Repair of the refractory lining of the wall of a shaft furnace and a repaired shaft furnace

Abstract From the Canadian patent

In the repair of a refractory lining of a shaft furnace having a steel shell, a worn residual refractory lining inside the shell and cooling plates extending through the shell into the refractory lining, the worn lining is retained and an additional lining structure is added by (a) forming a refractory concrete layer with a flat upper surface at a ring of said cooling plates (b) building up on the flat upper surface a refractory brickwork of blocks which is selfsupporting and which has recesses in which cooling plates are located with clearance, the blocks being selected in accordance with the amount of wear locally, (c) filling space between the brickwork and the residual lining with …