MONOLITHIC REFRACTORY FOR SPRAYING

PURPOSE: To produce a monolithic refractory having improved peeling resistance by compounding a refractory aggregate with a weakly acidic sodium phosphate and slaked lime at prescribed ratios and adding prescribed amounts of aluminum lactate, an organic fiber and borosilicate glass powder to the mixture. CONSTITUTION: This monolithic refractory for spraying and applicable at normal temperature as well as high temperature can be produced by compounding magnesia, alumina, silica, SiC, graphite, alumina cement, fire clay, etc., at respective specific ratios, incorporating the obtained refractory aggregate with 0.1-6.0wt.% (outer percentage) of a weakly acidic sodium phosphate such as acidic sodium pyrophosphate of pH3.0-5.0 and 0.1-4.0wt.% of a bonding assistant such as slaked lime and optionally further compounding 0.1-3.0wt.% of a burst- preventing agent such as aluminum lactate, 0.01-0.5wt.% of an organic fiber soluble in water or hot water and capable of easily forming through-holes such as vinylon fiber and 0.1-5.0wt.% of borosilicate glass powder.