PROCESS FOR INJECTING TAPHOLE CLAY IN THE TAPHOLE OF A METAL PROCESSING INSTALLATION SUCH AS A BLAST FURNACE

摘要

REFRACTORY EARTHS OF THE BOULONNAIS OF THE TECHNICAL CONTENT OF THE INVENTION Method of injecting a plugging mass into a taphole of a metallurgical reactor, such as a blast furnace. According to this method, a first primary sealing mass (4) is injected, mixed with a binder, having a determined composition and physicochemical characteristics, and this primary mass is allowed to solidify thermally; after this mass has been cooked, a hole (8) is drilled therein of a determined length, thereby degassing, and a second sealing mass is injected therein, called a secondary mass of composition and of appropriate physicochemical characteristics, mixed with a binder, more fluid than the primary mass and at a curing speed lower than that of the latter, so that this secondary mass can diffuse into cracks in the primary mass before being solidified. The secondary mass strengthens the zones of the primary mass weakened by micro-cracking, and thus makes it possible to find a suitable taphole length. Fig. Unique