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Baking-free brick made of industrial caustic sludge and making method of baking-free brick

An industrial alkali and non-burning brick technology, applied in the fields of municipal engineering and construction engineering, can solve the problems of weathering resistance, reduced wear resistance, large amount of raw materials, incomplete and insufficient, etc., so as to reduce CO2 emissions, reduce environmental pollution, reduce The effect of construction cost

Pending Publication Date: 2019-11-26
刘荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) Strong acidic substances such as hydrogen peroxide are used, the acid value is high, the foaming gas is easily generated too quickly, the bubble diameter is large, the bubble wall is thin, the defoaming is fast, the stability is not good, it is not completely sufficient, and the bottom foam is crisp and Powder;
[0007] (2) Low strength, easy to crack and absorb water, and low waterproof ability;
[0008] (3) Decreased weathering resistance and wear resistance;
[0009] (4) The specific gravity is too large, the amount of raw materials required is large, and the immersion resistance is not good; this seriously restricts the wide use in the construction industry

Method used

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  • Baking-free brick made of industrial caustic sludge and making method of baking-free brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1 A kind of non-fired brick produced by utilizing industrial alkali slag

[0051] The non-burning brick produced by using industrial alkali slag of the present invention uses the alkaline waste slag of a local soda ash production enterprise to be pressed into a non-burning brick without sintering through appropriate proportion matching.

[0052] A non-burning brick produced by utilizing industrial alkali slag of the present invention, the required materials, by weight, include: 60 parts of alkali slag, 15 parts of cement, 15 parts of yellow sand, 0.5 part of water reducing agent, 2.5 parts of Parts of sludge, 2.5 parts of construction waste, 2 parts of fly ash, 3 parts of slag, 0.3 parts of colorant and 10-12 parts of water;

[0053] The alkali slag is the waste alkali slag produced in the production process of a soda ash production enterprise;

[0054] The composition and proportion of the spent alkali residue are: CaCO3: 50-70%, Ca(OH)2: 3-5%, CaO: 6.3-10%...

Embodiment 2

[0061] Embodiment 2 A kind of preparation method of the unfired brick that utilizes industrial alkali slag to produce comprises the following steps:

[0062] (1) Pretreatment: Weigh industrial waste alkali slag according to parts by weight, and carry out pretreatment;

[0063] The alkali slag is the waste alkali slag produced in the production process of a soda ash production enterprise;

[0064] The composition and proportion of the spent alkali residue are: CaCO3: 50-70%, Ca(OH)2: 3-5%, CaO: 6.3-10%, CaSO4: 2.5-5%, CaCL2: 8.5-10% , SiO2: 5-7%, the balance is trace metal compounds;

[0065] The trace metal compounds include, for example, aluminum oxide and iron oxide.

[0066] (2) Mixing: add cement, yellow sand, sludge, construction waste, and mix;

[0067] (3) Add water and stir: fully stir evenly to obtain a mixture;

[0068] (4) Compression molding: stack the above mixture at room temperature for 15 minutes, and then press molding;

[0069] (5) Curing: natural curing...

Embodiment 3

[0070] Embodiment 3 A kind of preparation method of the unfired brick that utilizes industrial alkali slag to produce, comprises the following steps:

[0071] (1) Pretreatment

[0072] Take raw materials by weight as follows:

[0073] 60 parts of alkali slag, 6 parts of desalted coal tar, 15 parts of cement, 15 parts of yellow sand, 0.5 parts of water reducing agent, 2.5 parts of sludge, 2.5 parts of construction waste, 2 parts of fly ash, 3 parts slag, 0.6 parts of sodium acetate, 0.3 parts of colorant and 10-12 parts of water.

[0074] The construction waste contains 20% slag, 10-15% waste concrete, 55.6-60.5% waste masonry, 5.5-8.0% construction glue, construction paint, and construction paint. The amount is other waste;

[0075] The fly ash has a density of 2.3kg / m 3 , the thermal conductivity is 9, the compressive strength is 39MPa, and the sound absorption coefficient is 8; the content of Al2O3 is ≥11.2%, the content of FeO is 5.2-10%, the content of Fe2O3 is 3.5-5.5...

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Abstract

The invention provides a baking-free brick made of industrial caustic sludge. The baking-free brick comprises the following components in parts by weight: 60 parts of caustic sludge, 15 parts of cement, 15 parts of yellow sand, 0.5 part of a water reduction agent, 2.5 parts of sludge, 2.5 parts of building wastes, 2 parts of coal ash, 3 parts of mineral slag and 0.3 part of a pigment and water. The making method comprises the following steps: performing mixing, adding cement, sludge and building wastes into pretreated caustic sludge, keeping the pressure to 0.8MPa and the temperature to 35 DEGC, adding absolute ethyl alcohol, performing mixing at a rotation speed of 1800r / min, increasing the temperature to 142 DEG C at a speed of 8 DEG C / min, keeping the temperature for 10 minutes, addingthe yellow sand, reducing the temperature to 85 DEG C, performing drying for 15 hours, and performing calcining for 1-2 hours. The baking-free brick provided by the invention is nontoxic, harmless, good in weather resistance, good in wearing resistance, good in permeation resistance and not liable to crack, the weather resistance is improved by 12.8%, and the strength is up to 10-40MPa.

Description

technical field [0001] The invention belongs to the technical fields of municipal engineering and construction engineering, and relates to a non-burning brick produced by using industrial alkali slag, in particular to a material formula and a preparation method of the non-burning brick produced by using industrial alkali slag. Background technique [0002] Soda slag is the solid waste of soda ash produced by domestic ammonia subtraction, which is produced in large quantities in the soda ash production process. According to estimates, for every 1 ton of soda ash produced, about 0.2-0.3 tons of solid waste residue will be removed. Taking an alkali plant with an annual output of 600,000 tons as an example, about 200,000 tons of waste will be discharged every year. [0003] In the past ten years at home and abroad, through the experimental research of relevant experts and enterprises, it is possible to use fly ash, slag and chemical activators to produce masonry materials with s...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/02C04B111/20C04B111/21C04B111/27C04B111/34
CPCC04B28/02C04B28/04C04B2111/00017C04B2111/2038C04B2111/21C04B2111/27C04B2111/343C04B2201/50C04B18/0427C04B14/06C04B18/0418C04B18/16C04B18/08C04B18/141C04B2103/302C04B2103/54C04B24/36C04B24/04
Inventor 刘荣
Owner 刘荣
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