Matters should be noticed in refractory brick sintering process

Refractory brick is a kind of high temperature resistance, refractoriness very high brick material, in industrial furnace refractory brick is very broad scope of application. Refractory brick sintering is carried out in the high temperature, today we have to know what should pay attention to the sintering process of refractory bricks in question!

1.         Reduce the granularity of material. In general, the raw material is fine, the greater area, surface energy is higher, the powder surface and internal defects would occur more. Powder with high activity, increasing the sintering driving force, shorten the atomic diffusion distance, improve the solubility of particles in liquid phase.

2.         Activated sintering and two step sintering. Activated sintering is by increasing the activity of the raw materials and to make it easy for sintering. To reduce the particle size of raw materials is also a kind of living. But rely on mechanical method to reduce the size of raw material is limited, and the energy consumption is greatly increased. Using chemical method can also improve the material activity, such as the widely used in alkaline refractory raw materials in the two step calcination method, namely light burning, pressure ball (blank) - dead burned, is very effective.

3.         Additives to promote sintering in a wide range of sintering of refractory bricks of raw materials in the present. In the solid phase sintering, a small amount of additives can form solid solution and sintering of health, promote and accelerate the sintering defects increase; in the sintering of a liquid phase in the nature, additive can improve the liquid phase sintering and promote.

After we introduce today is the basic knowledge about firebrick sintering process, we believe that on refractory brick sintering have a comprehensive understanding of it, if you want to know more about the knowledge of refractory brick contact us!