Abstract: Methods for forming monolithic refractory compositions may include providing a particulate refractory composition including 2 to 90 mass-% alumina, aluminosilicate, or mixtures thereof; 2 to 70 mass-% silicon carbide; 2 to 10 mass-% carbon; 1 to 10 mass-% Si powder; 1 to 3 mass-% microsilica; and up to 5 mass-% ferrosilicon. The methods may further include adding an amount of water to the particulate refractory composition to form a uniform mixture, installing the uniform mixture and allowing it to set, such that the monolithic refractory composition is required, and heat-treating the set mixture at a temperature no higher than 1200° C. under atmospheric conditions to form a monolithic refractory composition. The methods may optionally include heat-treating the obtained monolithic refractory composition to form silicon carbide whiskers within the monolithic refractory composition.

Abstract: The present invention relates to methods for forming monolithic refractory compositions, comprising the steps of providing a particulate refractory composition comprising 2 to 90 mass-% alumina, aluminosilicate or mixtures thereof, 2 to 70 mass-% silicon carbide, 2 to 10 mass-% carbon; 1 to 10 mass-% Si powder, 1 to 3 mass-% microsilica, up to 5 mass-% ferrosilicon, and optionally up to 5 mass-% cement, adding an appropriate amount of water to the particulate refractory composition to form a uniform mixture, installing said uniform mixture and allowing it to set in such location and arrangement where the monolithic refractory composition is required, and heat-treating said set mixture at a temperature no higher than 1200° C. under normal atmospheric conditions to form a monolithic composition, as well as optionally heat-treating the obtained monolithic composition to form silicon carbide whiskers within the monolithic refractory composition.