Inorganic silicate heat insulating refractory and preparation method thereof

Abstract

The invention discloses an inorganic silicate heat insulating refractory and a preparation method thereof. The inorganic silicate heat insulating refractory comprises the following components in part by weight: 5-20 parts of attapulgite, 50-80 parts of meerschaum, 500-700 parts of water, 5-20 parts of ceramic fiber, 5-20 parts of bentonite, 5-20 parts of sodium sulfosuccinate, 5-20 parts of aluminum dihydrogen phosphate, 5-20 parts of sodium silicate, 1-10 parts of light magnesium carbonate, 1-10 parts of titanium oxide, 15-70 parts of expanded perlite, 5-20 parts of cement and 15-20 parts of sodium methyl silicate. The preparation method for the inorganic silicate heat insulating refractory comprises the following steps: stirring the water, the sodium sulfosuccinate and the ceramic fiber at the rotating speed of 20-30 rpm for 5-8 minutes; adding the meerschaum, stirring the mixture at the rotating speed of 50-70 rpm for 30-35 minutes and then adding the aluminum dihydrogen phosphate, the attapulgite, the bentonite, the sodium silicate, the light magnesium carbonate and the titanium oxide; and after 25 minutes, adding rest components and stirring for 10-15 minutes to obtain the required sizing.

Description

technical field [0001] The invention relates to a silicate refractory material, in particular to an inorganic silicate heat-insulating refractory material and a preparation method thereof. Background technique [0002] At present, organic heat-insulating refractory materials have poor incombustibility due to the organic material itself, and are easy to burn, so they cannot be guaranteed when used, and organic materials will release toxic gases after burning, which will bring harm to people's health . [0003] Existing inorganic heat-insulating refractory materials such as clay bricks, magnesia-chrome bricks, diatomite bricks, asbestos boards, etc. have limitations in service temperature, narrow range, or high material density, or high thermal conductivity, and the thermal insulation performance Poor, it is difficult to ensure the temperature and performance at the same time. [0004] Nowadays, due to the application requirements in high-temperature industries such as steel...

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Problems solved by technology

[0002] At present, organic heat-insulating refractory materials have poor incombustibility due to the organic material itself, and are easy to burn, so they cannot be guaranteed when used, and organic materials will release toxic gases after burning, which will bring harm to people's health.

[0003] Existing inorganic heat-insulating refractory materials such as clay bricks, magnesia-chrome bricks, diatomite bricks, asbestos boards, etc. may have limitations in use temperature, narrow range, or high material density, or high thermal conductivity, and the thermal insulation performance Poor, it is difficult to ensure the temperature and performance at the same time

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