Correct Selection of Refractory material for Hot Air Furnace

Hot blast stove is the key to the relationship between the blast furnace system, hot blast furnace furnace life of the generation of the age has an important impact, to improve the life of hot stove, refractory brick and refractory mud should be selected in addition to good refractory Quench , Masonry should also have a good overall structural strength, so that the sealing is good, good insulation.

According to the temperature inside the furnace, the refractory material lining is low cement high-aluminum heat-resisting material, and the refractory lining thickness is determined according to the heat transfer calculation, and the outer surface temperature of the hot-blast stove should not be higher than 60 DEG C under the ambient temperature. The refractory lining material of hot blast stove must have factory certificate and pass the inspection of third party authority.

Refractory brick used for blast furnace in the hot blast furnace selection it is necessary to consider life expectancy, but also consider the cost. In the hot stove in the lower part of the clay brick and high alumina brick. In the upper part of the hot stove, high temperature is adopted, and silica brick is used. refractories mud selection and brick with a matching chemical composition, high temperature performance of the corresponding higher grades. In the furnace shell and insulation lining choice spray coating material as a protective layer, to avoid the furnace of harmful components of the erosion of the shell, the specific choice may be based on the actual situation.