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Method for producing high strenght flyash ceramic sand

A manufacturing method and technology for fly ash, which are applied in the production of clay products, ceramic materials, other household appliances, etc., can solve the problems of irregular shape, limited quantity, environmental hazards, etc., and achieve regular particle size, high uniformity, and weight reduction. Effect

Inactive Publication Date: 2007-01-24
JILIN ACAD OF AGRI MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Fly ash is a waste of thermal power plants, and its discharge volume is very large. If it is not handled properly, it will bring great harm to the environment.
At present, there is no technology and equipment for the production of fly ash pottery sand. The existing fly ash pottery sand is all screened out, the quantity is limited, and the shape is very irregular. It is still difficult to completely replace small-grained sand and gravel.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Formula (weight ratio):

[0026] Fly ash of Changchun No. 2 Thermal Power Plant: 75%

[0027] Clay: 15%

[0028] Fine sawdust: 4.5%

[0029] Coal powder 5%

[0030] Water glass: 0.5%

[0031] Process:

[0032] Add the fly ash, clay, fine sawdust, and coal powder of Changchun No. 2 Thermal Power Plant into the mixer according to the above ratio, mix evenly, and spray a certain amount of 0.02% water glass aqueous solution prepared in advance, and continue stirring to control the moisture content at 20%. about. Then put the reconciled material into a flat mill granulator to shape, and then put the pellets into balls into a disc ball machine to form balls, and then put them into a sintering kiln for roasting. Control the sintering temperature during sintering. When the sintering temperature reaches 920°C±20°C, keep it warm for 25 minutes to allow the components to fully react, and then continue to generate temperature. When the sintering temperature reaches 1300°C±20°...

Embodiment 2

[0034] Formula (weight ratio):

[0035] Fly ash of Changchun No.1 Thermal Power Plant: 78%

[0036] Clay: 12%

[0037] Fine sawdust: 5%

[0038] Coal powder 4.5%

[0039] Water glass: 0.5%

[0040] Process:

[0041] Add the fly ash, clay, fine sawing technology and coal powder of Changchun Thermal Power No. 20% or so. Then put the reconciled material into a flat mill granulator to shape, and then put the pellets into balls into a disc ball machine to form balls, and then put them into a sintering kiln for roasting. Control the sintering temperature during sintering. When the sintering temperature reaches 920°C±20°C, keep it warm for 25 minutes to make the components fully react, and then continue to generate temperature. When the sintering temperature reaches 1250°C±20°C, keep it warm for 45 minutes, and the sintering ends. After the sintering is completed, when the kiln is cooled to about 600°C, it will be cooled naturally when it comes out of the kiln. Fly ash potter...

Embodiment 3

[0043] Formula (weight ratio):

[0044] Fly ash of Changchun No. 2 Thermal Power Plant: 80%

[0045] Clay: 12%

[0046] Fine sawdust: 3%

[0047] Flue Ash 4.2%

[0048] Water glass: 0.8%

[0049] Process:

[0050] Add the fly ash, clay, fine sawdust, and flue ash of Changchun No. 2 Thermal Power Plant into the mixer according to the above ratio, mix evenly, and spray a certain amount of 0.02% water glass aqueous solution prepared in advance, and continue stirring to control the moisture content at 20 %about. Then put the reconciled material into a flat mill granulator to shape, and then put the pellets into balls into a disc ball machine to form balls, and then put them into a sintering kiln for roasting. Control the sintering temperature during sintering. When the sintering temperature reaches 930°C±20°C, keep it warm for 25 minutes to allow the components to fully react, and then continue to generate temperature. When the sintering temperature reaches 1280°C±20°C, keep...

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Abstract

The high strength fly ash haydite producing process belongs to the field of fly ash utilizing and new building material technology. The high strength fly ash haydite is produced with fly ash, clay, saw dust and coal powder, and through mixing in a stirrer, adding certain amount of water glass and controlling water content of about 20 %, pelletizing, sintering and cooling. The high strength fly ash haydite product has granularity of 3-5mm, bulk density of 800-900kg / cu m, and compression strength of 10-20 MPa, and may be used as aggregate of wall board.

Description

technical field [0001] The invention belongs to the technical field of fly ash utilization and new building material industry, and in particular relates to a method for manufacturing high-strength fly ash pottery sand. Background technique [0002] Fly ash is a waste of thermal power plants, and its discharge volume is very large. If it is not handled properly, it will bring great harm to the environment. At present, there is no technology and equipment for the production of fly ash pottery sand. The existing fly ash pottery sand is all screened out, the quantity is limited, and the shape is very irregular. It is still difficult to completely replace small-grained sand and gravel. Thus, the invention of fly ash pottery sand is imperative. Contents of the invention [0003] The technical problem to be solved by the present invention is to develop a new type of lightweight aggregate for building materials, which is a small, uniform particle fly ash pottery sand, which has t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/135C04B33/04
CPCY02P40/60
Inventor 赵国明李君兴贾文光矫云学张云硕袁存亮
Owner JILIN ACAD OF AGRI MACHINERY
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