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A kind of anti-skinning prefabricated brick

A technology of prefabricated bricks and anti-skinning, which is applied in the field of refractory materials in the building materials industry, and can solve problems such as easy skinning on the side walls of pipes

Active Publication Date: 2016-02-10
长兴兴鹰新型耐火建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is to provide a formula and preparation method of anti-skinning prefabricated bricks, which solves the problem of easy skinning on the side wall of the pipeline

Method used

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  • A kind of anti-skinning prefabricated brick
  • A kind of anti-skinning prefabricated brick
  • A kind of anti-skinning prefabricated brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A formula for anti-skinning prefabricated bricks, the anti-skinning prefabricated bricks include the following components and the mass percentage of each component is: magnesia-alumina spinel 55%, silicon carbide 10%, porcelain powder 12%, mullite 8% stone modified micropowder, 5% silica micropowder, 1.2% fused magnesia powder, 8.5% high alumina cement and 0.3% dispersant.

[0028] Al in anti-skinning prefabricated bricks 2 o 3 The content is less than or equal to 40%, SiO 2 The content is less than or equal to 37%. Mullite modified micropowder includes mullite ore powder, natural sintered mullite, artificially synthesized mullite and kaolin sintered mullite, mullite ore powder, natural sintered mullite, Synthetic mullite and kaolin sintered mullite contains metakaolin, and metakaolin includes five-coordinated activated aluminum. The dispersant is Na 5 P 3 o 10 or Na 6 o 18 P 6 .

[0029] The particle size of magnesium aluminum spinel is 0-8mm, the particle si...

Embodiment 2

[0038] The difference from Example 1 is that the anti-skinning prefabricated brick of this example includes the following components and the mass percentage of each component is: magnesia-alumina spinel 71%, silicon carbide 5%, porcelain powder 8%, mullite Stone modified micropowder 5%, silica micropowder 3%, fused magnesia powder 0.8%, high alumina cement 7% and dispersant 0.2%.

[0039] The anti-skinning prefabricated brick produced in this embodiment has a compressive strength of 92.30 MPa and an anti-demolition strength of 18.63 MPa in an environment of 110°C. The anti-skinning prefabricated brick produced in this embodiment has a compressive strength of 112.30 MPa and an anti-demolition strength of 25.63 MPa in an environment of 1100°C.

Embodiment 3

[0041] The difference from Example 1 is that the anti-skinning prefabricated brick of this example includes the following components and the mass percentage of each component is: magnesia-alumina spinel 40%, silicon carbide 15%, porcelain powder 15%, mullite 10% stone modified micropowder, 8% silica micropowder, 1.5% fused magnesia powder, 10% high alumina cement and 0.5% dispersant.

[0042] The anti-skinning prefabricated brick produced in this embodiment has a compressive strength of 83.30 MPa and an anti-demolition strength of 16.73 MPa in an environment of 110°C. The anti-skinning prefabricated brick produced in this embodiment has a compressive strength of 94.23MPa and an anti-demolition strength of 19.31MPa in an environment of 1100°C.

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Abstract

The invention relates to an anti-skinning precast brick formula and a preparation method thereof, belonging to the field of refractory materials for construction material industry and solving the problem of high skinning tendency on the side wall of the pipeline. The anti-skinning precast brick comprises the following components in percentage by mass: 40-71% of magnesia alumina spinel with the particle size of 8mm below, 5-15% of silicon carbide with the particle size of 5mm below, 8-15% of porcelain powder with the particle size of 0.088mm below, 5-10% of mullite modified micropowder with the particle size of 0.044mm below, 3-8% of silicon micropowder, 0.8-1.5% of fused magnesite powder with the particle size of 0.088mm below, 7-10% of high-alumina cement and 0.2-0.5% of dispersing agent.

Description

technical field [0001] The invention relates to a formula and a preparation method of an anti-skinning prefabricated brick, belonging to the field of refractory materials used in the building material industry. Background technique [0002] The tail smoke chamber of the cement precalciner kiln is the part connecting the rotary kiln and the calciner. It is the passage for the hot flue gas in the rotary kiln to enter the preheater and the calciner, and it is also the passage for the high-temperature raw material from the lowest preheater to enter the rotary kiln. Existing various rotary kiln tail smoke chambers will have the problem of cement raw material crusting and clogging, that is, the raw material will appear liquid phase prematurely through the high temperature (about 850°C) of the kiln tail smoke chamber cavity, and in the kiln tail smoke chamber Layers are adhered to the feeding slope, which is called crust, and in severe cases, it will cause blockage, especially the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/622
Inventor 王强许高山国强
Owner 长兴兴鹰新型耐火建材有限公司
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