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Gangue perforated brick and preparation method thereof

A technology of coal gangue and porous brick, which is applied in the field of coal gangue porous brick and its preparation, can solve the problems of low strength of coal gangue porous brick, can not meet engineering construction, and is not durable, and achieves superior weathering resistance, high strength, The effect of high service life

Inactive Publication Date: 2011-10-19
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the imperfection of the preparation process, the gangue porous bricks are not strong and durable, and cannot meet the needs of engineering construction.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] A method for preparing a coal gangue porous brick, comprising the steps of:

[0014] Step 1, taking 1-3 parts of shale, 1-3 parts of fly ash and 3-9 parts of coal gangue respectively in parts by weight, and crushing the shale and coal gangue until the particle size is less than 4mm;

[0015] Step 2. Send the crushed shale, coal gangue and fly ash into the mixer, mix and stir, add water during the mixing process, adjust the moisture content of the material to 12-13%, then take out the mixed material and place it for 72 hours or more;

[0016] Step 3. Send the material placed in step 2 into the mixer, add water with 0.5-1% of the weight of the material, and mix evenly;

[0017] Step 4. Send the mixed material in step 3 into the brick making machine, add water, adjust the moisture content of the material to 10-12%, and then make bricks;

[0018] Step 5. Send the finished brick into a drying kiln, and dry it for 28-34 hours at a temperature of 80-120°C;

[0019] Step 6. ...

Embodiment 1

[0022] A method for preparing a coal gangue porous brick, comprising the steps of:

[0023] Step 1, taking 1 part of shale, 1 part of fly ash and 3 parts of coal gangue respectively in parts by weight, and crushing the shale and coal gangue until the particle size is less than 4 mm;

[0024] Step 2. Send the crushed shale, coal gangue and fly ash into the mixer, mix and stir, add water during the mixing process, adjust the moisture content of the material to 12%, then take out the mixed material and place it for more than 72 hours ;

[0025] Step 3. Send the material placed in step 2 into the mixer, add 0.5% water by weight of the material, and mix evenly;

[0026] Step 4. Send the mixed material in step 3 into the brick making machine, add water, adjust the moisture content of the material to 10%, and then make bricks;

[0027] Step 5, send the adobe made into a drying kiln, and dry it for 34 hours at a temperature of 80°C;

[0028] Step 6. Send the dried bricks into the r...

Embodiment 2

[0030] A method for preparing a coal gangue porous brick, comprising the steps of:

[0031] Step 1, taking 3 parts of shale, 2 parts of fly ash and 3 parts of coal gangue respectively in parts by weight, and crushing the shale and coal gangue until the particle size is less than 3 mm;

[0032] Step 2. Send the crushed shale, coal gangue and fly ash into the mixer, mix and stir, add water during the mixing process, adjust the moisture content of the material to 13%, then take out the mixed material and place it for more than 75 hours ;

[0033] Step 3. Send the material placed in step 2 into the mixer, add 0.7% water by weight of the material, and mix evenly;

[0034] Step 4. Send the mixed material in step 3 into the brick making machine, add water, adjust the moisture content of the material to 12%, and then make bricks;

[0035] Step 5, send the adobe made into a drying kiln, and dry it for 28 hours at a temperature of 120°C;

[0036] Step 6. Send the dried bricks into th...

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Abstract

A gangue perforated brick and a preparation method thereof. The preparation method comprises the following steps: taking, by weight, 1 to 3 parts of shale, 1 to 3 parts of fly ash and 3 to 9 parts of gangue, respectively crushing the shale and the gangue, putting the crushed shale and gangue into a stirring mill, adding water in the process of stirring so as to control the water content of the mixture to be 12 to 13%, taking the mixture out and allowing the mixture to stand for more than 72 hours; putting the mixture into the stirring mill again, adding water, the amount of which is 0.5 to 1% of that of the mixture, and evenly mixing the water and the mixture; putting the obtained mixture into a brickmaking machine, adjusting the water content to be 10 to 12% so as to prepare adobes; putting the adobes into a dry kiln for drying and then into a roasting kiln for roasting, wherein the time for roasting is 48 to 55 hours and temperature in the process of roasting evenly increases from 100 DEG C to 1000 DEG C first and evenly decreases from 1000 DEG C to 100 DEG C next, and taking out the roasted adobes for cooling so as to obtain gangue perforated bricks. The gangue perforated brick prepared by the method has a hole density rate over 26%, produces holes of a circular shape, and has high strength and good weather resistance.

Description

technical field [0001] The invention relates to a preparation method of a porous brick, in particular to a coal gangue porous brick and a preparation method thereof. technical background [0002] Coal gangue porous brick is a new type of sintered brick with coal gangue as the binder. The production cost of coal gangue brick is lower than that of ordinary clay bricks. Using coal gangue to make bricks not only saves land, but also consumes mine waste, which is beneficial Environmentally friendly low-carbon building materials. At present, due to the imperfection of the preparation process, the gangue porous bricks are not strong and durable, and cannot meet the needs of engineering construction. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a coal gangue porous brick and its preparation method. The prepared coal gangue porous brick has the advantages of high strength and good weathering resistance. [0004] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B33/00C04B33/132
CPCC04B38/0074
Inventor 谢根良高柯刘增建
Owner HENAN UNIV OF SCI & TECH
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