Alumina-magnesia spinel refractory material and preparation method thereof
A technology of aluminum-magnesium spinel and refractory materials, applied in the field of refractory materials, can solve problems such as inability to fully describe refractory materials, and achieve the effects of light weight, good oxidation resistance, and improved high temperature resistance
Inactive Publication Date: 2015-10-14
MAANSHAN JINSHENG IND DESIGN
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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.
Method used
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Experimental program
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Embodiment 1
[0019] A kind of aluminum-magnesium spinel refractory material, it is made up of the following raw materials of weight part:
[0020] Aluminum magnesium spinel 80, calcium stearate 1.5, polyethylene glycol 400 8, phenolic resin 10, sisal fiber 12, 2-mercaptobenzimidazole 0.6, tetraethyl orthosilicate 30, 7mol / l nitric acid solution 3. Glacial acetic acid 2, casein 0.7, polypropylene 2, naphthenic acid soap 0.2, sodium fluorosilicate 1.3.
[0021] A preparation method of Al-Mg spinel refractory material, comprising the following steps:
[0022] (1) Add calcium stearate to polyethylene glycol 400, heat to 80°C, keep warm and stir for 10 minutes, add casein, stir to room temperature, and obtain casein alcohol solution;
[0023] (2) Add sisal fiber to 5% potassium bisulfite solution and soak for 4 hours, take it out and dry it, add nitric acid solution, stir and mix for 30 minutes, add edible alkali, adjust PH to neutral, add cheese Vegetarian alcohol solution, stir evenly to ob...
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Abstract
The invention discloses an alumina-magnesia spinel refractory material. The alumina-magnesia spinel refractory material is prepared from 71-80 parts by weight of alumina-magnesia spinel, 1-1.5 parts by weight of calcium stearate, 6-8 parts by weight of polyethylene glycol 400, 4-10 parts by weight of phenolic resin, 10-12 parts by weight of sisal hemp fibers, 0.6-1 part by weight of 2-mercaptobenzimidazole, 26-30 parts by weight of ethyl orthosilicate, 3-4 parts by weight of a nitric acid solution with a concentration of 5-7mol / l, 2-3 parts by weight of glacial acetic acid, 0.7-1 part by weight of casein, 2-3 parts by weight of polypropylene, 0.1-0.2 parts by weight of naphthenic soap and 1-1.3 parts by weight of sodium fluosilicate. The ethyl orthosilicate is hydrolyzed to form silanol sol in the presence of glacial acetic acid as a catalyst, the silanol sol and a fiber emulsion are mixed, the solvent is evaporated so that a compound containing carbon and silicon is obtained, and the compound is subjected to high temperature carbonization so that a carbon-silicon compound assistant is obtained, wherein the fiber emulsion provides a carbon source. The carbon-silicon compound assistant has stable chemical performances, a high heat conduction coefficient, a small thermal expansion coefficient, heat shock resistance, light weight and high strength.
Description
technical field [0001] The invention relates to a refractory material, in particular to an aluminum-magnesium spinel 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 metallurgical indust...
Claims
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IPC IPC(8): C04B35/66
Inventor 吴铭
Owner MAANSHAN JINSHENG IND DESIGN