unique properties of microsilica for refractory materials-pg电玩城

the physical and chemical properties of microsilica add unique properties to refractory castable.

microsilica has added several beneficial properties to refractory products. submicron particles contribute to effective particle filling and can produce self-flowing castings with minimal water addition.

in addition to this filler and flow enhancement effect, silicon micropowder also has a positive effect on high temperature performance. small particles with high specific surface area make the powder very active during sintering.

typical examples are the reaction between alumina and silica to form mullite, and the reaction between magnesium oxide and silica to form forsterite.

as a new raw material, microsilica is widely used in heat preservation and fire protection. it plays an important role in the improvement of amorphous refractory. and the physical performance is as follows:

1. there are many pores in traditional refractory materials, and microsilica powder is filled into the pores, which improves the volume density and reduces the porosity, and the strength can be significantly enhanced.

2. the microsilica powder has strong activity. colloidal particles can be formed in water.

3. the microsilica is easy to form -- si-oh group in water, with strong hydrophilicity and activity, which can enhance the agglomeration of refractory materials, greatly improve the high-temperature performance and extend the service life of refractory products.

microsilica for refractory materials is widely used in refractory industry. practical application in the following aspects:

substitute pure aluminum oxide mud for refractory material. as an additive to produce amorphous and shaped refractory products, their strength and high temperature performance are greatly improved. it is used as an integral pour and coagulant for steel ladle. other refractory products adhesive, binder, coagulant, additives.

refractory industry healthy development, growing in our country, the scale of production has been the world's first for many years, at present, the industrial production of refractory products and total, not only meet the domestic high temperature industrial production, the demand of the development, and product sales to the southeast asian nations and the americas, the european union, russia and other regions and countries. but the world economic pattern has changed, the development of refractories industry also brought a new test. in order to maintain its dominant position and move towards a better tomorrow, china's refractory industry should keep innovating and developing constantly and adapt to the new international market demand.