CN105174833A - Production technology for autoclaved aerated concrete building block - Google Patents
Production technology for autoclaved aerated concrete building block Download PDFInfo
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- CN105174833A CN105174833A CN201510500871.4A CN201510500871A CN105174833A CN 105174833 A CN105174833 A CN 105174833A CN 201510500871 A CN201510500871 A CN 201510500871A CN 105174833 A CN105174833 A CN 105174833A
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Abstract
The invention discloses a production technology for an autoclaved aerated concrete building block. The production technology is characterized in that the material formula comprises, by weight, 65% of fly ash, 15% of cement, 14% of lime, 5.5% of phosphogypsum and 0.5% of aluminum powder. The production technology comprises the following steps: firstly, slurries are prepared, namely, fly ash is ground by utilization of a ball grinding mill to prepare a fly ash slurry, phosphogypsum is added with water, then stirring is carried out for 1h, a phosphogypsum slurry is prepared, and then lime is crushed and ground to lime powder by utilization of the ball grinding mill; secondly, blending and stirring are carried out, namely, all the materials are sent to a casting mixer, the casting mixer is started, stirring is carried out and a concrete slurry is obtained; thirdly, casting and die entering are carried out, namely, all the concrete slurry in the casting mixer is placed in a die, and casting is carried out; fourthly, namely, a green body is thickened and condensed gradually; fifthly, cutting is carried out, namely, the shaped green body is cut according to a designed size; sixthly, autoclaved curing is carried out, namely, the cut green body is sent to an autoclaved curing kettle for autoclaved curing, and a finished product aerated concrete building block is obtained.
Description
Technical field
The present invention relates to a kind of gas concrete field, particularly relate to a kind of production technique of autoclave aerated concrete building block.
Background technology
Air-entrained concrete building block with cement, slag, sand, lime etc. for main raw material, add foaming agent, through stirring solid block that is shaping, steam press maintenance, gas concrete, by purposes, can be divided into non-bearing building block, bearing building block, insulation block, wallboard and five kinds, roof boarding.Aerated bricks has that unit weight is light, heat-insulating property is high, sound-absorbing effect is good, and having the advantages such as certain intensity and workability, is that China applies the earliest, one of most popular light wall material.China aerated concrete products overwhelming majority is building block, is used for greatly filling and the enclosed structure of skeleton construction.
Existing building wall material has clay solid brick and hollow brick, flyash is the autoclave aerated concrete building block of main raw material, and other industrial wastes such as waste residue stone flour, waste that there is not yet processing of stone industry produce autoclave aerated concrete building block.Be that the autoclave aerated concrete building block of main raw material exists certain defect with flyash, as: radioactive substance exceeds standard, starting material supply and demand are nervous, frost resistance is poor, well can not be combined with mortar in building construction, the quality accident such as easily cause that metope comes off, especially the radiocontamination serious harm person is healthy.The production method of current air-entrained concrete building block simultaneously, how each raw material is mixed, then be mixed in proportion with water stir, shaping, supercharging maintenance obtains, because all raw materials are mixed together stirring by the method, the whipping device that required power is larger, cost is higher, also easily stirs uneven, affects quality product.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of production technique of autoclave aerated concrete building block.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A production technique for autoclave aerated concrete building block, is characterized in that, comprises the following steps:
The concrete percentage composition of described material prescription is as follows: flyash: 65%, cement: 15%, lime: 14%, phosphogypsum 5.5%, aluminium powder: 0.5%;
1), slip processed: by utilization of fly ash ball mill grinding, flyash is sent in slurrying pond after being milled to particle diameter≤0.045mm, and add water stirring 1 hour, make fine coal ash material slip, phosphogypsum adds water stirring 1 hour, and phosphogypsum slip, then utilizes ball mill crushing grinding lime powder by lime;
2), batching stirs: send in electronic powder weigher by lime powder and cement, after cummulative metering, deliver in cast stirrer, delivered in electronic measuring scale by flyash slip and measure, the flyash slip measured directly puts into cast stirrer; Drop into Aluminum powder stirrer after aluminium powder human metering and stir into aluminium powder suspension, every mould configuration once, the aluminium powder suspension be stirred directly puts into cast stirrer, and phosphogypsum slip is delivered in electronic measuring scale and measured, and the phosphogypsum slip measured directly puts into cast stirrer; Open cast stirrer, stir 3 ~ 5 minutes under the rotating speed of rotating speed 480 revs/min, obtain concrete slurry;
3), mould is poured into: transported by casting mold in place to cast stirrer, the blanking arm blowing cast of cast stirrer, until cast stirrer inner concrete slurry is all put into mould, be poured, the concrete slurry dropped on during cast outside casting mold is recycled to useless stock tank;
4), rest: be 30 DEG C by casting mold in temperature, relative humidity be get angry in the environment of 60%, auxiliary material gets angry and base substrate expanded gradually, base substrate progressively multiviscosisty condensation, just support quietly to stop 2-5.5 hour;
5), cut: molding blank is cut according to size;
6), steam-cured: the base substrate of well cutting is transported on steam-cured dolly together with base plate, delivers in steam-cured still and carry out steam press maintenance, obtain finished product air-entrained concrete building block, the waste water reclamation that steam-cured still is discharged to wastewater disposal basin, and for slurrying.
The production technique of aforesaid a kind of autoclave aerated concrete building block, is characterized in that: phosphogypsum slip, flyash slip, lime, cement and the aluminium powder put in stirring casting molding machine are the amount needed for a mould at every turn.
The production technique of aforesaid a kind of autoclave aerated concrete building block, is characterized in that: in described step 5), cutting process is by flush-type clear away waste, and carries out the obtained useless slurry of stirring to pulp, and described useless slurry is in step 2) add in base substrate slurry as auxiliary ingredients.
The production technique of aforesaid a kind of autoclave aerated concrete building block, is characterized in that: described step 6) deliver in steam-cured still and carry out steam press maintenance, maintenance 8h in steam still.
Beneficial effect of the present invention: the autoclave aerated concrete building block that the present invention prepares and obtains has lightweight, good heat insulating, there is certain intensity and the advantage such as can to process, the goods such as walling unit, wallboard, floor, roof boarding, warming plate and insulating pipe can be made into.The materials for wall gaps in market occurred after effectively can filling up clay brick compulsory withdrawal market, ensure the demand of fundamental construction, Economization on land, promotes local building material product structure, promotes the sound development of materials for wall industry.First flyash pulverized and be ground to particle diameter≤0.045mm by the present invention, thus increase its surface-area, increase its viscosity, then flyash and phosphogypsum, lime and cement first mixed, then put into cast stirrer together and stir
Mix, more easily by its mixing and stirring, finished product building block can be avoided to occur hickie, affect quality; The present invention once only adds the amount needed for a mould in cast stirrer, and adds front all raw materials through accurate weighing, can ensure the consistence of final product quality; The slurry that cast falls and the scrap stock that cutting base substrate falls all are recycled to useless stock tank, then pump in cast stirrer and recycle, not only do not waste raw material, and can increase its viscosity after repeatedly stirring, thus improve the intensity of finished product building block.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described.
As shown in Figure 1, a kind of production technique of autoclave aerated concrete building block, is characterized in that, comprises the following steps:
The concrete percentage composition of described material prescription is as follows: flyash: 65%, cement: 15%, lime: 14%, phosphogypsum 5.5%, aluminium powder: 0.5%;
1), slip processed: by utilization of fly ash ball mill grinding, flyash is sent in slurrying pond after being milled to particle diameter≤0.045mm, and add water stirring 1 hour, make fine coal ash material slip, phosphogypsum adds water stirring 1 hour, and phosphogypsum slip, then utilizes ball mill crushing grinding lime powder by lime;
2), batching stirs: send in electronic powder weigher by lime powder and cement, after cummulative metering, deliver in cast stirrer, delivered in electronic measuring scale by flyash slip and measure, the flyash slip measured directly puts into cast stirrer; Drop into Aluminum powder stirrer after aluminium powder human metering and stir into aluminium powder suspension, every mould configuration once, the aluminium powder suspension be stirred directly puts into cast stirrer, and phosphogypsum slip is delivered in electronic measuring scale and measured, and the phosphogypsum slip measured directly puts into cast stirrer; Open cast stirrer, stir 3 ~ 5 minutes under the rotating speed of rotating speed 480 revs/min, obtain concrete slurry; Phosphogypsum slip, flyash slip, lime, cement and the aluminium powder put in stirring casting molding machine are the amount needed for a mould at every turn.
3), mould is poured into: transported by casting mold in place to cast stirrer, the blanking arm blowing cast of cast stirrer, until cast stirrer inner concrete slurry is all put into mould, be poured, the concrete slurry dropped on during cast outside casting mold is recycled to useless stock tank;
4), rest: be 30 DEG C by casting mold in temperature, relative humidity be get angry in the environment of 60%, auxiliary material gets angry and base substrate expanded gradually, base substrate progressively multiviscosisty condensation, just support quietly to stop 2-5.5 hour;
5), cut: molding blank is cut according to size;
6), steam-cured: be transported on steam-cured dolly together with base plate by the base substrate of well cutting, deliver in steam-cured still and carry out steam press maintenance, maintenance 8h in steam still, obtains finished product air-entrained concrete building block, the waste water reclamation that steam-cured still is discharged to wastewater disposal basin, and for slurrying.
In step 5), cutting process is by flush-type clear away waste, and carries out the obtained useless slurry of stirring to pulp, and described useless slurry is in step 2) add in base substrate slurry as auxiliary ingredients.
In sum, the present invention's preparation and the autoclave aerated concrete building block that obtain has lightweight, good heat insulating, has certain intensity and the advantage such as can to process, can be made into the goods such as walling unit, wallboard, floor, roof boarding, warming plate and insulating pipe.The materials for wall gaps in market occurred after effectively can filling up clay brick compulsory withdrawal market, ensure the demand of fundamental construction, Economization on land, promotes local building material product structure, promotes the sound development of materials for wall industry.First flyash pulverized and be ground to particle diameter≤0.045mm by the present invention, thus increase its surface-area, increase its viscosity, then flyash and phosphogypsum, lime and cement first mixed, then put into cast stirrer together and stir
Mix, more easily by its mixing and stirring, finished product building block can be avoided to occur hickie, affect quality; The present invention once only adds the amount needed for a mould in cast stirrer, and adds front all raw materials through accurate weighing, can ensure the consistence of final product quality; The slurry that cast falls and the scrap stock that cutting base substrate falls all are recycled to useless stock tank, then pump in cast stirrer and recycle, not only do not waste raw material, and can increase its viscosity after repeatedly stirring, thus improve the intensity of finished product building block.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. a production technique for autoclave aerated concrete building block, is characterized in that, comprises the following steps:
The concrete percentage composition of described material prescription is as follows: flyash: 65%, cement: 15%, lime: 14%, phosphogypsum 5.5%, aluminium powder: 0.5%;
1), slip processed: by utilization of fly ash ball mill grinding, flyash is sent in slurrying pond after being milled to particle diameter≤0.045mm, and add water stirring 1 hour, make fine coal ash material slip, phosphogypsum adds water stirring 1 hour, and phosphogypsum slip, then utilizes ball mill crushing grinding lime powder by lime;
2), batching stirs: send in electronic powder weigher by lime powder and cement, after cummulative metering, deliver in cast stirrer, delivered in electronic measuring scale by flyash slip and measure, the flyash slip measured directly puts into cast stirrer; Drop into Aluminum powder stirrer after aluminium powder human metering and stir into aluminium powder suspension, every mould configuration once, the aluminium powder suspension be stirred directly puts into cast stirrer, and phosphogypsum slip is delivered in electronic measuring scale and measured, and the phosphogypsum slip measured directly puts into cast stirrer; Open cast stirrer, stir 3 ~ 5 minutes under the rotating speed of rotating speed 480 revs/min, obtain concrete slurry;
3), mould is poured into: transported by casting mold in place to cast stirrer, the blanking arm blowing cast of cast stirrer, until cast stirrer inner concrete slurry is all put into mould, be poured, the concrete slurry dropped on during cast outside casting mold is recycled to useless stock tank;
4), rest: be 30 DEG C by casting mold in temperature, relative humidity be get angry in the environment of 60%, auxiliary material gets angry and base substrate expanded gradually, base substrate progressively multiviscosisty condensation, just support quietly to stop 2-5.5 hour;
5), cut: molding blank is cut according to size;
6), steam-cured: the base substrate of well cutting is transported on steam-cured dolly together with base plate, delivers in steam-cured still and carry out steam press maintenance, obtain finished product air-entrained concrete building block, the waste water reclamation that steam-cured still is discharged to wastewater disposal basin, and for slurrying.
2. the production technique of a kind of autoclave aerated concrete building block according to claim 1, is characterized in that: phosphogypsum slip, flyash slip, lime, cement and the aluminium powder put in stirring casting molding machine are the amount needed for a mould at every turn.
3. the production technique of a kind of autoclave aerated concrete building block according to claim 1, it is characterized in that: in described step 5), cutting process is by flush-type clear away waste, and carry out the obtained useless slurry of stirring to pulp, and described useless slurry is in step 2) add in base substrate slurry as auxiliary ingredients.
4. the production technique of a kind of autoclave aerated concrete building block according to claim 1, is characterized in that: described step 6) deliver in steam-cured still and carry out steam press maintenance, maintenance 8h in steam still.
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