CN101168982A

CN101168982A - Coal gangue coal ash hollow brick and preparation method thereof

Info

Publication number: CN101168982A
Application number: CNA2006101340824A
Authority: CN
Inventors: 孙振勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-25
Filing date: 2006-10-25
Publication date: 2008-04-30

Abstract

The invention belongs to a building material product, in particular relates to a novel coal gangue and fly ash cavity brick, and a production method thereof. Six parts of coal gangue and four parts of fly ash are taken, crushed by a crushing machine, put into a mixer to be mixed uniformly by adding water, and extruded to be green brick bars by a vacuum extruding machine, the green brick bars are cut into cavity green bricks, air dried, then delivered into a brick kiln, and sintered to be the qualified coal gangue and fly ash cavity bricks. The novel coal gangue and fly ash cavity brick is made of industrial waste residue as the raw material, and can be widely applied to the capital construction in all walks of life.

Description

A kind of novel coal gangue coal ash hollow brick and preparation method thereof

The present invention relates to a kind of novel coal gangue coal ash hollow brick and preparation method thereof.

For these years, China's building material industry is all being made the different clinker brick of raw material product in next life kind specification of clay.Though this has brought huge economic and social benefit for social and enterprise, has also brought potential infinite future trouble to the descendants.Brickmaking will use a large amount of clays to do raw material, takies and destroyed the large tracts of land arable land.If things go on like this, the soil large tracts of land goes to pot in continuous minimizing, and population is but in continuous increase, and human food supply becomes potential problem.Simultaneously, the exploitation colliery will give off a large amount of gangues, and the power plant will give off a large amount of flyash with coal power generation.Pile up like a mountain for coal gangue coal ash, taken the large tracts of land arable land, the environment around seriously having polluted again simultaneously.The gangue that the exploitation colliery is emitted how, the flyash that emits during the power plant generating adopts a kind of new technology to be fully utilized, and turns waste into wealth, and this is that pendulum is badly in need of the big problem that will solve in face of us.

The objective of the invention is to make a kind of bearing type and non-bearing type hollow brick, be widely applied to the capital works of all trades and professions, not only solved environmental issue but also provide raw material for building trade with industrial waste residue and gangue and flyash.

Purpose of the present invention adopts following measure to realize:

A kind of bearing type hollow brick, its size is: long 240 millimeters, wide 115 millimeters, high 115 millimeters.

A kind of non-bearing type hollow brick, its size is: long 240 millimeters, wide 180 millimeters, high 180 millimeters.

Bearing type holds type hollow brick difference and is that the size of brick is different with non-, the mold specification difference of using during making, and its manufacture craft is basic identical, and the present invention is realized by following preparation technology:

Get 6 parts of (by weight) gangues, the content that requires gangue silica is 50-70%, and the content of alundum (Al is 2-8%, and the calorific value of gangue is about the 600-700 kilocalorie.

Start the beater grinder in workshop, the gangue that is used for brickmaking is crushed to 80-100 purpose fineness with mill with it,, guarantee the quality of finished bricks to improve the activity of gangue.

Get 4 parts of (by weight) flyash, the content that requires flyash silica is 40-50%, and the content 22-25% of alundum (Al, the content of di-iron trioxide are 4-7%, and the calorific value of flyash is not required.

With mill flyash is crushed to 80-100 purpose fineness.

Above-mentioned colliery powder that has crushed and fine coal ashes are put in the twin axle stirring in 6: 4 ratio, add an amount of water, start mixer flyash, colliery powder are evenly stirred, with conveyer flyash colliery powder compound is transported in the two-stage vacuum extruder then.Start extruder and just compound can be extruded and brick width, base bar that gauge is identical, be cut into continuously and the measure-alike adobe of brick with the length of cutting cutter, through stand-by (accompanying drawing is a process chart) behind the dryness in the sun by brick.

Fire the brickkiln of flyash gangue hollow brick and grow 118 meters, wide 15 meters, high 8 meters, 6 meters of kilneye distances, arranged on both sides, every side 18 holes, once can adorn 2000 of adobes, the firing temperature will reach more than 1000 ℃, and adobe was fired in kiln 2 hours, through cooling in 6 hours, the finished product hollow brick of firing got final product kiln discharge again.

Claims

1. novel coal gangue coal ash hollow brick and preparation method thereof, its feature comprises following specification:

A kind of bearing type gangue, fly ash hollow brick, its long 240 millimeters, wide 115 millimeters, high 90 millimeters; A kind of non-bearing moulded coal spoil, fly ash hollow brick, its long 240 millimeters, wide 240 millimeters, high 115 millimeters, only distinguish at extruder and use the mould specification difference.

2. according to the described a kind of bearing type gangue of claim 1, fly ash hollow brick and a kind of non-bearing moulded coal spoil, fly ash hollow brick, it is characterized in that choosing 6 parts of gangues, its dioxide-containing silica 50-70%, alundum (Al 15-20%, di-iron trioxide 2-8%, the calorific value 600-700 kilocalorie of gangue, the gangue with some is crushed to the 80-100 order with mill with it then.

3. according to the described a kind of bearing type gangue of claim 2, fly ash hollow brick and a kind of non-bearing moulded coal spoil, fly ash hollow brick, it is characterized in that choosing 4 parts of flyash, its dioxide-containing silica 45-55%, alundum (Al 22-25%, di-iron trioxide 3-7%, the calorific value 200-300 of flyash kilowatt, the flyash with some is crushed to the 80-100 order with mill with it then.

4. according to the described a kind of bearing type gangue of claim 3, fly ash hollow brick and a kind of non-bearing moulded coal spoil, fly ash hollow process for producing bricks, it is characterized in that putting already pulverised gangue and flyash in the twin axle mixer a certain amount of water of adding in 6: 4 ratio, the base bar is extruded with the twin-stage extruder in the back that stirs, and is cut into the size identical with the brick specification with cutting cutter continuously by the length of brick.Adobe is sent into after drying in the high temperature kiln, just becomes a kind of bearing type or non-bearing moulded coal spoil, fly ash hollow brick through 2 hours sintering kiln discharges under 1000 ℃.