CN209307235U - The process units of flyash for concrete blend composition - Google Patents
The process units of flyash for concrete blend composition Download PDFInfo
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- CN209307235U CN209307235U CN201821539928.7U CN201821539928U CN209307235U CN 209307235 U CN209307235 U CN 209307235U CN 201821539928 U CN201821539928 U CN 201821539928U CN 209307235 U CN209307235 U CN 209307235U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The utility model discloses a kind of process units of flyash for concrete blend composition, including pass through the sequentially connected coal-burning boiler of process pipe, wheel disc loader, spray column, drying device, mixing device, finished bin, and the Raymond mill being connected with mixing device；The utility model has the advantages that: 1) provide it is a kind of particularly suitable for concrete blending flyash process units, using the device can produce blending property and appearance color be much better than be conventionally used to concrete blending coal-fired by-product flyash extraordinary flyash；2) the device overall structure of the utility model is simple, is easy to industrially manufacture and promote, while durability is strong, is not easy to damage because of high temperature.
Description
Technical field
The utility model relates to a kind of process units of flyash, especially a kind of flyash for being exclusively used in concrete blending
Process units.
Background technique
Flyash, is the fine ash that catching is got off from the flue gas after coal combustion, and flyash is the main of coal-burning boiler discharge
Solid waste.Its main component includes SiO2、Al2O3、FeO、Fe2O3、CaO、TiO2Deng.With the development of industry, coal-burning boiler
Flyash discharge capacity increase year by year, become one of biggish industrial residue of the current discharge capacity in China.A large amount of flyash is such as not added
Processing will generate fugitive dust, pollute atmosphere；Silt up if being discharged into water system and will cause river, and toxic chemical substance therein can also
It causes damages to human body and biology.
The optimum treatment mode of flyash is resource utilization, usually using flyash as concrete in such as current industry
Blend composition.Studies have shown that adding coal ash replaces part of cement or fine aggregate in concrete, cost can not only be reduced, and
And can be improved the workability of concrete, impermeability, gas, Sulphate-resistant property and chemistry-resistant characteristic are improved, is reduced
The heat of hydration, improves the high temperature resistance of concrete, mitigates particle separation and bleed phenomenon, reduce contraction and the cracking of concrete with
And inhibit corrosion of the stray electrical current to reinforcement in concrete.
Utility model content
To provide a kind of fine coal ash products for being more suitable as concrete blend composition, the utility model provides one kind and is used for
The production method of the flyash of concrete blend composition.
The technical scheme adopted by the utility model is the production method of the flyash for concrete blend composition, including
Following steps:
A, powdery coal is sent into coal-burning boiler and is burnt, ignition temperature obtains after full combustion at 900 DEG C or more
Coal ash and cinder after burning；
B, coal ash after being burnt using the Water-Curta in Cooling that cool water shower generates, obtains coal ash paste；
C, coal ash paste is dried to constant weight, coal ash after being dried；
D, coal ash after drying and powdery clinker are mixed by a certain percentage to get the concrete blend composition that is used for
Flyash.
Inventor proposes that for a long time, flyash is all as a kind of secondary useless resource recycling in the blending of concrete.So
And with the development of society, industrially constantly proposing new requirement to the quality of concrete, ready-made secondary waste fly ash is utilized
Adding Concrete has been difficult to meet the needs of development of modern industry, and inventor thinks it is necessary to which changing at present is pair to flyash
The intrinsic understanding of useless resource, is studied and is produced using flyash as a kind of product so that its property be more adaptive to it is high-end
Concrete or the needs of new concrete blending.
For this purpose, applicant has developed the production method of the flyash for concrete blend composition of the utility model, the party
The maximum feature of method is treated flyash as a kind of product, changes its property by changing the producing method of flyash.
For example, the flyash currently used for concrete blending is collected from the coal combustions industry such as major coal-fired power plant or boiler factory
Byproduct, and coal-burning utilities are in order to control the content of the nitrogen in the flue gas that coal combustion is discharged, sulphur compound, reduce energy consumption and set
Standby load is required to reduce ignition temperature as far as possible under the premise of technique allows, and most enterprises control coal combustion temperature
At 800 DEG C or less.It observes in the experiment that inventor carries out, when ignition temperature is lower than 800 DEG C, is obtained after coal dust full combustion
Flyash be kermesinus, and the flyash that ignition temperature obtains between 800 DEG C~900 DEG C is usually bronzing, color tool
There is nuance.By this phenomenon, inventor has carried out further experiment, it is found that the color of flyash can be with ignition temperature
Variation and slight change occurs, by being continuously increased ignition temperature, such as when ignition temperature is higher than 900 DEG C, flyash face
Color is brown to taupe, and when being higher than 1050 DEG C, color is dark-grey brown or dark brown.Importantly, inventor also sends out
The property of existing flyash can also change with the raising of ignition temperature, be mainly reflected in the rising powder with coal combustion temperature
Coal ash fineness reduces, and water demand ratio reduces, and loss on ignition reduces, and activity index improves, which becomes in 800~1100 DEG C of sections
Change more significant.
Therefore inventor proposes to improve the property of flyash by promoting coal dust firing temperature, and experiment shows preferably square
Case is to control coal dust firing temperature at 1050 DEG C or more, it is contemplated that current main-stream equipment and the load problem of pipeline are preferably by coal
Powder ignition temperature is controlled at 1050~1100 DEG C.
Furthermore inventor also found, the different of the type of cooling of the flyash generated by ultrahigh temperature combustion also can be to fine coal
The color and performance of ash have an impact, by taking ignition temperature is the flyash of 1050 DEG C of generations as an example, if by natural cooling,
It is taupe after cooling；And the flyash by being dried again after cooling water fast cooling is dark brown, and water demand ratio is wanted
Lower than the identical flyash of natural cooling.
Finally, then with certain proportion powdery clinker is added and is uniformly mixed is to obtain blending for concrete for the utility model
The flyash of material.Wherein the powdery clinker is gained after wearing into fine powder by clinker, and it is pyrometallurgical processes that clinker, which is also known as slag,
The melt for floating on the liquids such as metal surface of middle generation is formed with oxide (silica, aluminium oxide, calcium oxide, oxygen
Change magnesium) based on, also often contain sulfide and carries a small amount of metal secretly.Experiments have shown that the blending of clinker and flyash can make concrete de-
Mould is fast, early stage later strength is high, improves the impermeability of concrete, frost resistance, increases slump.
It should be noted that in the above scheme, need to cool down in time to from coal ash after the burning come out in coal-burning boiler,
To avoid coal ash natural cooling after burning, therefore in preferably step B after the rigid catalytic combustion of cooling water water curtain at the time of coal ash, combustion
Ignition temperature of the surface temperature of coal ash lower than step A is no more than 150 DEG C after burning, to accomplish the timeliness that cools down.
Simultaneously in water curtain generating device, the spray of water curtain should be adjusted according to the inlet amount of coal ash after burning and initial temperature
Leaching amount and cooling water temperature, to accomplish fast cooling.Experiment show in step B coal ash after the rigid catalytic combustion of cooling water water curtain when
Carving to after burning coal ash surface temperature is reduced to 80 DEG C of times experienced to be no more than 35s, is controlled with this rate of temperature fall standard
The spray flow and temperature of cooling water can ensure that flyash property is unaffected.
Experiment shows demoulding of the mixing proportion to concrete of powdery clinker, early stage later strength, impermeability, frost resistance,
Slump has a major impact, and inventor is experimentally determined, is suitable for controlling the mass ratio of coal ash after powdery clinker and drying 1:
1.15~1.30.
The invention also discloses a kind of process units of flyash for concrete blend composition, including are sequentially connected
Coal-burning boiler, wheel disc loader, spray column, drying device, mixing device, finished bin；The spray column is provided with fume pipe
Road.
Wherein the main function of wheel disc loader first is that after the ultrahigh temperature combustion that coal-burning boiler air outlet ejects
Coal ash is buffered, and is prevented coal ash directly into follow-up equipment, is led to equipment damage；On the other hand, by wheel disc loader into
Row is gradually discharged again after collecting caching, it can be achieved that be continuously slowly fed to spray equipment, cold convenient for the uniformly spray of coal ash
But.
In order to realize the above functions, the structure of wheel disc loader may is that the wheel disc loader include feed chamber and
Rotatable wheel disc in feed chamber is set；The wheel disc includes vertical rotation axis and can be with the disk of vertical rotation axis rotation
Body is vertically fixed several partitions in vertical rotation axis, and partition one end is fixedly connected with vertical rotation axis, and the other end extends to disk
Body edge, so that the inner space of feed chamber is divided into several cache slots by disk body and partition；It is set on the feed chamber
It is equipped with coal ash import and coal ash outlet.
When work, coal ash sprays into feed chamber from air outlet after the burning from coal-burning boiler, immediately by spacers block,
It rotates together into corresponding cache slot and with wheel disc to the coal ash outlet port on feed chamber, and is left from coal ash outlet
Wheel disc loader enters in spray column, to realize above-mentioned function.
To realize Homogeneous charge, the space of single cache slot should be reduced to the greatest extent, therefore the quantity of partition can as far as possible more one
A bit, preferably equivalent at least 6 partitions.The coal ash to prevent superhigh temperature damages wheel disc simultaneously, and wheel disc should use high temperature resistant material, such as may be used
Use manganese as wheel disc material.
On the other hand, since the embodiment of the utility model coal dust firing temperature is very high, nitrogen sulfur compound contains in flue gas
Amount also can accordingly rise, and flue gas exhausting pipe line can be arranged on spray column, and the corresponding processing of path setting of flue gas emission is set
Standby, such as electrostatic precipitator, desulfurization deacidifying device etc. handles flue gas.
Since coal ash has very big power after the burning from coal-burning boiler air outlet, can push under certain condition
The rotation of wheel disc, therefore technical staff can be arranged or be not provided with according to the actual situation, with or without the use of wheel dish driving rotation
Device.
The beneficial effects of the utility model are: 1) provide a kind of production of flyash particularly suitable for concrete blending
Device can produce blending property using the device and appearance color is much better than the coal-fired by-product for being conventionally used to concrete and blending
The extraordinary flyash of flyash；2) the device overall structure of the utility model is simple, is easy to industrially manufacture and promote, simultaneously
Durability is strong, is not easy to damage because of high temperature；3) from the point of view of current industry Situation, coal-burning chemical enterprise, especially medium-sized and small enterprises, by
Lack core technology in itself, the quality and practical effect of by-product flyash are below large-scale power station by-product flyash
Average level causes the coal-fired by-product of this kind of enterprise to be difficult to sell, this undoubtedly forms huge pressure to the existence of this type enterprise
Power is also unfavorable for the sustainable development of industry；The utility model is that such enterprise produces or by-product high-quality coal ash lifting supplies
Technical Reference, the industry issue that will largely solve coal-burning chemical enterprise by-product flyash and be difficult to be utilized.4) at present
The flyash that middle-size and small-size coal-burning chemical enterprise generates almost 100% is unable to get utilization, and the illegal enterprise in part is by small part fine coal
It is sold after ash and second class powered coal ash blending, and under the pressure of the caving-in bash of existence, in addition 90% flyash can only all be stacked, nothing
Method processing, does not only take up a large amount of soils and also generates serious fugitive dust, cause serious harm to environment；Disclosure of the invention can
It helps enterprise to solve the problems, such as the processing of by-product flyash, solves problem of environmental pollution, while also solving the high-quality powder of Cement Market
The economic problems of coal ash shortage, realize the comprehensive utilization of solid waste, have real and significant environmental protection and economic significance, symbol
Close the important sustainable development thought for practising General Secretary's blue montains and green waters.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the process units of the flyash for concrete blend composition of the utility model.
Fig. 2 is wheel disc loader structural schematic diagram.
Fig. 3 is the top view of Fig. 2.
In the figure, it is marked as 1- coal-burning boiler, 2- wheel disc loader, 201- are fed chamber, 202- wheel disc, 2021- turns vertically
Moving axis, 2022- disk body, 2023- partition, 3- spray column, 301- flue, 302- electrostatic precipitator, 4- drying device, 5- are mixed
Expect device, 6- finished bin, 7- Raymond mill.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, Figure 2, Figure 3 shows, the process units of the flyash for concrete blend composition of the utility model, including
Pass through the sequentially connected coal-burning boiler 1 of process pipe, wheel disc loader 2, spray column 3, drying device 4, mixing device 5, finished product
Storehouse 6；The spray column 3 is provided with flue 301；The wheel disc loader 2 includes feed chamber 201 and is arranged in feed chamber
Rotatable material in room 201 is the wheel disc 202 of manganese；The wheel disc 202 includes vertical rotation axis 2021 and can turn with vertical
The disk body 2022 that moving axis 2021 rotates, is vertically fixed 6 partitions 2023 in vertical rotation axis 2021,2023 one end of partition and perpendicular
Straight rotation axis 2021 is fixedly connected, and the other end extends to 2022 edge of disk body, so that the inner space of feed chamber 201 is by disk body
2022 and partition 2023 be divided into 6 cache slots；Coal ash import and coal ash outlet are provided on the feed chamber 201.
Embodiment one:
Carry out the production of the flyash for concrete blend composition in accordance with the following steps using above-mentioned apparatus:
1, the powdery coal that fineness is 4% (R90) is sent into coal-burning boiler and is burnt, ignition temperature is 900 DEG C, is filled
Coal ash and cinder after being burnt after divided combustion；
2, coal ash is sprayed into 201 in the feed chamber of wheel disc loader 2 by air outlet after burning, and is hindered immediately by partition 2023
Gear is rotated together into corresponding cache slot and by Wind power propelling wheel disc 202 to the coal ash outlet position on feed chamber 201
It sets, under the action of exhaust fan, the coal ash in cache slot gradually leaves wheel disc loader 2 from coal ash outlet and constantly enters spray column
In 3.The temperature of coal ash is 790 DEG C after coal ash exit measures burning.
3, several atomizers, shape after the cooling water that temperature is 20 DEG C is sprayed by atomizer are provided in spray column 3
It contacts at water curtain with the high temperature coal ash of entrance to carry out fast cooling to coal ash.The spray flow of control cooling water is connecing coal ash
26s surface temperature after touching water curtain is reduced to 80 DEG C.3 bottom of spray column is collected by the coal ash slurry of water curtain collecting,
The flue gas at large caught then enters flue 301.Electrostatic precipitator 302 and desulfurization depickling dress are provided on flue 301
It sets, flue gas can be discharged after processing is up to standard.
4, it collects to send after the coal ash slurry of 3 bottom of spray column is pumped out to drying device 4 and be dried, it is dry to perseverance
It is sent to after weight in mixing device 5.Clinker forms powdery clinker after Raymond mill 7 is levigate and is sent into mixing device 5 and drying simultaneously
Coal ash is sufficiently mixed afterwards, and the mass ratio of coal ash is 1:1.15 after powdery clinker and drying.It is practical new that this is obtained after mixing
The flyash for concrete blend composition of type, is sent to finished bin 6 and is stored.
5, refined flyash is detected, testing result is shown in Table 1.
Embodiment two:
Carry out the production of the flyash for concrete blend composition in accordance with the following steps using above-mentioned apparatus:
1, the powdery coal that fineness is 4% (R90) to be sent into coal-burning boiler 1 and is burnt, ignition temperature is 1050 DEG C,
Coal ash and cinder after being burnt after full combustion；
2, coal ash is sprayed into 201 in the feed chamber of wheel disc loader 2 by air outlet after burning, and is hindered immediately by partition 2023
Gear is rotated together into corresponding cache slot and by Wind power propelling wheel disc 202 to the coal ash outlet position on feed chamber 201
It sets, under the action of exhaust fan, the coal ash in cache slot gradually leaves wheel disc loader 2 from coal ash outlet and constantly enters spray column
In 3.The temperature of coal ash is 914 DEG C after coal ash exit measures burning.
3, several atomizers, shape after the cooling water that temperature is 20 DEG C is sprayed by atomizer are provided in spray column 3
It contacts at water curtain with the high temperature coal ash of entrance to carry out fast cooling to coal ash.The spray flow of control cooling water is connecing coal ash
24s surface temperature after touching water curtain is reduced to 80 DEG C.3 bottom of spray column is collected by the coal ash slurry of water curtain collecting,
The flue gas at large caught then enters flue 301.Electrostatic precipitator 302 and desulfurization depickling dress are provided on flue 301
It sets, flue gas can be discharged after processing is up to standard.
4, it collects to send after the coal ash slurry of 3 bottom of spray column is pumped out to drying device 4 and be dried, it is dry to perseverance
It is sent to after weight in mixing device 5.Clinker forms powdery clinker after Raymond mill 7 is levigate and is sent into mixing device 5 and drying simultaneously
Coal ash is sufficiently mixed afterwards, and the mass ratio of coal ash is 1:1.22 after powdery clinker and drying.It is practical new that this is obtained after mixing
The flyash for concrete blend composition of type, is sent to finished bin 7 and is stored.
5, refined flyash is detected, testing result is shown in Table 1.
Embodiment three:
Carry out the production of the flyash for concrete blend composition in accordance with the following steps using above-mentioned apparatus:
1, the powdery coal that fineness is 4% (R90) to be sent into coal-burning boiler 1 and is burnt, ignition temperature is 1100 DEG C,
Coal ash and cinder after being burnt after full combustion；
2, coal ash is sprayed into 201 in the feed chamber of wheel disc loader 2 by air outlet after burning, and is hindered immediately by partition 2023
Gear is rotated together into corresponding cache slot and by Wind power propelling wheel disc 202 to the coal ash outlet position on feed chamber 201
It sets, under the action of exhaust fan, the coal ash in cache slot gradually leaves wheel disc loader 2 from coal ash outlet and constantly enters spray column
In 3.The temperature of coal ash is 954 DEG C after coal ash exit measures burning.
3, several atomizers, shape after the cooling water that temperature is 20 DEG C is sprayed by atomizer are provided in spray column 3
It contacts at water curtain with the high temperature coal ash of entrance to carry out fast cooling to coal ash.The spray flow of control cooling water is connecing coal ash
17s surface temperature after touching water curtain is reduced to 80 DEG C.3 bottom of spray column is collected by the coal ash slurry of water curtain collecting,
The flue gas at large caught then enters flue 301.Electrostatic precipitator 302 and desulfurization depickling dress are provided on flue 301
It sets, flue gas can be discharged after processing is up to standard.
4, it collects to send after the coal ash slurry of 3 bottom of spray column is pumped out to drying device 4 and be dried, it is dry to perseverance
It is sent to after weight in mixing device 5.Clinker forms powdery clinker after Raymond mill 7 is levigate and is sent into mixing device 5 and drying simultaneously
Coal ash is sufficiently mixed afterwards, and the mass ratio of coal ash is 1:1.30 after powdery clinker and drying.It is practical new that this is obtained after mixing
The flyash for concrete blend composition of type, is sent to finished bin 6 and is stored.
5, refined flyash is detected, testing result is shown in Table 1.
Table 1: the flyash examining report table for concrete blend composition
Claims (2)
1. the process units of the flyash for concrete blend composition, including sequentially connected coal-burning boiler (1), wheel disc loader
(2), spray column (3), drying device (4), mixing device (5), finished bin (6)；It further include Raymond mill (7), the Raymond mill (7)
It is connected with mixing device (5)；The spray column (3) is provided with flue (301)；The wheel disc loader (2) includes feed
The rotatable wheel disc (202) of chamber (201) and setting in feed chamber (201)；The wheel disc (202) includes vertical rotation
Axis (2021) and can with vertical rotation axis (2021) rotate disk body (2022), vertical rotation axis (2021) if on be vertically fixed
Dry partition (2023), partition (2023) one end are fixedly connected with vertical rotation axis (2021), and the other end extends to disk body (2022)
Edge, so that the inner space of feed chamber (201) is divided into several cache slots by disk body (2022) and partition (2023)；Institute
It states and is provided with coal ash import and coal ash outlet on feed chamber (201).
2. the process units of the flyash according to claim 1 for concrete blend composition, it is characterised in that: the wheel
The material of disk (202) is manganese.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821539928.7U CN209307235U (en) | 2018-09-20 | 2018-09-20 | The process units of flyash for concrete blend composition |
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| CN201821539928.7U CN209307235U (en) | 2018-09-20 | 2018-09-20 | The process units of flyash for concrete blend composition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109180038A (en) * | 2018-09-20 | 2019-01-11 | 吴兵 | The production method and device of flyash for concrete blend composition |
| CN111689710A (en) * | 2020-06-30 | 2020-09-22 | 吴兵 | Method for producing fly ash by utilizing stone cutting solid waste |
-
2018
- 2018-09-20 CN CN201821539928.7U patent/CN209307235U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109180038A (en) * | 2018-09-20 | 2019-01-11 | 吴兵 | The production method and device of flyash for concrete blend composition |
| CN109180038B (en) * | 2018-09-20 | 2021-08-13 | 吴兵 | Method and device for producing fly ash for concrete admixture |
| CN111689710A (en) * | 2020-06-30 | 2020-09-22 | 吴兵 | Method for producing fly ash by utilizing stone cutting solid waste |
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