CN1654401A

CN1654401A - Process for producing clinker brick by using fly ash shale

Info

Publication number: CN1654401A
Application number: CNA2004100438703A
Authority: CN
Inventors: 贾守富; 车延辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-15
Filing date: 2004-09-15
Publication date: 2005-08-17

Abstract

The technological process of producing sintered brick with flyash and shale includes the following steps: A. crushing shale in a crusher to grains with 0.25 mm below component accounting for over 80 % and 0.5 mm below component accounting for over 90 %; B. mixing shale powder and flyash in the volume ratio of 2-4 to 1 in a double-shaft stirrer, adding water in 20 % and piling the mixture for ageing for 1 day or more time; and C. producing brick with the mixture through conventional adobe making and sintering process. The present invention makes it possible to save earth resource, and the produced brick has high efflorescence resistance.

Description

Utilize flyash, shale to produce the technology of vitrified brick

Affiliated field: the present invention relates to a kind of flyash, shale that utilizes and produce new construction material, the production technology of flyash, shale vitrified brick.

Technical background: the traditional building material Qin brick and Han tile raw material of China is the soil that the mankind depend on for existence.In order to protect the environment protection soil, accelerate to eliminate former economic and commercial committee of clay solid sulphur country, sent national provincial capital entirely together with the Ministry of Construction, Ministry of Land and Resources, Ministry of Agriculture's connection, before the end of the year 2005, realize banning use of the notice of the target of solid clay brick at the latest.Various places government has also launched respectively the plan that bans use of clay brick.Because the Chemical Composition of clay, shale, these three kinds of raw materials of flyash is close substantially; can be used for producing sintered article; so in order to develop novel wall material; the clay brick field that has in clay brick also admixture flyash; but the incorporation maximum is about 50%; still destroy a large amount of land resourcess, can not be from basic protection soil.

Summary of the invention: the present invention is a consolidating material of making flyash of shale, produces coal ash sintering brick technology.The present invention realizes by following technological line:

A: raw material is prepared in advance, with shale with crusher in crushing to account for the accounting for 90% or more 80% or more, less than 0.5mm of particle less than 0.25mm;

B: material combination, with feeding machine shale and flyash by volume ratio be transported to biaxial rneader by Pi Daiji, add water about 20% after the stirring, pile up ageing more than 1 day, make shale fine and smooth more, give and add plasticity, better together loose flyash gluing, be beneficial to moulding, the volume ratio interval of shale and flyash combination is: flyash: shale is between 2: 1 and 4: 1;

C:, produce finished product by common blank-making method and sintering method with the compound after the ageing.

Flyash has lost chemically-bonded water in combustion processes, and particle is little than clay, and plasticity is low.Must the admixture consolidating material when being used for producing vitrified brick.The shale of the present invention about 20%-30%, be spiked among the flyash of 70%-80%, ageing so just can make shale performance cementation more than one day, made shale fine and smooth more, give and add plasticity, better loose flyash gluing together, be beneficial to moulding, utilize the common explained hereafter of baking bricks to go out the coal ash sintering brick of high-strength light again, make the utilization of coal ash rate increase by 30%---50%, bake bricks and need not come true by soil.Therefore the present invention has saved a large amount of soils, has effectively protected limited land resources, has satisfied the building needs simultaneously greatly.The flyash, shale vitrified brick that the present invention produces, detect through Heilongjiang Province's building materials quality supervisory station, comply with the national standard requirements, its middle grade reaches 18.3MPa, national standard is more than or equal to 10.0MPa, the product that the present invention produces, the weathering resistance performance is strong, and the dry mass loss of monolithic brick is 0, be better than national standard, its visual appearance in addition, size deviation, intensity etc. all have more excellent measurement result.

Description of drawings:

Fig. 1 is a process flow sheet of the present invention

Embodiment:

Embodiment 1

The present invention has adopted plurality of devices to produce, Processes and apparatus as shown in Figure 1, the present invention utilizes flyash, shale to produce the technology of vitrified brick:

A: the preparation in advance of raw material: with shale pulverizer fragmentation, in the particle less than the accounting for more than 80% of 0.25mm, less than accounting for more than 90% of 0.5mm;

B: material combination, with feeding machine shale and flyash by volume ratio be transported to biaxial rneader by Pi Daiji, add water about 20% after the stirring, pile up ageing more than 1 day, the volume ratio interval of flyash and shale combination is: flyash: shale=4: 1, and this kind composition proportion can be used for ordinary fired brick;

C: the compound after the ageing by twin rollers, is entered wheel roller again, enter second road after the refinement homogenize and stir, enter vacuum brick making machine again and extrude the mud bar, make the standard briquet by blank cutter;

D: but the adobe seasoning, but also artificial seasoning;

E: dried adobe enters the sintering oven sintering, and 950 ℃-1000 ℃ of firing temperatures after temperature rises to top temperature, are incubated 5 hours, progressively cooling, kiln discharge, piling.

Embodiment 2

A: the preparation in advance of raw material: with shale pulverizer fragmentation, in the material less than the accounting for more than 80% of 0.25mm, less than accounting for more than 90% of 0.5mm;

B: raw material combination, with feeding machine shale and flyash by volume ratio be transported to biaxial rneader by Pi Daiji, add water about 20% after the stirring, pile up ageing more than 1 day, the volume ratio of flyash and shale combination is: flyash: shale=2: 1, the characteristics of this kind composition proportion are to increase the shale volume, improve the plasticity index of compound, can produce perforated brick or hollow brick;

C: the compound after the ageing by twin rollers, is entered wheel roller again, enter second road after the refinement homogenize and stir, enter vacuum brick making machine again and extrude the mud bar, make briquet by blank cutter;

D: but the adobe seasoning, but also artificial seasoning;

E: dried adobe enters the sintering oven sintering, and 950 ℃-1000 ℃ of firing temperatures after temperature rises to top temperature, are incubated 5 hours, progressively cooling, kiln discharge, Ma Duo.

Claims

1, a kind of technology of utilizing flyash, shale to produce vitrified brick, it is characterized in that: A: raw material is prepared in advance, with shale with crusher in crushing to account for the accounting for 90% or more 80% or more, less than 0.5mm of particle less than 0.25mm;

B: material combination, with feeding machine shale and flyash by volume ratio be transported to biaxial rneader by Pi Daiji, add water about 20% after the stirring, pile up ageing more than 1 day, the volume ratio interval of shale and flyash combination is: flyash: shale is between 2: 1 and 4: 1;