REFRACTORY COMPOSITION FOR PRODUCING COMPACT CASTABLE AND WET SPRAYING METHOD

摘要

A refractory composition for producing a compact castable, comprising a main material free from cement, containing 70 to 98 wt.% refractory aggregate of less than 10 mm in grain size and 2 to 30 wt.% refractory ultra-fine powder of less than 10 mu m in grain size; and a dispersant equivalent in quantity to 0.01-1.0 wt.% of the main material. The composition kneaded with water or other liquid to a desired softness, or in the form of a premix, is forcedly sent to a spray nozzle by a pressure-feed pump, and sprayed together with a coagulant by compressed air.