microsilica for refractory materials【价格 厂家 供应】-pg电玩城

microsilica has been used to improve refractories for more than 40 years. it will have the following characteristics:

1. improve the fluidity of cast refractory, reduce water consumption, make it easy to shape, and greatly improve the production efficiency;

2. the compactness and strength of refractories are greatly improved due to the interstitial effect of the ultrastructure;

3. the microsilica powder has high activity. under the premise of the existence of al2o3 ingredients, it is easier to generate mullite phase, which significantly improves the high-temperature strength and thermal shock of the refractory.

4. at present, in addition to the general use in castable refractories, a large number of applications are also being made in electric melting and sintering refractories.

application of silica powder in refractories:

microsilica, as a new raw material, is widely used in refractory industry. it plays an important role in the improvement of amorphous refractory. characterized by:

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 has strong activity. colloidal particles can be formed in water.

3. it 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.