REFRACTORY COMPOUNDS Russian patent published in 2000 - IPC

FIELD: lining of heat assemblies and radiation tubes of thermic furnace burners. SUBSTANCE: refractory compound comprises electrocorundum having 100-200 mcm fraction, alumochromophosphate binder, α-Al₂O₃ with dispersity of 3-6 mcm. In order to make it more plastic, refractory compound further comprises mullite corundum powder having 1000-3000 mcm fraction, electrocorundum having 500-800 mcm fraction, and alumosilicate component. The latter includes, e.g. pyrophyllite, clay, kaolin, and sillimanite, ratios of components being as follows, wt %: mullite-corundum powder having 1000-3000 mcm fraction, 3-8; electrocorundum having 500-800 mcm fraction, 15-25; electrocorundum having 100-200 mcm fraction, 33-40; alumochromophosphate binder, 9-13; α-Al₂O₃ having dispersity of 3-6 mcm, 10-18; and alumosilicate component, 15-25. Invention makes it possible to increase plasticity of refractory compound for improving processibility of products prepared therefrom by compression. EFFECT: improved properties of the refractory compound. 1 tbl