Fire-resistant material casting material micro-silica powder product details:

White Microsilica Powder for refractory materials, 96% silicon dioxide content, density 240-300, 20kg standard packaging.

Application Principle of Microsilica in Refractory Materials:

Microsilica is a ultra-fine solid material, widely used in the refractory industry as a new raw material. It plays a significant role in improving the properties of refractory materials. When it fills the pores of refractory materials, it increases bulk density, reduces apparent porosity, and significantly enhances strength. It possesses strong reactivity, forming colloidal particles in water. By adding a moderate amount of dispersant, its fluidity is improved, thereby enhancing the properties of casting materials. It has strong hydrophilicity, which enhances the cohesiveness of refractory materials and greatly improves their resistance to high temperatures, extending the service life of refractory products. It is extensively used in high-performance refractory castables and precast products, large-scale iron trough materials and ladle materials, porous bricks, coating materials, self-flowing refractory castables, wet and dry spray processes, oxide-bonded silicon carbide products, corundum-mullite slabs, high-temperature wear-resistant materials and products, corundum and ceramic products. Additionally, it is also used to varying degrees in the cement and construction materials industry.

Microsilica's role in refractory materials:

(1) Traditional refractory materials have numerous pores, filled with micro-silica powder to enhance volume density and reduce porosity, significantly boosting strength.

(2) Microsilica powder has strong activity, forming colloidal particles in water. Adding an appropriate dispersant can enhance its fluidity, thereby improving casting properties.

(3) Microsilica readily forms -Si-OH groups in water, exhibiting strong hydrophilicity and activity. It enhances the cohesiveness of refractory materials and significantly improves their high-temperature properties, thereby extending the service life of refractory products.

Micronized silica powder is actually applied in the refractory industry in the following aspects:

(1) Substitute for pure aluminum oxide mud as refractory material.

(2) As an additive, it produces both amorphous and shaped refractory products, significantly improving their strength and high-temperature properties.

(3) Use coagulating agents for the overall pouring of steel drums.

(4) Adhesives, binders, accelerators, and additives for other refractory products