Light and environment-friendly refractory material and preparation method thereof

Abstract

The invention discloses a light and environment-friendly refractory material. The refractory material comprises the following raw materials in parts by weight: 18-30 parts of aluminium nitride, 40-50 parts of magnesia-chrome spinel, 30-40 parts of amorphous graphite, 1-1.6 parts of sodium tetraborate, 2-3 parts of bone black powder, 0.1-0.2 part of calcium stearate, 0.6-1 part of dodecyl dimethyl betaine, 5-7 parts of terpene resin, 10-16 parts of linen fiber, 2-3 parts of glacial acetic acid, 26-30 parts of ethyl orthosilicate, 80-102 parts of 6-10% ammonia water, 100-110 parts of 3-5% hydrogen peroxide and 2-3 parts of calcium oxide. The refractory material and the preparation method have the advantages that ethyl orthosilicate is hydrolyzed into silanol sol under the condition that the catalyst glacial acetic acid is added, the silanol sol is mixed with a calcium fiber activating solution, a hybrid containing calcium, carbon and silicon is obtained through evaporation of a solvent, and finally through high-temperature carbonization, the fiber activating solution provides a carbon source and a calcium, carbon and silicon compound additive is obtained; the calcium, carbon and silicon compound additive has stable chemical properties, high thermal conductivity coefficient, low coefficient of thermal expansion, thermal shock resistance, light weight and high strength.

Description

technical field [0001] The invention relates to a refractory material, in particular to a lightweight environment-friendly refractory material and a preparation method thereof. Background technique [0002] Refractory materials refer to a class of inorganic non-metallic materials with a refractoriness not lower than 1580°C. Refractoriness refers to the Celsius temperature at which a refractory conical sample can resist high temperature without softening and melting without load. However, it is not possible to fully describe refractory materials only by the definition of refractoriness, and 1580°C is not absolute. It is now defined as a material whose physical and chemical properties allow it to be used in a high temperature environment is called a refractory material. Refractory materials are widely used in metallurgy, chemical industry, petroleum, machinery manufacturing, silicate, power and other industrial fields, and are used in the largest amount in the metallurgica...

AI Technical Summary

Problems solved by technology

However, it is not possible to fully describe refractory materials only by the definition of refractoriness. 1580°C is not absolute.