| 摘要 |
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. Also part of the present invention are compositions formed according to the method of the invention. |
