Cooling Method of Refractory Aluminum Silicate Products after sintering

The highest firing temperature and holding time of refractory aluminum silicate products are determined

by the nature of the raw materials used and the performance requirements of the products. In order to
ensure uniform burning and sufficient reaction, the heat preservation time must be carried out at the
highest temperature. It is generally believed that the longer the holding time is, the more adequate the
reaction is. But the reaction rate decreases with time. Thus, the longer the holding time, the higher the
fuel consumption. Under the premise of ensuring the performance of products, shortening the holding
time is of great significance to energy saving.

Insulation slow cooling  

According to the furnace structure and heat capacity, can take a small amount of heating slow cooling,
so that the furnace temperature to slow down slowly. This method is suitable for large products, complex
structure, linear expansion coefficient or cooling period of polycrystalline transition products. For small
products, it is not necessary to do so, so as not to waste energy, delay the production cycle.

Cooling mode  

The so-called cooling method refers to the cooling rate of the product and its associated temperature.
Depending on the speed of cooling, the following cooling methods can be adopted. The cooling
method is based on the intermittent kiln, placed in the continuous production of the furnace, its
cooling rate depends entirely on the length and structure of the temperature.  

Furnace cooling  

When the end of the insulation period, you can cut off the power to its natural cooling, to be reduced
to about 200 ℃, you can open the furnace. Such a simple operation, low labor intensity, is generally
no special requirements of the products, especially the most commonly used method of small kiln.
For large-scale kiln, the heat capacity is too large, the natural heat is too slow, in order to shorten
the production cycle, we must take appropriate ventilation and other measures. 

Quenching

The use of such a cooling method is due to the product structure and performance requirements.
According to the needs and possible, can be used in water quenching, oil quenching, asbestos
and other inorganic powder quenching, air cooling or air quenching, etc..

Matrix Industry China Limited
Professional manufacturer of Aluminum Silicate Refractories Fiber Materials in China.
URL:  www.mx-refractory.com
email: jenny@mx-refractory.com // mxrefractory@gmail.com