IMMERSION PIPE FOR VACUUM DEGASSING APPARATUS

摘要

PURPOSE:To prevent the cracking of a refractory brick layer and to extend the life of the resulting immersion pipe by filling a castable refractory contg. a shrinkable material into the space between a metallic cylinder and the inner brick layer to absorb the thermal expansion of the brick layer. CONSTITUTION:A castable refractory 6 contg. <=60vol% shrinkable material is filled into the space between a metallic cylinder 2 and a refractory brick layer 5 lining the cylinder 2. A castable refractory layer 4 is formed around the cylinder 2. The life of the resulting immersion pipe is extended because the thermal expansion of the brick layer 5 is absorbed in the shrinkable refractory 6 to prevent the cracking of the layer 5.