characteristics of microsilica in refractory castable-pg电玩城

as a new raw material, microsilica is widely used in refractory industry. it plays an important role in the improvement of amorphous refractory. it is filled in the pores of refractories, which increases the volume density, reduces the apparent porosity and increases the strength. it has very strong activity, the formation of colloidal particles in water, the addition of a proper amount of dispersant can enhance its fluidity, thus improving the properties of the castable.

microsilica is widely used in refractory castable. it plays an important role in the improvement of amorphous refractory. characterized by:

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

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.

4. the addition of microsilica into refractory castable has the effect of about 5 times of cement. the application in ordinary concrete and low-cement castable can reduce the cost and improve the durability.

5. improve the compactness of cast refractory. when co-existing with al2o3, it is easier to form mullite phase, so that its high temperature strength and thermal shock resistance are enhanced.

refractory castable is mainly used in metallurgical industrial kilns and widely used in petroleum, chemical, building materials, electric and mechanical industrial kilns and thermal equipment.

microsilica is a kind of good grouting material, is a smelter in smelting ferrosilicon alloy or semiconductor silicon, the collected dust from the smoke, the very fine particles, specific surface area is big, mixed with microsilica in the serum, can make the slurry has a good note, permeability and durability, and can effectively improve the permeability and strength of grouting engineering value.