CN103396072A - Autoclaved fly ash aerated concrete blank manufacturing method - Google Patents
Autoclaved fly ash aerated concrete blank manufacturing method Download PDFInfo
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- CN103396072A CN103396072A CN2013103415721A CN201310341572A CN103396072A CN 103396072 A CN103396072 A CN 103396072A CN 2013103415721 A CN2013103415721 A CN 2013103415721A CN 201310341572 A CN201310341572 A CN 201310341572A CN 103396072 A CN103396072 A CN 103396072A
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Abstract
The invention relates to an autoclaved fly ash aerated concrete blank manufacturing method comprising the steps that: I, raw materials are processed, wherein a dry fly ash slurry comprises 1 part of fly ash and 6-8 parts of water; quicklime is prepared, wherein quicklime ACaO is 55-70%; a aluminum powder slurry comprises 1 part of aluminum and 6-8 parts of water; II, material blending is carried out, wherein 3770-3830 parts of dry fly ash slurry, 590-610 parts of quicklime, 50-70 parts of cement, and 16-17 parts of aluminum powder liquid are adopted; III, material stirring is carried out, wherein the casting slurry is injected into a mold trolley with a speed of 5.2-5.6min/mold; IV, curing is carried out, wherein the mold trolley is moved to a curing room, and a blank curing time is 60-90min; V, blank turning and de-molding are carried out; VI, cutting is carried out; VII, bottom material is cut off; VIII, steam autoclaving is carried out, wherein vacuuming, pressurizing, pressure-maintaining, and reduced-pressure autoclaving are carried out, and a constant pressure is not lower than 1.2Mpa, and IX, the blank is fetched. Finished aerated concrete building block product provided by the invention has high qualification rate and high compressive strength. According to the concrete blank provided by the invention, blank crack is reduced, and aerated concrete finished product qualification rate is high.
Description
Technical field
The present invention relates to a kind of manufacture method of aerated coal ash concrete base substrate.
Background technology
In the main production flow process of existing aerated coal ash concrete, comprising: Raw material processing preparation, batching, cast, quietly stop, cut, go bed material, steam press maintenance and go out the operations such as still.
In the process of the processing of raw material and preparation, if unslaked lime processing granularity is inhomogeneous, explosion and quick-fried point will appear in bulk unslaked lime wherein in the steam pressure process of high temperature, high pressure, and the base substrate middle part intensity of finished product is not high, in going out still, folder base process, the middle part crackle occurs.
In production process, the oxidation rate of unslaked lime is too fast, the discharge quantity deficiency of unslaked lime in agglutinate.In quiet shut-down order, in mould vehicle slip in earlier stage generate heat expand too fast, the multiviscosisty of later stage base substrate, hardening capacity deficiency, base substrate plasticity is poor, is easy to occur base substrate middle part crackle aloft in the process of the demoulding of overturning, and is forced to base substrate is scrapped, and pushes in the cutting melt pit.
In upset, go in the bed material link, due to, indivedual side plate mechanical deformations or side plate sizing do not clean up, cause side plate medullary ray and Cutting dolly medullary ray not to line up, base substrate with remove end loop wheel machine upset backup plate excessive clearance, when 90 degree upset, base substrate has by a small margin and falls, fine crack appears in the base substrate middle part, and general range estimation be cannot see, and when high temperature, the operation of high pressure steam pressure, crackle will be high-visible.
The generation reason of Aerated concrete blank middle part crackle has many kinds, the generation of the crackle that each is tiny, all can cause serious destruction to Aerated concrete blank, the decrease product qualified rate, increase enterprise's production cost, increase and dispose damaged waste aerocrete transportation cost.
Summary of the invention
For the above-mentioned deficiency of the manufacture method that overcomes existing aerated coal ash concrete base substrate, the invention provides the manufacture method of the aerated coal ash concrete base substrate that a kind of product qualified rate of gas concrete base substrate is high.
The manufacture method of this aerated coal ash concrete base substrate comprises following step successively:
iprocess raw material
A dried coal powder ash slip
The dry powder coal ash is delivered to the flyash ash-storing bin by coal-burning power plant by pneumatic ash conveying pipe, and machine for producing slurry from dry powder material is arranged at the ash-storing bin bottom, adds water, and the quality proportioning of water and dry powder coal ash is
Dry powder coal ash 1; Water 6-8;
The best is
Dry powder coal ash 1; Water 7;
Water stirs and makes dried coal powder ash slip with the dry powder coal ash together with machine for producing slurry from dry powder material, and dried coal powder ash slip diffusibleness is 24～26cm.The dried coal powder ash slip prepared is delivered in large stirred pot and continues stirring, stand-by.
B prepares unslaked lime
The particle diameter that utilizes jaw crusher will enter factory's unslaked lime is crushed to below 20mm, avoids using≤10 min Rapid ashs, the effective ACaO:55 of unslaked lime～70%; Oxidation rate: 15～25min; Digestion condition: 50～60 ℃; Through the ball mill fine grinding, after mill, unslaked lime is promoted to cementing feed bin by bucket elevator again;
The broken process with fine grinding is the broken jaw crusher that adopts of unslaked lime first paragraph, and it is 6 ± 2 mm that sheet separation, Hubei Province requires, and 8 mm sieve screening surpluses are less than 10%;
The second segment crusher adopts the three-region type ball mill, and in ball mill, grinding time is 3.5 ± 0.5 minutes; Going out the rear unslaked lime 200 order fineness requirement of mill is that screen over-size is not little by 10%, should be 10 ~ 15%.
C prepares aluminum paste
Aluminium powder and water are packed in the aluminum paste tank in proportion, stir and prepare aluminium powder liquid, and the quality of aluminium powder and water (part) proportioning is
Aluminium 1; Water 6-8;
The best is
Aluminium 1; Water 7.
iIbatching
The quality of this aerated coal ash concrete blank raw material (part) proportioning is
Dried coal powder ash slip 3770～3830; Unslaked lime 590～610;
Cement 50～70; Aluminium powder liquid 16～17;
Wherein cement is silicate 325.
Best quality (part) proportioning is
Dried coal powder ash slip 3800; Unslaked lime 600;
Cement 60; Aluminium powder liquid 16.5.
First dried coal powder ash slip, unslaked lime and cement mixing time are not less than to 2min, and be stirred into the slurry of cast, the diffusibleness that the slip testing staff detects the slurry of cast reaches (scope is 15 ± 1%), add aluminium powder liquid, the input steam preheating, slurry temperature is controlled in adjusting well, and the slurry temperature of cast is 45～49 ℃.In winter, the slurry temperature of cast is 48 ± 1 ℃.Summer, 46 ± 1 ℃ of the slurry temperatures of cast, then carry out 0.5～1min and stir.
iIIcast
Open the stirrer dispensing valve, will pour into a mould slip and be poured in mould vehicle.
The cast churning time requires: 5.4 ± 0.2 min/ moulds.The stirrer running speed is: 1300 ± 100 turn/min.Teeming temperature: 45～47 ℃.
iVrest
Start timing from being poured into mould, within 3 minutes, mould vehicle moves on to the chamber of resting and pauses and to put in place, after this transfixion and avoid vibration within 60min
;get angry bubbling and progressively multiviscosisty condense, base substrate risings of expanding gradually, 30～40min base substrate afterwards no longer grows tall; Start timing from being poured into mould, the base substrate time of resting is 60～90min;
vthe base substrate upset demoulding
Upset goes bed material loop wheel machine side plate buildup to clean out in time, can keep green body side harmless, prevents that the local buildup base substrate of side plate middle part local pressure is irregular and forms crackle.
On base substrate after the upset loop wheel machine, base substrate and loop wheel machine side plate mutually near the time, the both sides spacing is controlled between 0 ~ 3mm, spacing is greater than 3mm, there will be the base substrate part collapse during upset, causes crackle, need to shrink immediately the loop wheel machine side plate screw that overturns; If spacing is less than 0mm, base substrate and loop wheel machine side plate mutually near the time, base substrate is pushed by side plate, crackle appears in base substrate, needs suitably loosen immediately upset loop wheel machine side plate screw, within its spacing is controlled to 0 ~ 3mm scope.Base substrate is by the demoulding of upset overhead traveling crane.
vIcutting
Generally be poured into mould and complete in 90 minutes afterwards, start mould vehicle is sent to the chamber of resting, and carry out the demoulding and base substrate cutting within 2min, base substrate by the upset overhead traveling crane demoulding after, hang to cutting work station, by Cutting dolly, carry, first carry out crosscut, remove liftout, then cut to the rip cutting position.The process that laterally, vertically cutting and top layer waste material are removed of base substrate is all completed by the PLC Controlling System of cutting machine itself.
vIIremove bed material
After the base substrate rip cutting, by another cart transport to going to truck position, bed material sky.By removing end overhead traveling crane, the base substrate somersault is removed to the base substrate bed material.
vIIIsteam press maintenance
The upset loop wheel machine is after removing bed material, and steady running is to organizing into groups the steaming maintaining vehicle top, when the upset loop wheel machine descends in the vertical direction, according to first fast-descending, the base substrate side plate is during apart from steaming maintaining vehicle 30 ± 5mm, then base substrate is fallen at a slow speed on steaming maintaining vehicle, avoids base substrate to be subject to colliding fast and cracking.
By the pushing tow dolly, head in autoclave.
Close the door of autoclave, steam-cured through vacuumizing, pass into the steps such as middle pressure steam progressively boosts, constant voltage, step-down.The pressure vacuumized is not more than 0.06Mpa, starts to boost, and pressure rising time
be not less than2h, the pressure of boosting
by forcebe not less than 1.2Mpa; Start constant voltage, constant voltage is pressed
by forcebe not less than 6h, press
by forcebe not less than 1.2Mpa, temperature is 174-200 ℃; The step-down time is 2h, for steam saving, reduces the waste that steam directly effluxes, and can switch to the autoclave that other need steam by steam valve.
iX goes out still
After steam press maintenance completes, by going out the still travelling hoist, the finished product that maintenance is good is pulled out together with steam-cured dolly, by the finished product overhead traveling crane, finished product is winched on the side plate transfer roller together with side plate, by another finished product crane, finished product clamp is winched to ground again, by embracing car, the finished product roping is carried out to piling or directly entrucking to outdoor finished product stockyard.
The manufacture method of above-mentioned aerated coal ash concrete base substrate, its steps characteristic is: in step
iVrest bubbling time of getting angry is 15 ± 2min, and starting typing is highly 740 ± 10mm.Start multiviscosisty gradually and sclerosis after 40min; The base substrate time of resting is 85-90min, and the rear base substrate temperature of resting is at 85 ± 2 ℃.After mould enters the chamber of resting, must observe every mould slip bubbling time, high and excessive mould phenomenon, must not appear owing in the height of getting angry, otherwise inform that in time middle control carries out the technique adjustment, and make a record.Smooth and easy for guaranteeing to get angry, avoid the phenomenon of feeling suffocated, should before the slip bubbling, use professional drill rod to carry out artificial exhaust.
The manufacture method of above-mentioned aerated coal ash concrete base substrate, its steps characteristic is: in step
iVrest bubbling time of getting angry is less than 10min, can judge that the unslaked lime digestion time accelerates, and setting rate is fast, base substrate highly less than 660 mm that finalize the design, and it is high that base substrate is owed, base substrate plasticity deficiency, intensity is low.Advance to 80-90min clipping time, can avoid base substrate cutting crackle to occur.Teeming temperature to 44 ± 1 degree, suppress (prolongation) unslaked lime digestion time, increases base substrate process of setting later strength, strengthens the plasticity of cutting base substrate.
The manufacture method of above-mentioned aerated coal ash concrete base substrate, its steps characteristic is: in step
iVrest bubbling time of getting angry is greater than 30 min, and the base substrate typing is highly over 750 mm, and the base substrate superelevation, can judge that the unslaked lime digestion time is slower, the base substrate phenomenon of feeling suffocated.50 ± 5min can be that the 5mm iron staff evenly marks the irrigation canals and ditches of dark 400 ± 100 mm together at interval of 300 mm on the base substrate cross section with diameter in the time, can suitably improve teeming temperature to 48 ± 1 degree, accelerate the unslaked lime digestion time, keep the base substrate growth rate to synchronize with setting rate.Can avoid the base substrate crackle.
The manufacture method of above-mentioned aerated coal ash concrete base substrate, its steps characteristic is:
iprepared in the unslaked lime process by the b that processes raw material, the second segment crusher adopts the three-region type ball mill, and going out the rear unslaked lime 200 order fineness screen over-sizes of mill is 10 ~ 15%.
The manufacture method of above-mentioned aerated coal ash concrete base substrate, its steps characteristic is:
iprepared in the unslaked lime process by the b that processes raw material, the second segment crusher adopts the three-region type ball mill, goes out after mill when unslaked lime 200 order fineness screen over-sizes surpass 15%, increases in time 3% of district's steel ball in ball mill.Perhaps adjust ball mill hour mill ash amount, increase the waste material amount.
Beneficial effect of the present invention
The Aerated concrete blank crackle is the defect that is difficult to overcome of novel energy-saving construction materials for wall, the comprehensive impact of the links such as the base substrate crackle is subject to raw material, batching, pours into a mould, rests, cuts, upset, be not easy to correct analysis and judgement, the main source of gas concrete unacceptable product is because the Aerated concrete blank crackle causes.Obviously reduce the Aerated concrete blank crackle, substantially stopped the crackle of concrete base substrate, to improving the aerated concrete finished product qualification rate, play conclusive effect.
Applicant 2012, produce 300000 m per year
3air-entrained concrete building block production line annual production 32.8 ten thousand m
3, super design output 2.8 ten thousand m
3.The air-entrained concrete building block product qualified rate had brought up to 99.0% by 96.5 of the past, had improved 2.5%.According to 92 yuan/m of product cost
3, 120 yuan/m of selling price (containing freight charges, not containing tax)
3.
Economic benefit calculation: 32.8 ten thousand m
3* (120-92) unit/m
3=918.4 ten thousand yuan.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with embodiment, but the specific embodiment of the present invention is not limited to following embodiment.Those of ordinary skills do not have the manufacturing technology scheme of the aerated coal ash concrete base substrate that obtains under the creative work prerequisite, all belong to protection scope of the present invention.
embodiment mono-
The manufacture method embodiment of this aerated coal ash concrete base substrate comprises following step successively:
iprocess raw material
A dried coal powder ash slip
The dry powder coal ash is delivered to the flyash ash-storing bin by coal-burning power plant by pneumatic ash conveying pipe, and machine for producing slurry from dry powder material is arranged at the ash-storing bin bottom, adds water, and the quality proportioning of water and dry powder coal ash is
Dry powder coal ash 475kg; Water 3325 kg;
Here the quality of every part is 475kg.
Water stirs and makes dried coal powder ash slip with the dry powder coal ash together with machine for producing slurry from dry powder material, and dried coal powder ash slip diffusibleness is 25cm, and the dried coal powder ash slip prepared is delivered in large stirred pot and continues to stir.
B prepares unslaked lime
The particle diameter that utilizes jaw crusher will enter factory's unslaked lime is crushed to below 20mm, avoids using≤10 min Rapid ashs, the effective ACaO:55 of unslaked lime～70%; Oxidation rate: 15～25min; Digestion condition: 50～60 ℃; Through the ball mill fine grinding, after mill, unslaked lime is promoted to cementing feed bin by bucket elevator again;
The broken process with fine grinding is the broken jaw crusher that adopts of unslaked lime first paragraph, and it is 6 ± 2 mm that sheet separation, Hubei Province requires, and 8 mm sieve screening surpluses are less than 10%;
The second segment crusher adopts the three-region type ball mill, and in ball mill, grinding time is 3.5 ± 0.5 minutes; Go out the rear unslaked lime 200 order fineness 10 ~ 15% of mill.
C prepares aluminum paste
Aluminium powder and water are packed in the aluminum paste tank in proportion, stir and prepare aluminium powder liquid, and the quality proportioning of aluminium powder and water is
Aluminium 2kg; Water 14kg.
Here the quality of every part is 2kg
iIbatching
The quality proportioning of this aerated coal ash concrete blank raw material is
Dried coal powder ash slip 3800 kg; Unslaked lime 600 kg;
Cement 60 kg; Aluminium powder liquid 16 kg;
Wherein cement is silicate 325.
Here the quality of every part is 1kg.
First by dried coal powder ash slip, unslaked lime and cement mixing 2min, and stir, the slip testing staff detects the cast diffusibleness and reaches 15 ± 1%, adds aluminium powder liquid, the input steam preheating, and slurry temperature is controlled in adjusting well, and the slurry temperature of cast is 45-48 ℃.Carry out again the 1min stirring.
iIIcast
Open the stirrer dispensing valve, will pour into a mould slip and be poured in mould vehicle.
The cast churning time requires: 5.4 ± 0.2min/ mould.The stirrer running speed is: 1300 ± 100 turn/min.Teeming temperature: 45-47 ℃.
iVrest
Start timing from being poured into mould, 2 minutes mould vehicle move on to the chamber of resting pause and put in place, after this not vibration or displacement within 60min.Bubbling time of getting angry is 15min, and starting typing is highly 740 ± 10mm.Start multiviscosisty gradually and sclerosis after 40min.
The base substrate time of resting is 90min, and the rear base substrate temperature of resting is at 85 ℃.After mould enters the chamber of resting, observe every mould slip bubbling time, high and excessive mould phenomenon, do not appear owing in the height of getting angry.Get angry bubbling and progressively multiviscosisty condense, base substrate risings of expanding gradually, 35min base substrate afterwards no longer grows tall.
vthe base substrate upset demoulding
Upset goes bed material loop wheel machine side plate buildup to clean out in time, keeps green body side harmless, prevents that the local buildup base substrate of side plate middle part local pressure is irregular and forms crackle.
On base substrate after the upset loop wheel machine, base substrate and loop wheel machine side plate mutually near the time, the both sides spacing is controlled between 0 ~ 3mm, base substrate is by the overhead traveling crane demoulding of overturning.
vIcutting
Be no more than 90 minutes from being poured into after mould completes, base substrate hangs to cutting work station, by Cutting dolly, carries, and first carries out crosscut, removes liftout, then is cut to the rip cutting position.At 600 mm, be cut into long 600mm by the fixed cutting tool spacing.Wide and height all can be regulated, regulate transverse cutting steel wire spacing between 200 ~ 300mm, be cut into the base substrate that height is 200 ~ 300mm, regulate rip cutting cutting steel wire spacing between 100 ~ 400mm, be cut into the base substrate of the wide 100 ~ 400mm of being, the process that laterally, vertically cutting and top layer waste material are removed of base substrate is all completed by the PLC Controlling System of cutting machine itself.
vIIremove bed material
After the base substrate rip cutting, by another cart transport to going to truck position, bed material sky.By removing end overhead traveling crane, the base substrate somersault is removed to the base substrate bed material.
vIIIsteam press maintenance
The upset loop wheel machine is after removing bed material, and steady running is to organizing into groups the steaming maintaining vehicle top, when the upset loop wheel machine descends in the vertical direction, according to first fast-descending, the base substrate side plate is during apart from steaming maintaining vehicle 30mm, then base substrate is fallen at a slow speed on steaming maintaining vehicle, avoids base substrate to be subject to colliding fast and cracking.
By the pushing tow dolly, head in autoclave.
Close autoclave still door, steam-cured through vacuumizing, pass into the steps such as middle pressure steam progressively boosts, constant voltage, step-down.Be evacuated to-0.06Mpa, start to boost, be 2h pressure rising time, and the pressure that boosts is 1.2Mpa; Start constant voltage, constant voltage pressure is 6h, and pressure is 1.2Mpa, and temperature is 174-200 ℃; The step-down time is about 2h, for steam saving, reduces the waste that steam directly effluxes, and can switch to the autoclave that other need steam by steam valve.
iX goes out still
After steam press maintenance completes, by going out the still travelling hoist, the finished product that maintenance is good is pulled out together with steam-cured dolly, by the finished product overhead traveling crane, finished product is winched on the side plate transfer roller together with side plate, by another finished product crane, finished product clamp is winched to ground again, by embracing car, the finished product roping is carried out to piling or directly entrucking to outdoor finished product stockyard.
embodiment bis-
The embodiment of the manufacture method of this aerated coal ash concrete base substrate and the difference of embodiment are, in step
iVrest bubbling time of getting angry is 9min, can judge that the unslaked lime digestion time accelerates, and setting rate is fast, base substrate highly less than 660 mm that finalize the design, and it is high that base substrate is owed, base substrate plasticity deficiency, intensity is low.Clipping time, 85min, can avoid base substrate cutting crackle to occur.Teeming temperature, to 44 degree, suppresses (prolongation) unslaked lime digestion time, increases base substrate process of setting later strength, strengthens the plasticity of cutting base substrate.Other operation is identical with embodiment mono-.
embodiment tri-
The embodiment of the manufacture method of this aerated coal ash concrete base substrate and the difference of embodiment are, in step
iVrest bubbling time of getting angry is 32min, and the base substrate typing is highly over 750 mm, and the base substrate superelevation, can judge that the unslaked lime digestion time is slower, the base substrate phenomenon of feeling suffocated.In the 50min time, with diameter, be that the 5mm iron staff evenly marks the irrigation canals and ditches of together dark 400mm on the base substrate cross section at interval of 300 mm, teeming temperature, to 48 degree, is accelerated the unslaked lime digestion time, keeps the base substrate growth rate to synchronize with setting rate.Can avoid the base substrate crackle.The mould phenomenon appears once overflowing in the present embodiment, has done record.Smooth and easy for guaranteeing to get angry, avoid the phenomenon of feeling suffocated, before the slip bubbling, use professional drill rod to carry out artificial exhaust.
embodiment tetra-
The embodiment of the manufacture method of this aerated coal ash concrete base substrate and the difference of embodiment are, in step
iprepared in the unslaked lime process by the b that processes raw material, the second segment crusher adopts the three-region type ball mill, goes out unslaked lime 200 order fineness screen over-sizes 16% after mill, increases in time 3% of district's steel ball in ball mill.
embodiment five
The embodiment of the manufacture method of this aerated coal ash concrete base substrate and the difference of embodiment are, in step
iprepared in the unslaked lime process by the b that processes raw material, the second segment crusher adopts the three-region type ball mill, goes out the rear unslaked lime 200 order fineness screen over-sizes 16% of mill, adjusts ball mill and per hour grinds the ash amount, increases the waste material amount.
Claims (9)
1. the manufacture method of an aerated coal ash concrete base substrate, it comprises following step successively:
iprocess raw material
A dried coal powder ash slip
The dry powder coal ash is carried machine for producing slurry from dry powder material, adds water, and the quality proportioning of water and dry powder coal ash is
Dry powder coal ash 1; Water 6-8;
Water stirs and makes dried coal powder ash slip with the dry powder coal ash together with machine for producing slurry from dry powder material, and dried coal powder ash slip diffusibleness is 24～26cm; The dried coal powder ash slip prepared is delivered in large stirred pot and continues to stir;
B prepares unslaked lime
The particle diameter that utilizes jaw crusher will enter factory's unslaked lime is crushed to below 20mm, avoids using≤10 min Rapid ashs, the effective ACaO:55 of unslaked lime～70%; Oxidation rate: 15～25min; Digestion condition: 50～60 ℃; Through the ball mill fine grinding, after mill, unslaked lime is promoted to cementing feed bin by bucket elevator again;
The broken process with fine grinding is the broken jaw crusher that adopts of unslaked lime first paragraph, and it is 6 ± 2 mm that sheet separation, Hubei Province requires, and 8 mm sieve screening surpluses are less than 10%;
The second segment crusher adopts the three-region type ball mill, and in ball mill, grinding time is 3.5 ± 0.5 minutes; Going out the rear unslaked lime 200 order fineness requirement of mill is screen over-size
be not less than 10%;
C prepares aluminum paste
Aluminium powder and water are packed in the aluminum paste tank in proportion, stir and prepare aluminium powder liquid, and the quality proportioning of aluminium powder and water is
Aluminium 1; Water 6-8;
iIbatching
The proportion by weight of this aerated coal ash concrete blank raw material is
Dried coal powder ash slip 3770～3830; Unslaked lime 590～610;
Cement 50～70; Aluminium powder liquid 16～17;
First dried coal powder ash slip, unslaked lime and cement mixing time are not less than to 2min, and are stirred into the slurry of cast, the diffusibleness of the slurry of cast reaches 14～15%, adds aluminium powder liquid, the input steam preheating, and the temperature of the slip of cast is 45～49 ℃; Carrying out 0.5～1min stirs again;
iIIcast
Open the stirrer dispensing valve, will pour into a mould slip and be poured in mould vehicle;
The cast churning time requires: 5.2～5.6 min/ moulds; The stirrer running speed is: 1200～1400 turn/min; Teeming temperature: 45～47 ℃;
iVrest
Start timing from being poured into mould, within 3 minutes, mould vehicle moves on to the chamber of resting and pauses and to put in place, after this transfixion and avoid vibration within 60min
;get angry bubbling and progressively multiviscosisty condense, base substrate risings of expanding gradually, 30～40min base substrate afterwards no longer grows tall; Start timing from being poured into mould, the base substrate time of resting is 60～90min;
vthe base substrate upset demoulding
Upset goes bed material loop wheel machine side plate buildup to clean out in time; On base substrate after the upset loop wheel machine, base substrate and loop wheel machine side plate mutually near the time, the both sides spacing is controlled between 0～3mm, base substrate is by the overhead traveling crane demoulding of overturning;
vIcutting
Be poured into mould and complete it
after be no more than 90 minutes, start mould vehicle is sent to the chamber of resting, and carry out the cutting of the demoulding and base substrate within 2min, base substrate by the demoulding of upset overhead traveling crane after, hang to cutting work station, by Cutting dolly, carries, first carry out crosscut, removal liftout, then cut to the rip cutting position;
vIIremove bed material
After the base substrate rip cutting, by another cart transport to going to truck position, bed material sky; By removing end overhead traveling crane, the base substrate somersault is removed to the base substrate bed material;
vIIIsteam press maintenance
The upset loop wheel machine is after removing bed material, and steady running is to organizing into groups the steaming maintaining vehicle top, and when the upset loop wheel machine descends in the vertical direction, the base substrate side plate during apart from steaming maintaining vehicle 25～35mm, is fallen on steaming maintaining vehicle by base substrate and advances in autoclave; Close the door of autoclave, steam-cured through vacuumizing, pass into the steps such as middle pressure steam progressively boosts, constant voltage, step-down; The pressure vacuumized is not more than 0.06Mpa, starts to boost, and is not less than 2h pressure rising time, and the pressure that boosts is not less than 1.2Mpa; Start constant voltage, constant voltage time is not less than 6h, and pressure is not less than 1.2Mpa, and temperature is 174～200 ℃; The step-down time is less than 2h;
iXgo out still
After steam press maintenance completes, the finished product that maintenance is good is pulled out together with steam-cured dolly.
2. according to the manufacture method of the described aerated coal ash concrete base substrate of right 1, its steps characteristic is: in step
iwhen the b that processes raw material prepares unslaked lime, the second segment crusher adopts the three-region type ball mill, and in ball mill, grinding time is 3.5 ± 0.5 minutes; Going out the rear unslaked lime 200 order fineness requirement of mill is that screen over-size is
10-15%;in step
iVrest bubbling time of getting angry is 13～15min, and starting typing is highly 730～750mm; Start multiviscosisty gradually and sclerosis after 40min; The base substrate time of resting is 85～90min, and the rear base substrate temperature of resting is at 83～87 ℃; After mould enters the chamber of resting, observe every mould slip bubbling time, high and excessive mould phenomenon, must not appear owing in the height of getting angry.
3. according to the manufacture method of the described aerated coal ash concrete base substrate of right 1, its steps characteristic is: in step
iVrest bubbling time of getting angry is less than 10min, base substrate highly less than 660 mm that finalize the design, and the base substrate time of resting is 80～90min, 43～45 ℃ of teeming temperatures.
4. according to the manufacture method of the described aerated coal ash concrete base substrate of right 1, its steps characteristic is: in step
iVrest bubbling time of getting angry is greater than 30 min, and the base substrate typing highly surpasses 750 mm, and 45～55min can evenly mark with iron staff the irrigation canals and ditches of one dark 400 ± 100 mm, teeming temperature to 47-49 ℃ in the time on the base substrate cross section at interval of 300 mm.
5. according to the manufacture method of right 1,2,3 or 4 described aerated coal ash concrete base substrates, its steps characteristic is:
iprepared in the unslaked lime process by the b that processes raw material, the second segment crusher adopts the three-region type ball mill, goes out after mill when unslaked lime 200 order fineness screen over-sizes surpass 15%, increases in time 3% of district's steel ball in ball mill.
6. according to the manufacture method of right 1,2,3 or 4 described aerated coal ash concrete base substrates, its steps characteristic is: prepared in the unslaked lime process by the I b that processes raw material, the second segment crusher adopts the three-region type ball mill, when after going out to grind, unslaked lime 200 order fineness screen over-sizes surpass 15%, adjust ball mill and per hour grind the ash amount, increase the waste material amount.
7. according to the manufacture method of right 1,2,3 or 4 described aerated coal ash concrete base substrates, its steps characteristic is:
iprocess raw material
The quality proportioning of a dried coal powder ash slip is
Dry powder coal ash 1; Water 7;
The quality proportioning that c prepares aluminum paste is
Aluminium 1; Water 7;
iIthe proportion by weight of batching is
Dried coal powder ash slip 3800; Unslaked lime 600;
Cement 60; Aluminium powder liquid 16.5.
8. according to the manufacture method of the described aerated coal ash concrete base substrate of right 5, its steps characteristic is:
iprocess raw material
The quality proportioning of a dried coal powder ash slip is
Dry powder coal ash 1; Water 7;
The quality proportioning that c prepares aluminum paste is
Aluminium 1; Water 7;
iIthe proportion by weight of batching is
Dried coal powder ash slip 3800; Unslaked lime 600;
Cement 60; Aluminium powder liquid 16.5.
9. according to the manufacture method of the described aerated coal ash concrete base substrate of right 6, its steps characteristic is:
iprocess raw material
The quality proportioning of a dried coal powder ash slip is
Dry powder coal ash 1; Water 7;
The quality proportioning that c prepares aluminum paste is
Aluminium 1; Water 7;
iIthe proportion by weight of batching is
Dried coal powder ash slip 3800; Unslaked lime 600;
Cement 60; Aluminium powder liquid 16.5.
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| CN103758274A (en) * | 2014-01-16 | 2014-04-30 | 太原钢铁(集团)有限公司 | Production method of aerated concrete panel |
| CN103880471A (en) * | 2014-02-19 | 2014-06-25 | 太原钢铁(集团)有限公司 | Method for producing aerated concrete block |
| CN104860708A (en) * | 2015-05-08 | 2015-08-26 | 太原钢铁(集团)有限公司 | Method for steaming and curing a fly ash aerated concrete slab |
| CN104892018A (en) * | 2015-05-22 | 2015-09-09 | 太原钢铁(集团)有限公司 | Preparation method of autoclaved fly ash perforated brick |
| CN106631111A (en) * | 2016-12-29 | 2017-05-10 | 太原钢铁(集团)有限公司 | Aerated concrete slab and manufacturing method thereof |
| CN111231078A (en) * | 2020-01-20 | 2020-06-05 | 惠州市建达实业有限公司 | Air entrainment adobe peeling cycle device |
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| CN103758274A (en) * | 2014-01-16 | 2014-04-30 | 太原钢铁(集团)有限公司 | Production method of aerated concrete panel |
| CN103758274B (en) * | 2014-01-16 | 2015-12-02 | 太原钢铁(集团)有限公司 | A kind of manufacture method of aerated concrete panel |
| CN103880471A (en) * | 2014-02-19 | 2014-06-25 | 太原钢铁(集团)有限公司 | Method for producing aerated concrete block |
| CN104860708A (en) * | 2015-05-08 | 2015-08-26 | 太原钢铁(集团)有限公司 | Method for steaming and curing a fly ash aerated concrete slab |
| CN104892018A (en) * | 2015-05-22 | 2015-09-09 | 太原钢铁(集团)有限公司 | Preparation method of autoclaved fly ash perforated brick |
| CN104892018B (en) * | 2015-05-22 | 2016-09-21 | 太原钢铁(集团)有限公司 | A kind of preparation method of autoclaved fly ash porous brick |
| CN106631111A (en) * | 2016-12-29 | 2017-05-10 | 太原钢铁(集团)有限公司 | Aerated concrete slab and manufacturing method thereof |
| CN111231078A (en) * | 2020-01-20 | 2020-06-05 | 惠州市建达实业有限公司 | Air entrainment adobe peeling cycle device |
| CN115893970A (en) * | 2022-12-21 | 2023-04-04 | 宝武环科山西资源循环利用有限公司 | Method for utilizing kiln tail fly ash of lime rotary kiln |
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