According to the specific conditions of various furnaces and thermal equipment, proper selection and application of refractory material is very necessary. It is to improve the service life of the kiln and thermo technical equipment, reduce maintenance time, reducing the consumption of refractory material and energy, improve furnace production and guarantee the quality of the products and reduce the cost of production plays an important role.
As is known to all, there will be some damage reasons for different kinds of kilns or thermal equipment under different working conditions. Even in different parts of the same furnace or thermal equipment. There are many factors that affect the damage of refractory materials:
(1) The use of the temperature is too high, exceeding the limit temperature of the refractory;
(2) The temperature changes in temperature, refractory material damage in blast crisis;
(3) The refractories by slag furnace, mechanical shock or friction and wear serious the damage;
(4) The refractory material is damaged by the high temperature physical and chemical erosion and penetration of the molten metal, slag and furnace gas;
(5) The thermal stress and the weight of the heat generated by the heat of the refractory material cause damage to the stress concentration and the volume effect.
The above factors are not isolated, only to find out the main influencing factors in order to correct selection of refractory materials.
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