FIELD: refractory materials. SUBSTANCE: material contains 20- 80% ceramic matrix, 5-40% insulation microspheres, 0.5- 15% binder(s), and up to 5% water. Material further contains deflocculant and colloidal silica (up to 4 and up to 20%). Ceramic matrix contains glasslike granules of sprayed silica. Insulation microspheres are hollow silica and alumina spheres. Material is prepared from ceramic slurry with viscosity no higher than 8 Pa.s. Material is used for coating refractory parts, which are immersed in ceramic slurry for less than 1 min. EFFECT: improved heat-insulation characteristics and increased adhesion of containing layers. 20 cl, 1 tbl, 3 ex
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