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Special refractory brick for chimney and preparation technology thereof

A technology of refractory bricks and chimneys, applied in the field of refractory materials, can solve the problems of aging and cracking of bricks, potential safety hazards, high temperature difference of chimneys, etc., and achieve the effects of high raw material bonding force, enhanced surface compactness, and low thermal expansion and cold contraction rates

Inactive Publication Date: 2017-05-10
ANHUI YUANTONG HEATING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, large-scale heating plants exhaust smoke through the chimney. Due to the high temperature difference between the inside and outside of the chimney, the bricks used to build the chimney will age and crack in the long run, which will affect the use of the chimney and even cause certain safety hazards.

Method used

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  • Special refractory brick for chimney and preparation technology thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0017] Special refractory bricks for chimneys, the refractory bricks are made of the following raw materials in parts by weight:

[0018] 22 parts of ordinary Portland cement, 28 parts of quartz sand, 18 parts of vermiculite, 10 parts of magnesium chloride, 10 parts of walnut shell powder, 9 parts of aluminum silicate fiber cotton, 18 parts of attapulgite, 16 parts of sewer sludge, hexagonal crystal system 12 parts of silicon nitride, 12 parts of vitrified microbeads, 12 parts of gypsum, 5 parts of binder, 5 parts of additives, 25 parts of hydrogen peroxide.

[0019] The binder is made of the following raw materials in parts by weight: 9 parts of acrylic emulsion, 2.8 parts of polyether 210, 1.2 parts of hydroxypropyl methylcellulose, 0.6 part of liensinine, 0.6 part of guar gum ether, glyceraldehyde -0.6 parts of 3-phosphoric acid; the preparation method is: heat the acrylic emulsion to 80-120°C, then mix the remaining raw materials into the acrylic emulsion, stir for 30 minu...

Embodiment 2

[0026] Special refractory bricks for chimneys, the refractory bricks are made of the following raw materials in parts by weight:

[0027] 20 parts of ordinary Portland cement, 25 parts of quartz sand, 15 parts of vermiculite, 8 parts of magnesium chloride, 8 parts of walnut shell powder, 8 parts of aluminum silicate fiber cotton, 15 parts of attapulgite, 13 parts of sewer sludge, hexagonal crystal system 10 parts of silicon nitride, 10 parts of vitrified microbeads, 10 parts of gypsum, 4 parts of binder, 4 parts of additives, 22 parts of hydrogen peroxide.

[0028] The binder is made of the following raw materials in parts by weight: 7.5 parts of acrylic emulsion, 2.5 parts of polyether 210, 1 part of hydroxypropyl methylcellulose, 0.5 part of liensinine, 0.5 part of guar gum ether, glyceraldehyde -0.5 parts of 3-phosphoric acid; the preparation method is: heat the acrylic emulsion to 80-120°C, then mix the remaining raw materials into the acrylic emulsion, stir for 30 minutes...

Embodiment 3

[0035] Special refractory bricks for chimneys, the refractory bricks are made of the following raw materials in parts by weight:

[0036] 24 parts of ordinary Portland cement, 30 parts of quartz sand, 20 parts of vermiculite, 12 parts of magnesium chloride, 12 parts of walnut shell powder, 10 parts of aluminum silicate fiber cotton, 20 parts of attapulgite, 19 parts of sewer sludge, hexagonal crystal system 14 parts of silicon nitride, 14 parts of vitrified microspheres, 14 parts of gypsum, 6 parts of binder, 6 parts of additives, 28 parts of hydrogen peroxide.

[0037] The binder is made of the following raw materials in parts by weight: 11 parts of acrylic emulsion, 3 parts of polyether 210, 1.5 parts of hydroxypropyl methylcellulose, 0.8 part of liensinine, 0.8 part of guar gum ether, glyceraldehyde -0.8 parts of 3-phosphoric acid; the preparation method is: heat the acrylic emulsion to 80-120°C, then mix the remaining raw materials into the acrylic emulsion, stir for 30 mi...

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Abstract

The invention relates to the technical field of refractory materials, in particular to a special refractory brick for a chimney. The special refractory brick is prepared from the following raw materials in parts by weight: 20 to 24 parts of ordinary Portland cement, 25 to 30 parts of quartz sand, 15 to 20 parts of vermiculite, 8 to 12 parts of magnesium chloride, 8 to 12 parts of walnut shell powder, 8 to 10 parts of aluminum silicate fiber cotton, 15 to 20 parts of attapulgite, 13 to 19 parts of sewer silt, 10 to 14 parts of hexagonal silicon nitride, 10 to 14 parts of vitrified microsphere, 10 to 14 parts of gypsum, 4 to 6 parts of adhesive, 4 to 6 parts of additive, and 22 to 28 parts of hydrogen peroxide. The special refractory brick has the advantages that the heat expansion and cold shrinkage rate is low, the bonding force of the raw materials is large, the surface compactness is improved by the immersion of carboxylic acid solution, and the easiness in leakage of fume and impurities into the brick is avoided.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a special refractory brick for a chimney and a preparation process thereof. Background technique [0002] With the improvement of people's living standards, people's demand for indoor heating is increasing. At present, large-scale heating plant areas will exhaust smoke through chimneys. Due to the high temperature difference between the inside and outside of the chimney, the bricks used to build the chimney will age and crack in the long run, which will affect the use of the chimney and even cause certain safety hazards. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a special refractory brick for chimney and its preparation process. [0004] The technical problem to be solved by the present invention adopts the following technical solutions to realize: [0005] Special refractory bricks for chimneys, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/96C04B2235/9607
Inventor 李伟李长安
Owner ANHUI YUANTONG HEATING TECH CO LTD