Refractory material itself has the characteristics of resistance to slag, chemical, airflow and other aspects of a certain period of erosion, but more than a certain period of time will result in localized damage to the lining, flaking and other phenomena, then the need for refractory repair, through a series of repair operations so that refractory materials can continue to work to ensure that the normal operation of the kiln.
What are the refractory repair methods? I will summarize the refractory repair method, there are five methods:
1, pouring repair method is to pour the refractory material through the method of pouring to repair parts, and the original lining combined into one to resist the erosion of slag.
2, hot spray repair method is through the gun will be indefinite refractory material sprayed to the required parts, and attached to the surface to reach a certain thickness, in lieu of re-lining refractory brick lining, in the remnants of the brick lining or shell surface to realize the reconstruction of the furnace lining, to restore the shape of the furnace. Compared with other repair methods, spray patching is characterized by the repair of the furnace lining integrity is good, can be reconstructed furnace shape.
3, the spray method is the use of projectile machine will not be shaped refractory material projected to the parts to be, the operation is simple and convenient.
4, grouting repair method, also known as the press-in repair method, is the use of special press-in equipment, under certain pressure conditions, through the pipeline to the specific refractory materials from the furnace outside the delivery to the designated repair parts, to fill gaps and repair the lining of the furnace and other purposes.
5, digging repair method is also called masonry method, that is, the lining of the local damage to the first part of the demolition and then the use of refractory bricks to re-lay, this case requires the furnace to cool down before construction!
