company name: gansu lixinyuan microsilica co. ltd
contact person: manager sun
telephone: 0931-8516622
phone: 18919161001
email address: microsilica@gslxy.cn
fax: 0931-8507755
website: www.gslxy.cn
address: no. 2599, yanbei road, chengguan district, lanzhou city, gansu province
microsilica has been used to improve refractories for more than 40 years. it will have the following characteristics:
increase the fluidity of castable refractories, reduce water consumption, make it easy to shape, and increase production efficiency greatly;
the density and strength of the refractories are greatly improved due to the interstitial action of the ultrastructure.
with high activity, it is easier to form mullite phase under the condition of the existence of al2o3 composition, so that the high-temperature strength and thermal shock of the refractories are obviously improved.
in addition to being widely used in castable refractories, jin yu is also being widely used in electric melting and sintering refractories.
application parameters of silica powder in refractories:
型号 | 二氧化硅(%) | 烧失量(%) | 水含量(%) |
sf85 | ≥85.0 | ≤6.0 | ≤3.0 |
sf88 | ≥88.0 | ≤4.0 | ≤2.0 |
sf90 | ≥90.0 | ≤3.0 | ≤1.5 |
sf92 | ≥92.0 | ≤2.0 | ≤1.0 |
sf95 | ≥95.0 | ≤1.5 | ≤1.0 |
as a new raw material, microsilica is widely used in refractory industry. it plays an important role in the improvement of amorphous refractory. characterized by:
there are many pores in traditional refractories, and the microsilica powder is filled in the pores, which can increase the volume density and decrease the porosity, and the strength can be obviously enhanced.
colloidal particles can be formed in water with high activity. proper amount of dispersant can enhance fluidity and improve pouring performance.
the microsilica is easy to form - si-oh group in water and has strong hydrophilicity and activity. it can enhance the agglomeration of refractory materials, improve the high temperature performance and extend the service life of refractory products.
application of microsilica in refractory industry
substitute pure aluminum oxide mud for refractories.
as an additive, the strength and high temperature performance of amorphous and fixed refractory products are greatly improved.
yu sheng steel barrel as a whole pouring combined coagulant.
other refractory products adhesives, binders, coagulants, additives.
consulting
