The New Raw Material—Fused Silica

fused silica can significantly improve the strength of traditional refractories, bulk density and lower porosity filling the pores. Silicon powder improves the casting performance. It has strong activity and can form the colloidal particles in water.fused silica is a new raw material. There is more than 40 years history for it using in refractory improvement. It is widespread used in the refractory industry. fused silica have an important role in the improvement of unshaped refractories. It mainly improves the strength. There are numerous pores in traditional refractories. Adding an appropriate amount of dispersing agent can enhance the mobility, thereby improving casting performance. At the same time, fused silica can improve the heat resistance, durability and extend the life of refractory products. fused silica is easy to form-Si-OH groups in the water. It has a strong hydrophilic and activity that can enhance the cohesion of the refractories Meanwhile it greatly improves high temperature performance and prolong the service life of refractory products.

The high temperature calcium silicate lightweight insulation materials, electromagnetic kiln using corundum mullite push plate, high-temperature wear-resistant materials and products, corundum and ceramics, sialon combination products. fused silica in the following areas for the refractories industry: high-grade and high-performance refractory castable materials and prefabricated components, a large iron trough, ladle materials nickel powder and ventilation tiles, and so self-flow refractory castable materials dry and wet spray materials, the oxide of silicon carbide products.

In addition to widespread use in the casting refractories, fused and sintered refractory have a wide range of applications.fused silica has been widely used in the refractory industry, depending on the performance of refractory raw materials, orthogonal design, by comparing the test, choose the best formula. Practical application in the following aspects: instead of pure aluminum oxide mud refractories; as an additive in the production of monolithic and shaped refractory products, its strength, high temperature performance has greatly improved; for casting ladle as a whole combination of coagulant; other refractory products cohesion agent, binder, coagulant agent, additives, used as a low cement castable.

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