What is the difference between microsilica powder and silica micropowder?

1. In terms of color, microsilica powder is more abundant from white, gray, gray-black to black, while silica micropowder is mainly white, and the degree of whiteness is measured by "whiteness". Micro-silica powder also has white color, but the whiteness is lower, and the stability of the quality is not enough.

2. in terms of density, microsilica powder recycling after subsequent encryption, density in 200-700KG / cubic meter, while the silica powder is obviously much heavier, about three times heavier than microsilica powder. 3. in terms of specific surface area, the density is mainly white, and from the "whiteness" to measure the degree of white.

3. in terms of specific surface area, the specific surface area of microsilica powder is very large, in 20-28M3/G, silicon powder is rarely measured by this indicator, but also a lot smaller.

4. In terms of purity, the content of microsilica powder is seldom 97%, while silica micropowder is usually 99%.

5, from the use of micro-silica powder is very light and very active, in the use of the process to prevent the escape of the secondary pollution caused by the silica micropowder generally do not have such a situation.

The difference between silica micropowder and microsilica powder is mainly different silica content, the specific differences are as follows:

1.the composition is different: silicon micropowder silicon content is relatively high, basically in 99% or more; micro-silica powder silicon content is generally in 80-92%, 94% or more belong to a very uncommon.

2.the material is different: silicon powder is a non-toxic, tasteless, non-polluting inorganic non-metallic materials. Because it has good temperature resistance, acid and alkali corrosion resistance, high thermal conductivity, high insulation, low expansion, chemical stability, hardness and other excellent properties; micro-silica powder, also known as silica fume or cohesion of silica fume, ferroalloys in the smelting of ferrosilicon and industrial silicon (silicon metal), the mineral furnace produces a large number of volatile and strong SiO2 and Si gas, the gas is discharged with the air quickly oxidized and condensed precipitation and become.

3.the role of different: silicon powder to significantly improve the compressive, flexural, impermeable, corrosion, impact and wear resistance, with water retention, prevent segregation, water secretion, significantly reduce the concrete pumping resistance, significantly extend the service life of the concrete, significantly reduce the spray concrete and pouring material of the ash, improve the thickness of a single spray layer, is a necessary component of high-strength concrete, C150 concrete has been the application of the project; microsilica powder high quality! Microsilica powder is mainly used as high-performance refractory castables, prefabricated parts, ladle materials, breathable bricks, self-flowing refractory castables and dry and wet spray materials. In the field of high temperature ceramics.