Thermal shock resistant refractory brick

Abstract

The invention relates to a thermal shock resistant brick. The thermal shock resistant brick is prepared from the following materials in parts by mass: 48 to 75 parts of mullite powder, 8 to 12 parts of silica powder, 18 to 24 parts of chromium-containing aluminum silicate fibers, 5 to 8 parts of sericite, 12 to 25 parts of filter mud, 2 to 4 parts of yellow dextrin, 7 to 8 parts of sintering aids, 15 parts of binders and 3 parts of carboxymethyl ammonium acrylate. The high temperature resistance, abrasion resistance, thermal shock stability, thermal conductivity, high temperature corrosion resistance and the like of a refractory material are improved, and the service life of the refractory material is prolonged.

Description

technical field

[0001] The invention relates to the technical field of materials, in particular to a refractory material. Background technique

[0002] Refractory materials refer to a class of inorganic non-metallic materials with a refractoriness of not less than 1500°C. The refractoriness refers to the temperature in Celsius at which a refractory conical sample can resist high temperature without softening and melting without a load. Refractory materials include natural ores and are manufactured according to certain industrial requirements. They have certain high-temperature mechanical properties and good volume stability, and are necessary materials for various high-temperature-resistant equipment. Refractory materials are widely used in chemical industry, petroleum, metallurgy, machinery manufacturing, power and other industrial fields, especially in the metallurgical industry, and play an irreplaceable important role in the development of high-temperature industrial pro...

Examples

Embodiment 1

[0017] A heat-shock-resistant refractory brick made of the following materials in parts by mass: 48 parts of mullite powder, 8 parts of silicon micropowder, 18 parts of chromium-containing aluminum silicate fiber, 5 parts of sericite, 12 parts of sugar factory filter mud, 2 parts of yellow dextrin, 7 parts of sintering aid, 15 parts of binder and 3 parts of ammonium carboxymethyl acrylate.

[0018] The binder is obtained by adding 3 parts by weight of magnesium chloride and 15 parts by weight of molasse into 80 parts by weight of ethyl silicate hydrolyzate.

[0019] The sintering aid is a mixture of Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide, and the mass fraction ratio between the Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide is It is 6.5:0.5.

[0020] The molar ratio of Rh, B and Si in the Rh-B-Si eutectic oxide is 5:42:20, and the molar ratio of Mn and Cu in the Mn-Cu eutectic oxide is 0.2:1.6. The melting point of the sintering aid is 900°C.

[0021] The prepared...

Embodiment 2

[0023] A heat-shock-resistant refractory brick made of the following materials in parts by mass: 65 parts of mullite powder, 10 parts of silicon micropowder, 22 parts of chromium-containing aluminum silicate fiber, 6 parts of sericite, 18 parts of sugar factory filter mud, 3 parts of yellow dextrin, 8 parts of sintering aid, 15 parts of binder and 4 parts of ammonium carboxymethyl acrylate.

[0024] The binder is obtained by adding 3 parts by weight of magnesium chloride and 15 parts by weight of molasse into 80 parts by weight of ethyl silicate hydrolyzate.

[0025] The sintering aid is a mixture of Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide, and the mass fraction ratio between the Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide is It is 6.7:0.75.

[0026] The molar ratio of Rh, B and Si in the Rh-B-Si eutectic oxide is 7:52:27, and the molar ratio of Mn and Cu in the Mn-Cu eutectic oxide is 0.25:1.9. The melting point of the sintering aid is 1000°C.

[0027] The prep...

Embodiment 3

[0029] A heat-shock-resistant refractory brick made of the following materials in parts by mass: 75 parts of mullite powder, 12 parts of silicon micropowder, 24 parts of chromium-containing aluminum silicate fiber, 8 parts of sericite, 25 parts of sugar factory filter mud, 4 parts of yellow dextrin, 8 parts of sintering aid, 15 parts of binder and 5 parts of carboxymethyl ammonium acrylate.

[0030] The binder is obtained by adding 3 parts by weight of magnesium chloride and 15 parts by weight of molasse into 80 parts by weight of ethyl silicate hydrolyzate.

[0031] The sintering aid is a mixture of Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide, and the mass fraction ratio between the Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide is It is 7:0.8.

[0032] The molar ratio of Rh, B and Si in the Rh-B-Si eutectic oxide is 10:62:37, and the molar ratio of Mn and Cu in the Mn-Cu eutectic oxide is 0.3:2.9. The melting point of the sintering aid is 1100°C.

[0033] The prepare...

technical field

[0001] The invention relates to the technical field of materials, in particular to a refractory material. Background technique

[0002] Refractory materials refer to a class of inorganic non-metallic materials with a refractoriness of not less than 1500°C. The refractoriness refers to the temperature in Celsius at which a refractory conical sample can resist high temperature without softening and melting without a load. Refractory materials include natural ores and are manufactured according to certain industrial requirements. They have certain high-temperature mechanical properties and good volume stability, and are necessary materials for various high-temperature-resistant equipment. Refractory materials are widely used in chemical industry, petroleum, metallurgy, machinery manufacturing, power and other industrial fields, especially in the metallurgical industry, and play an irreplaceable important role in the development of high-temperature industrial pro...

Examples

Embodiment 1

[0017] A heat-shock-resistant refractory brick made of the following materials in parts by mass: 48 parts of mullite powder, 8 parts of silicon micropowder, 18 parts of chromium-containing aluminum silicate fiber, 5 parts of sericite, 12 parts of sugar factory filter mud, 2 parts of yellow dextrin, 7 parts of sintering aid, 15 parts of binder and 3 parts of ammonium carboxymethyl acrylate.

[0018] The binder is obtained by adding 3 parts by weight of magnesium chloride and 15 parts by weight of molasse into 80 parts by weight of ethyl silicate hydrolyzate.

[0019] The sintering aid is a mixture of Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide, and the mass fraction ratio between the Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide is It is 6.5:0.5.

[0020] The molar ratio of Rh, B and Si in the Rh-B-Si eutectic oxide is 5:42:20, and the molar ratio of Mn and Cu in the Mn-Cu eutectic oxide is 0.2:1.6. The melting point of the sintering aid is 900°C.

[0021] The prepared...

Embodiment 2

[0023] A heat-shock-resistant refractory brick made of the following materials in parts by mass: 65 parts of mullite powder, 10 parts of silicon micropowder, 22 parts of chromium-containing aluminum silicate fiber, 6 parts of sericite, 18 parts of sugar factory filter mud, 3 parts of yellow dextrin, 8 parts of sintering aid, 15 parts of binder and 4 parts of ammonium carboxymethyl acrylate.

[0024] The binder is obtained by adding 3 parts by weight of magnesium chloride and 15 parts by weight of molasse into 80 parts by weight of ethyl silicate hydrolyzate.

[0025] The sintering aid is a mixture of Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide, and the mass fraction ratio between the Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide is It is 6.7:0.75.

[0026] The molar ratio of Rh, B and Si in the Rh-B-Si eutectic oxide is 7:52:27, and the molar ratio of Mn and Cu in the Mn-Cu eutectic oxide is 0.25:1.9. The melting point of the sintering aid is 1000°C.

[0027] The prep...

Embodiment 3

[0029] A heat-shock-resistant refractory brick made of the following materials in parts by mass: 75 parts of mullite powder, 12 parts of silicon micropowder, 24 parts of chromium-containing aluminum silicate fiber, 8 parts of sericite, 25 parts of sugar factory filter mud, 4 parts of yellow dextrin, 8 parts of sintering aid, 15 parts of binder and 5 parts of carboxymethyl ammonium acrylate.

[0030] The binder is obtained by adding 3 parts by weight of magnesium chloride and 15 parts by weight of molasse into 80 parts by weight of ethyl silicate hydrolyzate.

[0031] The sintering aid is a mixture of Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide, and the mass fraction ratio between the Rh-B-Si eutectic oxide and Mn-Cu eutectic oxide is It is 7:0.8.

[0032] The molar ratio of Rh, B and Si in the Rh-B-Si eutectic oxide is 10:62:37, and the molar ratio of Mn and Cu in the Mn-Cu eutectic oxide is 0.3:2.9. The melting point of the sintering aid is 1100°C.

[0033] The prepare...