Method for preparing high-strength fired bricks through adoption of diatomite

A diatomite, high-strength technology, applied in the field of sintered bricks, can solve the problems of easy cracking, poor shrinkage resistance, and heavy sintered bricks, and achieves the effects of strong dispersion ability, low breakage rate, and good thermal insulation effect.

Inactive Publication Date: 2018-02-16
望江县中山新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention proposes a method for preparing high-strength sintered bricks by using diatomite. According to the concept of new environmental protection promoted by the state, the invention uses diatomite to produce sintered bricks that meet the national standards, and solves the problem of high diatomite content. Sintered bricks have the disadvantages of heavy weight, easy cracking, poor shrinkage resistance, and breakage rate, and have strong promotion and application value

Method used

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  • Method for preparing high-strength fired bricks through adoption of diatomite
  • Method for preparing high-strength fired bricks through adoption of diatomite

Examples

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Effect test

Embodiment 1

[0021] A method for preparing high-strength sintered bricks by using diatomite, comprising the steps of:

[0022] (1) Mix waste brick powder, diatomaceous earth, polystyrene particles, and water, stir at a temperature of 92°C, and filter with plates and frames to obtain wet materials;

[0023] (2) Mix polyethylene wax, carbonized bagasse, montmorillonite, and ammonium persulfate evenly, adjust the temperature to 131°C, add acrylic acid, stir, add water and mix evenly, adjust the system to be alkaline with sodium hydroxide, and send it into Grind evenly in a crucible, send it into a carbonization furnace, heat up to 265°C under nitrogen protection, keep it warm, cool down to room temperature, and pulverize to obtain a montmorillonite composite;

[0024] (3) Add montmorillonite compound, alkali slag, red mud, and iron ore tailings to the wet material, mix evenly, press into bricks, dry, and sinter to obtain high-strength sintered bricks.

Embodiment 2

[0026] A method for preparing high-strength sintered bricks by using diatomite, comprising the steps of:

[0027] (1) Mix 30 parts of waste brick powder, 25 parts of diatomaceous earth, 5 parts of polystyrene particles and 140 parts of water in parts by weight, stir at 85° C. for 2 hours, and filter with plate and frame to obtain wet material;

[0028] The thermal conductivity of the polystyrene particles is 0.02w / m.k, the tensile strength is 67MPa, and the heat capacity is 1.15kJ / (kg·K);

[0029] (2) Mix 80 parts of polyethylene wax, 5 parts of carbonized bagasse, 18 parts of montmorillonite, and 0.1 part of ammonium persulfate in parts by weight, adjust the temperature to 135°C, add 2 parts of acrylic acid, stir for 4 hours, and add 200 parts Mix water evenly, adjust the pH of the system to 7.5 with sodium hydroxide, send it into a crucible, grind it evenly, send it into a carbonization furnace, raise the temperature to 240°C for 25 minutes under the protection of nitrogen, ...

Embodiment 3

[0033] A method for preparing high-strength sintered bricks by using diatomite, comprising the steps of:

[0034] (1) Mix 60 parts of waste brick powder, 15 parts of diatomaceous earth, 12 parts of polystyrene particles and 100 parts of water by weight, stir at 98°C for 1 hour, and filter with plate and frame to obtain wet material;

[0035] The thermal conductivity of the polystyrene particles is 0.04w / m.k, the tensile strength is 62MPa, and the heat capacity is 1.25kJ / (kg·K);

[0036] (2) Mix 50 parts of polyethylene wax, 14 parts of carbonized bagasse, 10 parts of montmorillonite, and 0.2 parts of ammonium persulfate in parts by weight, adjust the temperature to 125°C, add 6 parts of acrylic acid, stir for 2 hours, and add 400 parts Mix water evenly, use sodium hydroxide to adjust the pH of the system to 7.2, put it into a crucible, grind it evenly, put it into a carbonization furnace, raise the temperature to 270°C for 15 minutes under the protection of nitrogen, cool down...

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Abstract

The invention discloses a method for preparing high-strength fired bricks through adoption of diatomite. The method comprises the following steps: mixing waste brick powder, diatomite, polystyrene particles and water, performing stirring at 85-98 DEG C, and performing frame-and-plate filtration to obtain a wet material; uniformly mixing polyethylene wax, carbonized bagasse, montmorillonite and ammonium persulfate, adjusting the temperature to be 125-135 DEG C, adding acrylic acid, performing stirring, adding water, performing uniform mixing, adjusting the system to be alkaline with sodium hydroxide, sending the obtained product to a crucible, performing uniform grinding, sending the obtained product to a carbonization furnace, raising the temperature to 240-270 DEG C for thermal insulationin the protection of nitrogen, reducing the temperature to the room temperature, and performing pulverization to obtain a montmorillonite compound; and adding the montmorillonite compound, alkaline residue, red mud and diatomite to the wet material, performing uniform mixing, compacting the obtained material to obtain adobe, and drying and firing the adobe to obtain high-strength fired bricks.

Description

technical field [0001] The invention relates to the technical field of sintered bricks, in particular to a method for preparing high-strength sintered bricks by using diatomite. Background technique [0002] The main raw material of existing ordinary clay bricks is silty or sandy clay. In addition to clay, shale, coal gangue, fly ash, etc. can also be used as raw materials to manufacture non-clay sintered insulation bricks. The chemical composition is similar, but The cost price of the above components is high, resulting in high cost of the finally obtained non-clay sintered insulation brick. [0003] At present, in industrial kilns, diatomite bricks have good thermal insulation performance, but low strength, poor appearance quality, high breakage rate during transportation and use, and cannot be effectively utilized, which needs to be solved urgently. Contents of the invention [0004] The invention proposes a method for preparing high-strength sintered bricks by using d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/08C04B38/06C04B33/132C04B33/04C04B33/13
CPCC04B33/04C04B33/1305C04B33/131C04B33/132C04B33/1322C04B33/1324C04B38/0675C04B38/08C04B2235/77C04B2235/96C04B2235/9607C04B38/0067Y02P40/60
Inventor 曹结海
Owner 望江县中山新型建材有限公司
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