesh to 5000 mesh, whiteness between 70-94, with a reasonable and controllable particle size range, the appearance of white powder.

High-quality "pellet" silica powder with extremely low oil absorption, mixing viscosity and friction coefficient. Its unique spherical structure, compared with other angular quartz powder (silica powder), the powder has good fluidity, and the angle of repose formed by powder accumulation is small, so it is dense when mixed with organic polymer materials to enhance the strength of the body. Easy to disperse, uniform mixing, can significantly increase the fluidity of the material.

Silicon micropowder, quartz, fused, sio2, main use, natural, process, for, improve

Different applications and specifications of washed kaolin and calcined kaolin


Kaolin is a non-metallic mineral, which is a kind of clay and clay rock mainly composed of kaolinite clay minerals. Because it is white and delicate, also known as white earth. It is named after Gaoling Village, Jingdezhen, Jiangxi Province.

Source Lei gas barium sulfate ten uses


Barium sulfate is based on barite as the main raw material, through beneficiation, ore washing, crushing and other processes. Barium sulfate has a hardness of 3~3.5 (Mohs) and a specific gravity of 4.3~4.7. It has the characteristics of high specific gravity, low hardness and brittleness. Barite is almost insoluble in water, ethanol and acid, soluble in hot concentrated sulfuric acid. With the development of some high-performance barium sulfate products, the application field of barium sulfate is constantly expanding.