CN106966674A - A kind of autoclaved fly ash brick and its production technology - Google Patents
A kind of autoclaved fly ash brick and its production technology Download PDFInfo
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- CN106966674A CN106966674A CN201710207309.1A CN201710207309A CN106966674A CN 106966674 A CN106966674 A CN 106966674A CN 201710207309 A CN201710207309 A CN 201710207309A CN 106966674 A CN106966674 A CN 106966674A
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- production technology
- fly ash
- flyash
- autoclaved fly
- quick lime
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of autoclaved fly ash brick and its production technology, the autoclaved fly ash brick is made up of the raw material of following weight proportion：Flyash 50%~80%, sand 10%~20%, quick lime 5%~15%；The preparation that the production technology includes flyash, sand and quick lime by raw material storing and preparation handles stand-by, and according to a certain ratio after dispensing stirring, adobe is made in digestion, shaping, then carries out steam press maintenance, whole production technology is completed after finished product stacking.The present invention passes through raw material rational proportion and production technology optimum process control parameter, apply to the environment-friendly type autoclaved fly ash brick that production line is produced, not only increase the quality of product, make controlling of production process stable, and production cost is reduced, production efficiency is substantially increased.Meanwhile, finished product resistance to compression, rupture strength are effectively increased, freeze thawing resistance and Investigation of drying shrinkage of high is improved.
Description
Technical field：
The present invention relates to building material technical field, more particularly to a kind of autoclaved fly ash brick and its production technology.
Background technology：
At present, in autoclaved fly ash brick production field, more using flyash, cementitious matter, aggregate as primary raw material, raw material adds
After work, according to obtaining refined flyash product after the agitated mixing of certain proportioning, digestion, shaping, steam curing.Because of ground system
Preferably, the reason such as various regions material quality, price, acquiring way is the main factor for determining flyash brick production technology.It is existing
The autoclaved fly ash brick of technology is, using flyash as primary raw material, to be equipped with appropriate rubble, thick slag (clinker), quick lime, remove mostly
Dirt ash (cleaner collect quick lime), stirred, digested by dispensing, is molded, it is steam-cured after obtain finished product, but still exist all
It is more not enough, the problem of such as production cost is high, shaping efficiency is low, finished product physicochemical property is poor, yield rate is low.Therefore, applicant provides
A kind of environment-friendly type autoclaved fly ash brick and its production technology, quality of item are stable, and controlling of production process is simple.
The content of the invention：
The purpose of the present invention aims to provide the environment-friendly type steam pressure powder that a kind of steady quality, production cost are low, production efficiency is high
Coal-dust brick and its production technology.
In order to solve the above technical problems, the present invention takes following technical scheme：
A kind of autoclaved fly ash brick, is made up of the raw material of following weight proportion：Flyash 50%~80%, sand 10%~
20%th, quick lime 5%~15%.
Preferably, autoclaved fly ash brick, is made up of the raw material of following weight proportion：Flyash 70%, sand 20%, quick lime
10%.
The invention provides a kind of production technology of autoclaved fly ash brick, stirred, digested by dispensing, is molded, steam pressure is supported
Finished product is obtained after shield, is comprised the following steps：
S1：Raw material storing and preparation：
(1) flyash：Flyash is divided into wet fly-ash and dry powder coal ash, and wet fly-ash is fed directly to storage in factory's heap canopy and treated
With dry powder coal ash stores stand-by after being transported into factory through Geldart-D particle to flyash storehouse；
(2) sand：Sand is transported in factory in heap canopy, is poured into by forklift in aggregate batcher storage bin hopper and is stored stand-by；
(3) quick lime：Particle diameter≤25mm lime particle is first broken into through jaw crusher using lump lime, through bucket
Formula elevator feeding quick lime is stored in storehouse, then quantitatively wears into pulverized limestone to ball mill feeding through electro-vibrating feeder, works as thing
Material fineness reaches 3500~4000cm2After/g, delivered to through conveying worm, bucket elevator in lime powder bin and store stand-by；
S2：Dispensing is stirred：By the wet fly-ash being stored in proportioning machine storage bin hopper and sandy plain material, send into and measure through belt feeder
Climb stand-by in bucket from mixer by belt conveyor after hopper metering, then with being stored in the powder in quick lime storehouse, according to certain
Proportioning is fed by conveying worm, stand-by after measuring hopper metering；
S3：Digestion：Above-mentioned mixer is climbed in bucket, material stand-by on Quick lime metering scale, the water after metering successively by
Order is discharged into two shaft pugmill mixer, and the compound feeding slaking silos after being stirred through forced action type are digested, during digestion
Between be 2~3h；
S4：Shaping：The good compound of above-mentioned digestion is rolled by edge runner and puddled, the compound belt after puddling
Machine sends into the hopper of forming machine, and adobe is made；
S5：Steam press maintenance：The marshalling rail that the adobe of above-mentioned forming is moved to before still kettle by steam pressure car through ferry bus
Road, the top-pushing mechanism of ferry bus parks track before steam pressure roof to still kettle after steam pressure car again after still kettle on track
Travelling hoist the steam pressure car for being loaded with adobe is pulled in steam press maintenance is carried out in still kettle；
S6：Finished product is stacked：Steam pressure car is drawn out to track after still kettle by maintenance by hoist engine after terminating together with said products
On, then by finished product fork truck piled up the finished bricks on steam pressure car in product stockyard, steam pressure car returns to setting machine and reused,
Complete whole production technology.
Flyash uses SiO in above-mentioned steps S1 raw material storings and preparation2Not less than 40%, Al2O315%~35%,
SO3No more than 2%, loss on ignition is not more than 15%, and fineness 0.045mm square hole screen screen over-sizes are not more than 45%.
Sand uses silicate building productses sand in above-mentioned steps S1 raw material storings and preparation, sand in being preferably, its grain
Footpath is not more than 2.5mm, and apparent density is more than 2500kg/m3, loose bulk density is more than 1350kg/m3。
CaO+MgO >=75%, MgO≤5%, CO of quick lime in above-mentioned steps S1 raw material storings and preparation2≤ 5%.
The control process of steam press maintenance is in above-mentioned steps S5：Boost 2h, constant pressure 7h, is depressured 1.5h, whole curing cycle
Amount to 11.5h including the turnover kettle time.
Above-mentioned steps S6 finished products can be divided into strength grade 10MPa, 15MPa, 20MPa standard brick and voidage by specification
25% plain hollow brick.
Constant-pressure pressure is 1.2~1.3MPa during the steam press maintenance, and temperature is 188 DEG C.
The beneficial effects of the present invention are：
(1) by raw material rational proportion and production technology optimum process control parameter, the ring that production line is produced is applied to
Guarantor's type autoclaved fly ash brick, not only increases the quality of product, makes controlling of production process stable, and reduces production cost,
Substantially increase production efficiency.
(2) raw material of the present invention has selected sand in silicate building productses use, can save cement during building use, carry
The compactness and intensity of high concrete and mortar, so as to increase the consumption of flyash, reach as high as 80%, therefore, effectively
Finished product resistance to compression, rupture strength are added, freeze thawing resistance and Investigation of drying shrinkage of high is improved.
Brief description of the drawings：
Fig. 1 is the production technological process of autoclaved fly ash brick of the present invention.
Embodiment：
Technical scheme is described in detail below by specific embodiment combination accompanying drawing.
Embodiment 1
A kind of autoclaved fly ash brick (strength grade 10MPa), is made up of the raw material of following weight proportion：Flyash 80%,
Sand 10%, quick lime 10%.
As shown in figure 1, the production technology of the autoclaved fly ash brick, comprises the following steps：
S1：Raw material storing and preparation：
(1) flyash：Flyash is divided into wet fly-ash and dry powder coal ash, and wet fly-ash is fed directly to storage in factory's heap canopy and treated
With dry powder coal ash stores stand-by after being transported into factory through Geldart-D particle to flyash storehouse；
(2) sand：Sand is transported in factory in heap canopy, is poured into by forklift in aggregate batcher storage bin hopper and is stored stand-by；
(3) quick lime：Particle diameter≤25mm lime particle is first broken into through jaw crusher using lump lime, through bucket
Formula elevator feeding quick lime is stored in storehouse, then quantitatively wears into pulverized limestone to ball mill feeding through electro-vibrating feeder, works as thing
Material fineness reaches 3500~4000cm2After/g, delivered to through conveying worm, bucket elevator in lime powder bin and store stand-by；
S2：Dispensing is stirred：By the wet fly-ash being stored in proportioning machine storage bin hopper and sandy plain material, send into and measure through belt feeder
Climb stand-by in bucket from mixer by belt conveyor after hopper metering, then with being stored in the powder in quick lime storehouse, according to certain
Proportioning is fed by conveying worm, stand-by after measuring hopper metering；
S3：Digestion：Above-mentioned mixer is climbed in bucket, material stand-by on Quick lime metering scale, the water after metering successively by
Order is discharged into two shaft pugmill mixer, and the compound feeding slaking silos after being stirred through forced action type are digested, during digestion
Between be 2.5h；
S4：Shaping：The good compound of above-mentioned digestion is rolled by edge runner and puddled, the compound belt after puddling
Machine sends into the hopper of forming machine, and adobe is made；
S5：Steam press maintenance：The marshalling rail that the adobe of above-mentioned forming is moved to before still kettle by steam pressure car through ferry bus
Road, the top-pushing mechanism of ferry bus parks track before steam pressure roof to still kettle after steam pressure car again after still kettle on track
Travelling hoist the steam pressure car for being loaded with adobe is pulled in steam press maintenance is carried out in still kettle；Wherein：The control of steam press maintenance
Process is：Boost 2h, constant pressure 7h (constant-pressure pressure is 1.2~1.3MPa, and temperature is 188 DEG C), is depressured 1.5h, whole curing cycle
Amount to 11.5h including the turnover kettle time；
S6：Finished product is stacked：Steam pressure car is drawn out to track after still kettle by maintenance by hoist engine after terminating together with said products
On, then by finished product fork truck piled up the finished bricks on steam pressure car in product stockyard, steam pressure car returns to setting machine and reused,
Complete whole production technology.
Embodiment 2
A kind of autoclaved fly ash brick (strength grade 15MPa), is made up of the raw material of following weight proportion：Flyash 70%,
Sand 20%, quick lime 10%.
As shown in figure 1, the production technology of the autoclaved fly ash brick, comprises the following steps：
S1：Raw material storing and preparation：
(1) flyash：Flyash is divided into wet fly-ash and dry powder coal ash, and wet fly-ash is fed directly to storage in factory's heap canopy and treated
With dry powder coal ash stores stand-by after being transported into factory through Geldart-D particle to flyash storehouse；
(2) sand：Sand is transported in factory in heap canopy, is poured into by forklift in aggregate batcher storage bin hopper and is stored stand-by；
(3) quick lime：Particle diameter≤25mm lime particle is first broken into through jaw crusher using lump lime, through bucket
Formula elevator feeding quick lime is stored in storehouse, then quantitatively wears into pulverized limestone to ball mill feeding through electro-vibrating feeder, works as thing
Material fineness reaches 3500~4000cm2After/g, delivered to through conveying worm, bucket elevator in lime powder bin and store stand-by；
S2：Dispensing is stirred：By the wet fly-ash being stored in proportioning machine storage bin hopper and sandy plain material, send into and measure through belt feeder
Climb stand-by in bucket from mixer by belt conveyor after hopper metering, then with being stored in the powder in quick lime storehouse, according to certain
Proportioning is fed by conveying worm, stand-by after measuring hopper metering；
S3：Digestion：Above-mentioned mixer is climbed in bucket, material stand-by on Quick lime metering scale, the water after metering successively by
Order is discharged into two shaft pugmill mixer, and the compound feeding slaking silos after being stirred through forced action type are digested, during digestion
Between be 3h；
S4：Shaping：The good compound of above-mentioned digestion is rolled by edge runner and puddled, the compound belt after puddling
Machine sends into the hopper of forming machine, and adobe is made；
S5：Steam press maintenance：The marshalling rail that the adobe of above-mentioned forming is moved to before still kettle by steam pressure car through ferry bus
Road, the top-pushing mechanism of ferry bus parks track before steam pressure roof to still kettle after steam pressure car again after still kettle on track
Travelling hoist the steam pressure car for being loaded with adobe is pulled in steam press maintenance is carried out in still kettle；Wherein：The control of steam press maintenance
Process is：Boost 2h, constant pressure 7h (constant-pressure pressure is 1.2~1.3MPa, and temperature is 188 DEG C), is depressured 1.5h, whole curing cycle
Amount to 11.5h including the turnover kettle time；
S6：Finished product is stacked：Steam pressure car is drawn out to track after still kettle by maintenance by hoist engine after terminating together with said products
On, then by finished product fork truck piled up the finished bricks on steam pressure car in product stockyard, steam pressure car returns to setting machine and reused,
Complete whole production technology.
Embodiment 3
A kind of autoclaved fly ash brick (strength grade 20MPa), is made up of the raw material of following weight proportion：Flyash 65%,
Sand 20%, quick lime 15%.
As shown in figure 1, the production technology of the autoclaved fly ash brick, comprises the following steps：
S1：Raw material storing and preparation：
(1) flyash：Flyash is divided into wet fly-ash and dry powder coal ash, and wet fly-ash is fed directly to storage in factory's heap canopy and treated
With dry powder coal ash stores stand-by after being transported into factory through Geldart-D particle to flyash storehouse；
(2) sand：Sand is transported in factory in heap canopy, is poured into by forklift in aggregate batcher storage bin hopper and is stored stand-by；
(3) quick lime：Particle diameter≤25mm lime particle is first broken into through jaw crusher using lump lime, through bucket
Formula elevator feeding quick lime is stored in storehouse, then quantitatively wears into pulverized limestone to ball mill feeding through electro-vibrating feeder, works as thing
Material fineness reaches 3500~4000cm2After/g, delivered to through conveying worm, bucket elevator in lime powder bin and store stand-by；
S2：Dispensing is stirred：By the wet fly-ash being stored in proportioning machine storage bin hopper and sandy plain material, send into and measure through belt feeder
Climb stand-by in bucket from mixer by belt conveyor after hopper metering, then with being stored in the powder in quick lime storehouse, according to certain
Proportioning is fed by conveying worm, stand-by after measuring hopper metering；
S3：Digestion：Above-mentioned mixer is climbed in bucket, material stand-by on Quick lime metering scale, the water after metering successively by
Order is discharged into two shaft pugmill mixer, and the compound feeding slaking silos after being stirred through forced action type are digested, during digestion
Between be 2h；
S4：Shaping：The good compound of above-mentioned digestion is rolled by edge runner and puddled, the compound belt after puddling
Machine sends into the hopper of forming machine, and adobe is made；
S5：Steam press maintenance：The marshalling rail that the adobe of above-mentioned forming is moved to before still kettle by steam pressure car through ferry bus
Road, the top-pushing mechanism of ferry bus parks track before steam pressure roof to still kettle after steam pressure car again after still kettle on track
Travelling hoist the steam pressure car for being loaded with adobe is pulled in steam press maintenance is carried out in still kettle；Wherein：The control of steam press maintenance
Process is：Boost 2h, constant pressure 7h (constant-pressure pressure is 1.2~1.3MPa, and temperature is 188 DEG C), is depressured 1.5h, whole curing cycle
Amount to 11.5h including the turnover kettle time；
S6：Finished product is stacked：Steam pressure car is drawn out to track after still kettle by maintenance by hoist engine after terminating together with said products
On, then by finished product fork truck piled up the finished bricks on steam pressure car in product stockyard, steam pressure car returns to setting machine and reused,
Complete whole production technology.
According to building material industry standard JC239-2001《Flyash brick》Perform, 1~embodiment of above-described embodiment 3 is produced
Autoclaved fly ash brick carries out quality testing, obtains intensity and frost resistance and the dry result such as table 1 below shunk：
From the foregoing, it will be observed that the compression strength of autoclaved fly ash brick produced by the invention is more than or equal to 10~20MPa, rupture strength
More than or equal to 2.5~4.0MPa, freeze thawing resistance intensity is more than or equal to 8~16MPa, and the dry mass of brick is lost less than or equal to 2%, and
Drying shrinkage value is less than or equal to 0.65~0.75mm/m, therefore, effectively increases finished product resistance to compression, rupture strength, improves freeze proof
Melt and Investigation of drying shrinkage of high.
Claims (9)
1. a kind of autoclaved fly ash brick, it is characterised in that：It is made up of the raw material of following weight proportion：Flyash 50%~80%,
Sand 10%~20%, quick lime 5%~15%.
2. a kind of autoclaved fly ash brick according to claim 1, it is characterised in that：By the raw material group of following weight proportion
Into：Flyash 70%, sand 20%, quick lime 10%.
3. a kind of production technology of autoclaved fly ash brick according to claim 1 or 2, stirred, digested by dispensing, into
Finished product is obtained after type, steam press maintenance, it is characterised in that：Comprise the following steps：
S1：Raw material storing and preparation：
(1) flyash：Flyash is divided into wet fly-ash and dry powder coal ash, and wet fly-ash is fed directly to stored for future use in factory's heap canopy,
Dry powder coal ash stores stand-by after being transported into factory through Geldart-D particle to flyash storehouse；
(2) sand：Sand is transported in factory in heap canopy, is poured into by forklift in aggregate batcher storage bin hopper and is stored stand-by；
(3) quick lime：Particle diameter≤25mm lime particle is first broken into through jaw crusher using lump lime, is carried through bucket type
The machine of liter feeding quick lime is stored in storehouse, then quantitatively wears into pulverized limestone to ball mill feeding through electro-vibrating feeder, when material is thin
Degree reaches 3500~4000cm2After/g, delivered to through conveying worm, bucket elevator in lime powder bin and store stand-by；
S2：Dispensing is stirred：By the wet fly-ash being stored in proportioning machine storage bin hopper and sandy plain material, through belt feeder feeding metering hopper
Climb stand-by in bucket from mixer by belt conveyor after metering, then with being stored in the powder in quick lime storehouse, according to a certain ratio
It is fed by conveying worm, it is stand-by after measuring hopper metering；
S3：Digestion：Above-mentioned mixer is climbed in bucket, material stand-by on Quick lime metering scale, the water after metering successively in order
It is discharged into two shaft pugmill mixer, the compound feeding slaking silos after being stirred through forced action type are digested, and digestion time is 2
~3h；
S4：Shaping：The good compound of above-mentioned digestion is rolled by edge runner and puddled, the compound after puddling is sent with belt feeder
Enter the hopper of forming machine, adobe is made；
S5：Steam press maintenance：The marshalling track that the adobe of above-mentioned forming is moved to before still kettle by steam pressure car through ferry bus, pendulum
The top-pushing mechanism of car is crossed by track before steam pressure roof to still kettle, is parked on track after steam pressure car again by the movement after still kettle
The steam pressure car for being loaded with adobe is pulled in and steam press maintenance is carried out in still kettle by formula hoist engine；
S6：Finished product is stacked：Steam pressure car is drawn out to after still kettle on track by maintenance after terminating by hoist engine together with said products, then
The finished bricks on steam pressure car are piled up in product stockyard by finished product fork truck, steam pressure car returns to setting machine and reused, i.e., complete
Into whole production technology.
4. a kind of production technology of autoclaved fly ash brick according to claim 3, it is characterised in that：The step S1 former materials
Flyash uses SiO in material storage and preparation2Not less than 40%, Al2O315%~35%, SO3No more than 2%, loss on ignition is little
In 15%, fineness 0.045mm square hole screen screen over-sizes are not more than 45%.
5. a kind of production technology of autoclaved fly ash brick according to claim 3, it is characterised in that：The step S1 former materials
Sand during sand is used using silicate building productses in material storage and preparation, its particle diameter is not more than 2.5mm, and apparent density is more than
2500kg/m3, loose bulk density is more than 1350kg/m3。
6. a kind of production technology of autoclaved fly ash brick according to claim 3, it is characterised in that：The step S1 former materials
CaO+MgO >=75%, MgO≤5%, CO of quick lime in material storage and preparation2≤ 5%.
7. a kind of production technology of autoclaved fly ash brick according to claim 3, it is characterised in that：Steamed in the step S5
Pressure maintenance control process be：Boost 2h, constant pressure 7h, is depressured 1.5h, amounts to including the turnover kettle time whole curing cycle
11.5h。
8. a kind of production technology of autoclaved fly ash brick according to claim 3, it is characterised in that：The step S6 finished products
Strength grade 10MPa, 15MPa, 20MPa standard brick and the plain hollow brick of voidage 25% can be divided into by specification.
9. a kind of production technology of autoclaved fly ash brick according to claim 7, it is characterised in that：The steam press maintenance mistake
Constant-pressure pressure is 1.2~1.3MPa in journey, and temperature is 188 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710207309.1A CN106966674A (en) | 2017-03-31 | 2017-03-31 | A kind of autoclaved fly ash brick and its production technology |
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| CN201710207309.1A CN106966674A (en) | 2017-03-31 | 2017-03-31 | A kind of autoclaved fly ash brick and its production technology |
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| CN106966674A true CN106966674A (en) | 2017-07-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619292A (en) * | 2017-09-27 | 2018-01-23 | 宿州市埇桥区三八街道九里村兴农服务有限公司 | A kind of freeze proof hollow powder coal ash brick and its production method |
| CN111391071A (en) * | 2020-04-26 | 2020-07-10 | 平罗县越晟建材有限公司 | Environment-friendly brick produced by using industrial waste and device thereof |
| CN113045279A (en) * | 2021-02-26 | 2021-06-29 | 海南广胜新型建材有限公司 | Autoclaved sand-lime brick and preparation method thereof |
| CN114773018A (en) * | 2022-05-12 | 2022-07-22 | 吉林市市政建设集团有限公司 | Production process for manufacturing gray brick by using fly ash |
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| CN101468492A (en) * | 2007-12-28 | 2009-07-01 | 曾红伟 | Fly ash steam-pressing brisk production chain |
| CN101672084A (en) * | 2009-08-14 | 2010-03-17 | 准格尔旗粉煤灰煤矸石研发中心 | Fly ash stilled brick and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619292A (en) * | 2017-09-27 | 2018-01-23 | 宿州市埇桥区三八街道九里村兴农服务有限公司 | A kind of freeze proof hollow powder coal ash brick and its production method |
| CN111391071A (en) * | 2020-04-26 | 2020-07-10 | 平罗县越晟建材有限公司 | Environment-friendly brick produced by using industrial waste and device thereof |
| CN113045279A (en) * | 2021-02-26 | 2021-06-29 | 海南广胜新型建材有限公司 | Autoclaved sand-lime brick and preparation method thereof |
| CN114773018A (en) * | 2022-05-12 | 2022-07-22 | 吉林市市政建设集团有限公司 | Production process for manufacturing gray brick by using fly ash |
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Application publication date: 20170721 |