CN114195417A - Fly ash solidified light aggregate production process and production device thereof - Google Patents
Fly ash solidified light aggregate production process and production device thereof Download PDFInfo
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- CN114195417A CN114195417A CN202111287515.0A CN202111287515A CN114195417A CN 114195417 A CN114195417 A CN 114195417A CN 202111287515 A CN202111287515 A CN 202111287515A CN 114195417 A CN114195417 A CN 114195417A
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- 239000006004 Quartz sand Substances 0.000 claims abstract description 6
- 239000002738 chelating agent Substances 0.000 claims abstract description 6
- 239000003365 glass fiber Substances 0.000 claims abstract description 5
- 239000010440 gypsum Substances 0.000 claims abstract description 5
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 5
- 239000000654 additive Substances 0.000 claims abstract description 4
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- 238000002156 mixing Methods 0.000 claims abstract description 3
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Images
Classifications
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/004—Devices for shaping artificial aggregates from ceramic mixtures or from mixtures containing hydraulic binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
- B28B11/0818—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads for roughening, profiling, corrugating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B15/00—General arrangement or layout of plant ; Industrial outlines or plant installations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/04—Exhausting or laying dust
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The application discloses flying ash solidification light aggregate production technology and apparatus, and flying ash solidification light aggregate production technology includes: s1, preparing a crushed aggregate: solidifying and crushing the fly ash; s2, preparing ingredients: mixing and stirring the crushed aggregate, the chelating agent, the cement, the semi-hydrated gypsum, the glass fiber, the quartz sand and the additive uniformly according to a proportion; s3, preparing spherulite aggregate: feeding the ingredients into a pelletizer to pelletize; s4, preparing multi-edge aggregate: extruding and shaping the spherical aggregate and napping the surface of the spherical aggregate by a napping machine to prepare multi-edge aggregate with a multi-edge and multi-edge shape; s5, preparing a lightweight aggregate: and maintaining the multi-edge aggregate to ensure that the maintenance strength is achieved after the multi-edge aggregate is maintained. The fly ash solidified lightweight aggregate generated by the application can be used as aggregate of the lightweight aggregate, and can be mixed with other lightweight aggregate aggregates, sandstone aggregates, cement, mineral powder, fly ash and the like to generate concrete products, so that seepage of heavy metals is greatly reduced, and pollution to the environment is avoided while resources are fully utilized.
Description
Technical Field
The invention relates to the field of fly ash solidification, in particular to a fly ash solidified light aggregate production process and a production device thereof.
Background
The fly ash generated after the garbage incineration contains various harmful heavy metal substances such as Cd, Pb, Zn, Cr and the like and salts which can be leached by water, and if the fly ash is directly buried or improperly treated, the heavy metal substances can enter the environment, pollute underground water and harm human beings. At present, the fly ash treatment mode at home and abroad mainly comprises stabilization and solidification landfill, for example, the fly ash is mixed with chelating agent and cement, is molded into solidified bricks by die casting, and is then buried for waste, or the fly ash is calcined and digested.
However, the direct landfill or the landfill after solidification not only affects the environment, but also cannot be recycled, and the treatment method of calcining and digesting the fly ash has large equipment investment and high energy consumption.
Therefore, how to recycle the fly ash and the treatment cost is low is urgently needed to be solved.
Disclosure of Invention
In order to solve the technical problems explained in the background art, the first objective of the present application is to provide a fly ash solidified lightweight aggregate production process, the fly ash solidified lightweight aggregate generated by the present application can be used as aggregate of lightweight aggregate, and can be mixed with other lightweight aggregate, sandstone aggregate, cement, mineral powder, fly ash and the like to generate concrete products; the method can carry out multiple times of containing and solidifying on the fly ash, can greatly reduce the seepage of heavy metals, and avoids the pollution to the environment while fully utilizing resources; the fly ash solidified lightweight aggregate generated by the method is of a multi-edge polygonal structure, and the surface of the fly ash solidified lightweight aggregate is napped, so that the particle surface area of the fly ash solidified lightweight aggregate can be increased, and the friction force between the fly ash solidified lightweight aggregate and other aggregates and concrete cementing materials can be increased, and on the other hand, the multi-edge polygonal fly ash solidified lightweight aggregate can be criss-cross in a concrete structure, so that the tight filling performance and the framework supporting performance between the lightweight aggregate aggregates, between the lightweight aggregate and other coarse and fine aggregates (sand aggregates) can be improved, the slippage can be reduced, the binding capacity between the fly ash solidified lightweight aggregate and other aggregates can be improved, and the strength of a concrete product can be improved.
The second purpose of the application is to provide a fly ash solidified light aggregate production device.
In order to achieve the first object, the present application proposes a fly ash solidified lightweight aggregate production process, which comprises the following steps:
s1, preparing a crushed aggregate: solidifying and crushing the fly ash;
s2, preparing ingredients: mixing and stirring the crushed aggregate, the chelating agent, the cement, the semi-hydrated gypsum, the glass fiber, the quartz sand and the additive uniformly according to a proportion;
s3, preparing spherulite aggregate: feeding the ingredients into a pelletizer to pelletize;
s4, preparing multi-edge aggregate: extruding and shaping the spherulite aggregate and napping the surface of the spherulite aggregate by a napping machine to prepare multi-edge aggregate with a multi-edge and multi-edge shape;
s5, preparing fly ash solidified lightweight aggregate: and maintaining the multi-edge aggregate to ensure that the maintenance strength is achieved after the multi-edge aggregate is maintained.
Preferably, the present application further comprises: dispersing, conditioning and aligning the pellet aggregates at least once before they enter the napping machine, with each pellet aggregate entering a separate multi-ribbed trough.
Preferably, the present application further comprises: and cleaning the residual aggregate adhered to the rotary belt of the napping machine.
Preferably, the present application further comprises: when the multi-edge aggregate is maintained, the multi-edge aggregate is placed in a movable maintenance bed, and the movable maintenance bed is provided with a wire mesh for placing the multi-edge aggregate.
Preferably, the present application further comprises: when the polygonal aggregate is maintained, the polygonal aggregate is conveyed into a maintenance kiln, after static maintenance is carried out for 0.5h, the temperature is increased to 60 ℃ at the temperature increasing speed of 30 ℃/h, the humidity is 90 percent, constant-temperature maintenance is carried out for 1h, and then the temperature is reduced to room temperature at the temperature decreasing speed of 30 ℃/h.
Preferably, the maintenance strength of the multi-edge aggregate is 3-5 MP, and the volume weight is 800-900 kg/m3。
Preferably, the particle size of the crushed aggregate in the step S1 is not more than 3 mm.
Preferably, the aggregate diameter of the pellets in the step S3 is 10-20 mm.
In order to achieve the second object, the present application proposes a fly ash solidified lightweight aggregate production apparatus, comprising: pelletizer, napper and removal maintenance bed, wherein:
the pelletizer is used for manufacturing the ingredients into spherulite aggregates, a material outlet belt is arranged at the discharge port of the pelletizer, a first rubber gate plate is arranged on the material outlet belt, and the first rubber gate plate disperses and arranges the spherulite aggregates; the napping machine comprises a first shaping belt and a second shaping belt which have opposite rotation directions, and the rotation directions of the first shaping belt and the discharge belt are the same; along the rotation direction, the first shaping belt and the second shaping belt are provided with multi-edge grooves which correspond to each other one by one to form a multi-edge cavity; the first shaping belt is provided with a second rubber gate plate which disperses, arranges and arranges the spherulitic aggregates so that each spherulitic aggregate enters into a single multi-edge groove; the movable maintenance bed comprises a silk screen and a transmission chain which are fixedly connected, and the transmission chain drives the silk screen to do rotary movement.
Preferably, the multi-prismatic groove has at least a first dimension and a second dimension, the first dimension being unequal to the second dimension, and/or the multi-prismatic groove has at least a first shape and a second shape, the first shape being different from the second shape.
The invention has the beneficial effects that:
1. the invention can carry out a plurality of times of containing and solidifying on the fly ash, the first time is to solidify the fly ash before preparing the crushed aggregate, the solidification of the fly ash can mean to solidify the fly ash into solidified bricks in a power plant, also can mean to solidify the fly ash into other forms, the second time is to mix and stir the crushed aggregate formed after solidifying the fly ash and other ingredients when preparing the ingredients, the third time is to solidify the fly ash and prepare the light aggregate, and then the light aggregate is mixed with other sandstone aggregates, cement, mineral powder, fly ash and the like to generate concrete products as the aggregate of the light aggregate, which can be widely used in the occasions of stable soil for roadbed water, foundation products of underground piles, pillar pipe piles of photovoltaic power generation, lawn bricks of ecological footpath bricks, prefabricated enclosing walls and the like, realizes the recycling of the fly ash, does not need to calcine, has low cost, can greatly reduce the seepage of heavy metal after carrying out a plurality of times of containing and solidifying on the fly ash, the resources are fully utilized, and meanwhile, the pollution to the environment is avoided;
2. preparing multi-edge aggregate, and performing extrusion plasticity and surface roughening on the spherical aggregate, so that on one hand, the particle surface area of the fly ash solidified lightweight aggregate can be increased, and the friction force between the fly ash solidified lightweight aggregate and other aggregates and concrete cementing materials is increased, on the other hand, the multi-edge fly ash solidified lightweight aggregate can be criss-cross arranged in a concrete structure, the tight filling performance and the framework supporting performance between the lightweight aggregate aggregates, between the lightweight aggregate and other coarse and fine aggregates (sandstone aggregates) are improved, the slippage is reduced, the binding capacity between the lightweight aggregate and other aggregates is improved, and the strength of a concrete product is improved;
3. when the multi-edge aggregate is maintained, the multi-edge aggregate is placed on the movable maintenance bed, the movable maintenance bed is provided with a wire mesh for placing the multi-edge aggregate, gaps among the wire mesh are beneficial to maintaining the back of the multi-edge aggregate, the atomization contact area of the multi-edge aggregate is increased, and the maintenance time is shortened;
4. in order to enable the spherical aggregate to enter the single multi-edge groove, in the production device, a first rubber gate plate is arranged at the discharging part of the pelletizer to disperse and arrange the spherical aggregate for the first time, and a second rubber gate plate is arranged on a first plastic belt of the napping machine to disperse, arrange and arrange the spherical aggregate for the second time.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a fly ash solidified lightweight aggregate production process in one embodiment of the present application;
FIG. 2 is a schematic diagram of an apparatus for producing fly ash solidified lightweight aggregate according to an embodiment of the present application;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is a schematic top view of a portion of a multi-faceted trough in an embodiment of the present application;
FIG. 5 is a schematic view of a mobile nursing bed according to an embodiment of the present application.
1. Pelletizing; 11. discharging the material belt; 12. a first rubber gate;
2. a napping machine; 21. a first shaping belt; 22. a second shaping belt; 23. a multi-edge groove; 24. a second rubber gate; 25. a steel plate; 26. cleaning a scraper;
3. moving the curing bed; 31. a wire mesh; 32. a drive chain; 33. a drum; 34. a connecting bolt;
4. aggregate of the spherulites;
5. a double-shaft mixer; 51. and (5) discharging the material pipe.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals indicate the same or structurally similar but functionally identical elements.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
With reference to fig. 1 to 5, in view of the deficiencies of the prior art, a first object of the present embodiment is to provide a process for producing fly ash solidified lightweight aggregate, which may include the following steps:
s1, preparing a crushed aggregate: the fly ash is solidified and then crushed, the solidification of the fly ash is first-time fly ash solidification and accommodation, in addition, the solidification of the fly ash can be used for solidifying the fly ash into solidified bricks in a power plant, and can also be used for solidifying the fly ash into other forms. In an exemplary embodiment, the crushed aggregate is machined sand having a particle size of no greater than 3 mm.
S2, preparing ingredients: the broken aggregate, the chelating agent, the cement, the semi-hydrated gypsum, the glass fiber, the quartz sand and the admixture are mixed and stirred uniformly according to the proportion, the broken aggregate formed after the fly ash is solidified is mixed and stirred with other ingredients, the second containing and solidification of the fly ash are completed, and the weight of the fly ash is enhanced while the second containing and solidification of the fly ash is carried out. In an exemplary embodiment, the grain size of the quartz sand may be 1.5mm or less.
S3, preparing spherulite aggregate 4: the ingredients are sent to a pelletizer 1 for pelletizing. In an exemplary embodiment, the pellet aggregate 4 ranges from 10 to 20mm in diameter.
S4, preparing multi-edge aggregate: the spherical aggregate 4 is extruded and shaped and surface napped by the napping machine 2 to prepare the multi-edge polygonal multi-edge aggregate, and the spherical aggregate 4 is extruded, molded and surface napped, so that on one hand, the particle surface area of the fly ash solidified light aggregate can be increased, and the friction force between the fly ash solidified light aggregate and other aggregates and concrete cementing materials can be increased, and on the other hand, the multi-edge polygonal fly ash solidified light aggregate can be criss-cross in a concrete structure, so that the tight filling performance and the framework supporting performance between the light aggregate aggregates, and between the light aggregate aggregates and other coarse and fine aggregates (sand aggregates) can be improved, the slippage is reduced, the binding capacity between the light aggregate aggregates and other aggregates is improved, and the strength of concrete products is improved.
S5, preparing fly ash solidified lightweight aggregate: and maintaining the multi-edge aggregate to ensure that the maintenance strength is achieved after the multi-edge aggregate is maintained. After the multi-edge aggregate reaches the curing strength, the fly ash solidified lightweight aggregate is formed, can be used as lightweight aggregate, and is combined with other lightweight aggregate aggregates and sandstone aggregates, wherein larger gaps among coarse aggregates can be filled with small aggregates, gaps among small aggregates are filled with fine aggregates, gaps among fine aggregates and other aggregates can be filled with powder materials such as cement, mineral powder and fly ash, water is added to carry out hydration reaction to wrap the surfaces of the aggregates, the aggregates are condensed and solidified into concrete products, the third containing and solidification of fly ash are completed, a large amount of industrial wastes such as fly ash and mineral powder can be consumed, and the utilization way of solid waste materials is widened.
The concrete product formed by the fly ash after being contained and cured for many times can be used for a lightweight aggregate concrete cushion layer of a footpath and a non-motor vehicle lane, and can also be used as concrete structures such as lightweight prefabricated wall panels, lightweight slope protection bricks, lightweight permeable bricks, lightweight road noise reduction barriers, high-speed rail noise reduction barriers, underground pile foundation products, underground pipe culverts, prefabricated pipe galleries, prefabricated cable ducts and the like.
Therefore, the method realizes the cyclic utilization of the fly ash, does not need calcination, has low cost, can carry out multiple times of containing and solidifying on the fly ash by adopting the process of the embodiment, greatly reduces the seepage of heavy metals in the fly ash, and avoids the pollution to the environment while fully utilizing resources. In addition, the fly ash solidified lightweight aggregate manufactured in the embodiment does not need to be calcined, the manufacturing method is simple, large-scale equipment is not needed for sintering, the energy consumption is reduced, and the environment-friendly effects of energy conservation and low carbon are achieved.
To ensure that each pellet aggregate 4 enters a separate polygonal slot 23, in an exemplary embodiment, the present application further comprises: the aggregate pellets 4 are dispersed, conditioned and arranged at least once before the aggregate pellets 4 enter the napper 2.
To prevent the polygon slot 23 from being blocked, in an exemplary embodiment, the present application further includes: the residual aggregate adhered to the rotary belt of the napper 2 is cleaned, for example, with a brush.
In order to improve the curing effect and shorten the curing time, in an exemplary embodiment, the present application further includes: when curing multi-edge aggregate, the multi-edge aggregate is placed in the movable curing bed 3, the movable curing bed 3 is provided with the silk screen 31 for placing the multi-edge aggregate, the space between the silk screens 31 can increase the atomization area of the multi-edge aggregate, and the curing time is shortened.
In order to achieve the curing strength of the multi-ribbed aggregate rapidly and effectively, in an exemplary embodiment, the present application further includes: when the multi-edge aggregate is maintained, the multi-edge aggregate is sent into a maintenance kiln, after static maintenance is carried out for 0.5h, the temperature is increased to 60 ℃ at the temperature rising speed of 30 ℃/h, the humidity is 90 percent, constant-temperature maintenance is carried out for 1h, and then the temperature is reduced to the room temperature at the temperature reducing speed of 30 ℃/h. Through meticulous maintenance in the curing kiln, different temperature control, humidity control have in different maintenance stages, have improved maintenance efficiency, after sufficient maintenance time, form the fly ash solidification light aggregate that maintenance intensity is up to standard, improve the concrete product that uses fly ash solidification light aggregate to make.
In order to ensure the strength of the concrete product produced by using the product of the embodiment, in the exemplary embodiment, the curing strength of the multi-edge aggregate is 3-5 MP, and the volume weight is 800-900 kg/m3. It should be understood by those skilled in the art that in other exemplary embodiments, the standard of curing strength can be adjusted according to the product requirements, and the specific values are only for illustration and are not intended to limit the application.
Referring to fig. 2 to 5, a second object of the present embodiment is to provide a fly ash solidified lightweight aggregate production apparatus, which includes: pelletizer 1, napper 2 and removal maintenance bed 3, wherein:
the pelletizer 1 is used for manufacturing ingredients into spherulite aggregates 4, a discharge belt 11 is arranged at the discharge port of the pelletizer 1, the discharge belt 11 is provided with a first rubber gate 12, and the first rubber gate 12 disperses and arranges the spherulite aggregates 4; the napping machine 2 comprises a first shaping belt 21 and a second shaping belt 22 which have opposite rotation directions, and the rotation directions of the first shaping belt 21 and the discharge belt 11 are the same; along the rotation direction, the first shaping belt 21 and the second shaping belt 22 are provided with multi-edge grooves 23 which correspond to each other one by one to form a multi-edge cavity; the first shaping belt 21 is provided with a second rubber gate 24, and the second rubber gate 24 disperses, arranges and arranges the pellet aggregates 4 so that each pellet aggregate 4 enters into a single multi-ribbed groove 23; the movable nursing bed 3 comprises a silk screen 31 and a transmission chain 32 which are fixedly connected, and the transmission chain 32 drives the silk screen 31 to do rotary movement.
In an exemplary embodiment, the fly ash is solidified into fly ash solidified bricks and then crushed into crushed aggregates with the particle size not larger than 3mm, chelating agent, cement, semi-hydrated gypsum, glass fiber, quartz sand and additive are added into the crushed aggregates, the materials are proportioned according to production requirements and then fed into a double-shaft mixer 5 to be uniformly mixed, then the uniformly mixed materials are fed into a pelletizer 1 through a feeding pipe 51 to be pelletized to prepare spherulite aggregates 4 with the diameter range of 10-20 mm, the spherulite aggregates 4 are primarily dispersed and arranged through a first rubber gate 12 at a discharging belt 11 at the discharging part of the pelletizer 1 to be flatly spread on a discharging belt 11, the spherulite aggregates 4 are fed into a napping machine 2 through the discharging belt 11, and when the spherulite aggregates 4 enter a first shaping belt 21 of the napping machine 2, the spherulite aggregates 4 are again forcedly dispersed through a second rubber gate 24 at the first shaping belt 21, Arranging and arranging, so that each pellet aggregate 4 enters an individual multi-edge groove 23 and continues to enter the napping machine 2, the pellets become irregular multi-edge aggregates under the extrusion and propelling of the first shaping belt 21 and the second shaping belt 22, and napping is finished on the surface. Subsequently, send into many arriss aggregate into on the removal maintenance bed 3, remove maintenance bed 3 including stainless steel net 31 and the drive chain 32 that encircles from top to bottom, silk screen 31 and chain fixed connection, revolve together, the space of silk screen 31 is favorable to gathering materials the back to many arriss and maintaining, increase atomizing area of contact, shorten the maintenance time, it removes to the maintenance kiln in to remove maintenance bed 3, further heat the humidification maintenance to many arriss aggregate, can install electric heating pipe in the maintenance kiln, atomizer, adopt the automatic control maintenance, automatic maintenance can keep the required temperature in the maintenance kiln, humidity and maintenance time, guarantee that many arriss aggregate can reach maintenance intensity standard. After the curing of the curing kiln is finished, the multi-edge aggregate can be intensively conveyed into the piling shed for storage and natural curing is continuously carried out, the multi-edge aggregate can be used as light aggregate after the curing strength is achieved, and the multi-edge aggregate can be matched with other light aggregate aggregates and sandstone aggregates to generate concrete products with various strengths and requirements.
In an exemplary embodiment, the first shaping belt 21 and the second shaping belt 22 may be wound with a steel plate 25, and the steel plate 25 is processed, for example, pressed, to form the multi-edge groove 23, and in order to complete the roughening, the groove wall of the multi-edge groove 23 may be uneven.
In an exemplary embodiment, at the discharge port of the napping machine 2, the first shaping belt 21 and the second shaping belt 22 may be provided with a cleaning scraper 26, and the cleaning scraper 26 may be made of rubber, and cleans a part of residual aggregate adhered to the first shaping belt 21 and the second shaping belt 22.
In an exemplary embodiment, the moving bed 3 includes a roller 33, a driving chain 32 is disposed on the roller 33, the driving chain 32 is a double-row chain, and a connecting bolt 34 is disposed between the screen 31 and the driving chain 32.
Referring to fig. 4, in an exemplary embodiment, the multi-ribbed groove 23 has at least a first dimension and a second dimension, the first dimension being unequal to the second dimension; the multi-ribbed slot 23 has at least a first shape and a second shape, the first shape being different from the second shape. Thus, the multi-ribbed slot 23 has at least two different combinations of sizes and shapes. The multi-edge grooves 23 have three-dimensional shapes with different shapes and sizes, and a plurality of multi-edge cavities are formed by vertically corresponding groove pits to manufacture multi-edge aggregates with different shapes and sizes, so that organization arrangement and gap filling during concrete production are facilitated, the flowability of the multi-edge aggregates in concrete is improved, the use of cementing materials is reduced by means of friction force brought by the multi-edge aggregates, and the strength of a concrete structure is enhanced.
It should be understood by those skilled in the art that the values and value ranges in all the above examples are only illustrative examples for easy understanding, and the protection scope in the present embodiment is not limited to the values and value ranges in all the above examples.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above are merely examples of the present invention, and are not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A fly ash solidified light aggregate production process is characterized in that,
s1, preparing a crushed aggregate: solidifying and crushing the fly ash;
s2, preparing ingredients: mixing and stirring the crushed aggregate, the chelating agent, the cement, the semi-hydrated gypsum, the glass fiber, the quartz sand and the additive uniformly according to a proportion;
s3, preparing spherulite aggregate: feeding the ingredients into a pelletizer to pelletize;
s4, preparing multi-edge aggregate: extruding and shaping the spherulite aggregate and napping the surface of the spherulite aggregate by a napping machine to prepare multi-edge aggregate with a multi-edge and multi-edge shape;
s5, preparing fly ash solidified lightweight aggregate: and maintaining the multi-edge aggregate to ensure that the maintenance strength is achieved after the multi-edge aggregate is maintained.
2. A fly ash solidified lightweight aggregate production process according to claim 1, further comprising:
dispersing, conditioning and aligning the pellet aggregates at least once before they enter the napping machine, with each pellet aggregate entering a separate multi-ribbed trough.
3. A fly ash solidified lightweight aggregate production process according to claim 1, further comprising:
and cleaning the residual aggregate adhered to the rotary belt of the napping machine.
4. A fly ash solidified lightweight aggregate production process according to claim 1, wherein when maintaining the multi-edge aggregate, the multi-edge aggregate is placed on a mobile maintenance bed, and the mobile maintenance bed is provided with a wire mesh for placing the multi-edge aggregate.
5. The process for producing fly ash solidified lightweight aggregate according to claim 1, wherein when the polygonal aggregate is maintained, the polygonal aggregate is sent to a maintenance kiln, after static maintenance is carried out for 0.5h, the temperature is raised to 60 ℃ at a temperature rise rate of 30 ℃/h, the humidity is 90%, constant-temperature maintenance is carried out for 1h, and then the temperature is reduced to room temperature at a temperature reduction rate of 30 ℃/h.
6. The process for producing fly ash solidified lightweight aggregate according to claim 1, wherein the maintenance strength of the polygonal aggregate is 3-5 MP, and the volume weight is 800-900 kg/m3。
7. A fly ash solidified lightweight aggregate production process as claimed in claim 1, wherein the particle size of the crushed aggregate in said step S1 is not more than 3 mm.
8. The process according to claim 1, wherein the diameter of the spherical aggregate in step S3 is 10-20 mm.
9. A fly ash solidified lightweight aggregate production device manufactured by the fly ash solidified lightweight aggregate production process according to any one of claims 1 to 8, the production device comprising:
the pelletizer is used for manufacturing the ingredients into spherulite aggregates, a material outlet belt is arranged at a discharge port of the pelletizer, a first rubber gate plate is arranged on the material outlet belt, and the first rubber gate plate disperses and arranges the spherulite aggregates;
the napping machine comprises a first shaping belt and a second shaping belt which have opposite rotation directions, and the rotation directions of the first shaping belt and the discharge belt are the same; along the rotation direction, the first shaping belt and the second shaping belt are provided with multi-edge grooves which correspond to each other one by one to form a multi-edge cavity; the first shaping belt is provided with a second rubber gate plate which disperses, arranges and arranges the spherulitic aggregates so that each spherulitic aggregate enters into a single multi-edge groove;
the movable maintenance bed comprises a silk screen and a transmission chain, wherein the silk screen and the transmission chain are fixedly connected, and the transmission chain drives the silk screen to rotate and move.
10. The fly ash solidified lightweight aggregate production device of claim 9, wherein the multi-prismatic groove has at least a first size and a second size, the first size being unequal to the second size, and/or the multi-prismatic groove has at least a first shape and a second shape, the first shape being different from the second shape.
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