High-temperature blowing repair material null for steelmaking reactor

摘要

PURPOSE: To provide hot blowing repairing material capable of executing in low water content and strongly binding. ;CONSTITUTION: In a blowing repairing material consisting essentially of a basic aggregate such as magnesia or dolomite and containing a phosphoric acid salt or silicic acid salt as a binder, 1-5wt.% secondary particles of amorphous silica having particle size distribution of ≤50wt.% in through amount in dry sieve of 75μm mesh is blended to provide the objective blowing and repairing material improved also in dehydrating property and having high adhesion. Further, dehydrating property and adhesion of the repairing material can further be improved by blending 0.05-0.5wt.% organic fiber such as pulp or vinylon therewith.;COPYRIGHT: (C)1994,JPO&Japio