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!