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A kind of coal gangue hollow brick forming method

A molding method, coal gangue technology, applied to ceramic products, other household utensils, clay products, etc., can solve the problems of low brick strength, peculiar smell, damage, etc., achieve high strength, remove peculiar smell, and increase the effect of tensile strength

Active Publication Date: 2022-07-12
合肥长丰明华建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing coal gangue hollow bricks will produce peculiar smell during sintering, and the strength of the bricks is low, and the bricks are easily damaged when they are molded and demolded

Method used

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  • A kind of coal gangue hollow brick forming method
  • A kind of coal gangue hollow brick forming method
  • A kind of coal gangue hollow brick forming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] like figure 1 As shown, a hollow coal gangue brick is prepared from the following raw materials in parts by weight: 80 parts of coal gangue, 20 parts of medium and fine sand, 20 parts of straw powder, 4 parts of talcum powder, 15 parts of bamboo fiber, water-retaining thickening material 5 parts, 10 parts of sodium carbonate, 0.5 part of water reducing agent, appropriate amount of water, the diameter of the medium and fine sand is 1.5mm.

[0042] The straw powder is a mixed product of corn straw and wheat straw.

[0043] A method for forming coal gangue hollow bricks, comprising the following steps:

[0044] S1, crushing and screening, put the coal gangue into the crusher for crushing, and use the vibrating screen to screen to obtain materials with a particle diameter of less than 2mm;

[0045]S2. Stir and mix, put the coal gangue, medium-fine sand, straw powder, bamboo fiber, and calcium carbonate into the mixer for dry mixing for 180s. The medium-fine sand effective...

Embodiment 2

[0050] like figure 1 As shown, a hollow coal gangue brick is prepared from the following raw materials in parts by weight: 100 parts of coal gangue, 30 parts of medium and fine sand, 25 parts of straw powder, 10 parts of talcum powder, 20 parts of bamboo fiber, water-retaining thickening material 10 parts, 15 parts of sodium carbonate, 1.5 parts of water reducing agent, appropriate amount of water, the diameter of the medium and fine sand is 2mm.

[0051] The straw powder is a mixed product of corn straw and wheat straw, and the straw powder is easy to obtain and low in cost, and can reduce the production cost.

[0052] A method for forming coal gangue hollow bricks, comprising the following steps:

[0053] S1, crushing and screening, put the coal gangue into the crusher for crushing, and use the vibrating screen to screen to obtain materials with a particle diameter of less than 2mm;

[0054] S2. Stir and mix, put the coal gangue, medium and fine sand, straw powder, bamboo ...

Embodiment 3

[0060] like figure 1 As shown, a hollow coal gangue brick is prepared from the following raw materials in parts by weight: 90 parts of coal gangue, 25 parts of medium and fine sand, 23 parts of straw powder, 8 parts of talcum powder, 17 parts of bamboo fiber, water-retaining thickening material 8 parts, 12 parts of sodium carbonate, 1 part of water reducing agent, appropriate amount of water, the diameter of the medium and fine sand is 2mm.

[0061] The water-retaining and thickening material is at least one of methyl cellulose, hydroxypropyl methyl cellulose and hydroxyethyl methyl cellulose. By adding methyl cellulose, hydroxypropyl methyl cellulose and hydroxyethyl At least one substance in the base methyl cellulose is used as a water-retaining and thickening material to increase the viscosity of the raw material mixture and ensure the molding quality of the coal gangue hollow brick.

[0062] The straw powder is a mixed product of corn straw and wheat straw.

[0063] A me...

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Abstract

The invention relates to the technical field of processing coal gangue hollow bricks, and discloses a coal gangue hollow brick, which is prepared from the following raw materials in parts by weight: 80-100 parts of coal gangue, 20-30 parts of medium and fine sand, and 20-25 parts of straw powder , 4-10 parts of talcum powder, 15-20 parts of bamboo fiber, 5-10 parts of water-retaining thickening material, 10-15 parts of sodium carbonate, 0.5-1.5 parts of water reducing agent, an appropriate amount of water, and the diameter of the medium and fine sand is 1.5-2mm; a method for forming hollow coal gangue bricks, comprising the following steps: S1, crushing and screening, S2, stirring and mixing, S3, sealing and aging, S4, making brick blanks, S5, drying and sintering, and adding straw powder to the mixture to make During sintering, the organic matter in the bricks burns with the carbonized straw powder at the same time, which can remove the odor. The sodium carbonate is easily soluble in water, which makes the mixture alkaline, which can alkalize the surface of the straw powder, so that the straw powder can be mixed with the coal gangue raw material evenly. , Improve the tightness of the bricks, play a good demoulding effect, and improve the quality of the bricks.

Description

technical field [0001] The invention relates to the technical field of processing coal gangue hollow bricks, in particular to a method for forming coal gangue hollow bricks. Background technique [0002] The main component of coal gangue brick is coal gangue. Coal gangue is a solid waste discharged from the coal mining process and coal washing process. Its main components are Al2O3, SiO2, and also contain varying amounts of Fe2O3, MgO, Na2O, K2O, P2O5, SO3 and trace rare elements (gallium, vanadium, titanium, cobalt). It is often used in non-load-bearing parts, the porosity is equal to or greater than 35%, and the empty bricks with large size and small number are called hollow bricks. Hollow bricks are divided into cement hollow bricks, clay hollow bricks, and shale hollow bricks. Hollow brick is the main wall material commonly used in the construction industry. Due to its advantages of light weight and low consumption of raw materials, it has become the first product rec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/13C04B38/06B28B3/26
CPCC04B33/1324C04B33/13C04B33/1305C04B35/636C04B38/0675B28B3/26C04B2235/5212C04B2235/3201Y02P40/60
Inventor 顾太明顾赵高杜杜胜
Owner 合肥长丰明华建材有限公司