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Refractory brick containing alumina homogenized material and preparation method thereof

A technology for homogenizing materials and refractory bricks, applied in the field of refractory materials, can solve the problems of aggravating and reducing the thermal insulation effect of refractory materials, and short service life of refractory bricks.

Inactive Publication Date: 2018-05-08
HENAN ZHILIAN HUANYU INTPROP OPERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, this refractory brick has a short service life and cannot be reused.
In addition, due to the large size of pores in traditional refractory aggregates, the pore diameters are mostly at the millimeter level, so when the material is used in a high temperature environment, due to the intensification of radiation heat transfer and convective heat transfer through the gas in the pores, the refractory material will The thermal conductivity of the refractory material increases, which in turn reduces the heat insulation effect of the refractory material, increases the loss of heat energy, and leads to an increase in energy costs.

Method used

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  • Refractory brick containing alumina homogenized material and preparation method thereof
  • Refractory brick containing alumina homogenized material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] This embodiment provides a refractory brick containing bauxite homogenizing material, which includes the following raw materials in mass percentage: 31.5% of andalusite aggregate, 15% of small coal gangue particles, 10% of magnesia, and 20% of bauxite homogenizing material %, high alumina corundum powder 17%, magnesium chloride hexahydrate 0.5%, composite binder 1%, pulp water 5%.

[0023] Wherein, the composite binder is composed of phosphate aqueous solution and silica sol with a mass ratio of 2:1; the particle size of the andalusite aggregate is 3 mm to 4 mm; the particle size of the small coal gangue particles is 0 mm to 1 mm; the particle size of the magnesia is less than 0.074 mm, the particle size of the alumina homogenized material is less than 0.074 mm; the particle size of the high alumina corundum powder is less than 0.043 mm. The chemical composition of each raw material is shown in Table 1.

[0024] Table 1, the main chemical composition of each raw materi...

Embodiment 2

[0030] This embodiment provides a refractory brick containing bauxite homogenized material, which includes the following raw materials in mass percentages: 24% andalusite aggregate, 17% small coal gangue particles, 13% magnesia, 20% bauxite homogenized material %, high alumina corundum powder 15%, magnesium chloride hexahydrate 0.5%, composite binder 1%, pulp water 9.5%. Wherein, the composite binder is composed of phosphate aqueous solution and silica sol with a mass ratio of 3:1; the particle size of the andalusite aggregate is 3 mm to 4 mm; the particle size of the small coal gangue particles is 0 mm to 1 mm; the particle size of the magnesia is less than 0.074 mm, the particle size of the alumina homogenized material is less than 0.074 mm; the particle size of the high alumina corundum powder is less than 0.043 mm.

[0031] The preparation method of the refractory brick containing alumina homogenizing material described in this embodiment is roughly the same as the prepara...

Embodiment 3

[0034] This embodiment provides a refractory brick containing bauxite homogenized material, 27% of andalusite aggregate, 14.5% of small coal gangue particles, 13% of magnesia, 22.5% of bauxite homogenized material, 15% of high alumina corundum micropowder, Magnesia clay 1%, composite binder 2%, pulp water 5%.

[0035] Wherein, the composite binder is composed of phosphate aqueous solution and silica sol with a mass ratio of 3:1; the particle size of the andalusite aggregate is 3 mm to 4 mm; the particle size of the small coal gangue particles is 0 mm to 1 mm; the particle size of the magnesia is less than 0.074 mm, the particle size of the alumina homogenized material is less than 0.074 mm; the particle size of the high alumina corundum powder is less than 0.043 mm.

[0036] The preparation method of the refractory brick containing alumina homogenizing material described in this embodiment is the same as that in Example 1.

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Abstract

The invention provides a refractory brick containing an alumina homogenized material. The refractory brick is prepared from 22% to 31.5% by mass of andalusite aggregates, 15% to 28% by mass of coal gangue small particles, 10% to 15% by mass of magnesia, 20% to 30% of an alumina homogenized material, 17% to 26.5% of high-alumina corundum powder, 0.5% to 2% of a magnesium calcining aid, 1% to 3% ofa composite binder and the balance of liquid paper pulp. The refractory brick containing the alumina homogenized material has a reasonable formula, high corrosion resistance, good dimensional stability and high refractoriness under load. The invention also provides a preparation method of the refractory brick containing the alumina homogenized material. The preparation method has simple processesand is easy to industrialize.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a refractory brick containing bauxite homogenized material and a preparation method thereof. Background technique [0002] Refractory materials are widely used in metallurgy, petrochemical, glass and other high-temperature industries due to their good corrosion resistance to high-temperature media and their thermal insulation properties. As my country's emphasis on energy saving and consumption reduction continues to increase, more research and development has been done on lightweight refractory materials with good thermal insulation effects. Unshaped refractory materials have received special attention due to their advantages of convenient construction, low production cost, and good overall structure of the lining, among which refractory castables are the most widely used. [0003] Most of the existing refractory bricks are sticky heat-insulating refrac...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/3217C04B2235/3418C04B2235/3427C04B2235/444C04B2235/447C04B2235/77C04B2235/96
Inventor 张微微计富宝吉飞虎
Owner HENAN ZHILIAN HUANYU INTPROP OPERATION CO LTD