CN116606096A - Production process of aerated building block by hot splashing steel slag - Google Patents
Production process of aerated building block by hot splashing steel slag Download PDFInfo
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- CN116606096A CN116606096A CN202310693861.1A CN202310693861A CN116606096A CN 116606096 A CN116606096 A CN 116606096A CN 202310693861 A CN202310693861 A CN 202310693861A CN 116606096 A CN116606096 A CN 116606096A
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- steel slag
- aerated
- crusher
- stirring
- crushing
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- 239000002893 slag Substances 0.000 title claims abstract description 124
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 119
- 239000010959 steel Substances 0.000 title claims abstract description 119
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000002699 waste material Substances 0.000 claims abstract description 39
- 238000003756 stirring Methods 0.000 claims abstract description 38
- 239000002245 particle Substances 0.000 claims abstract description 28
- 239000004568 cement Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010881 fly ash Substances 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 239000000654 additive Substances 0.000 claims abstract description 6
- 230000000996 additive effect Effects 0.000 claims abstract description 6
- 239000004567 concrete Substances 0.000 claims abstract description 6
- 239000004576 sand Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000010025 steaming Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 3
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 2
- 239000000788 chromium alloy Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims 1
- 239000004566 building material Substances 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 238000010348 incorporation Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000012257 stirred material Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
Classifications
-
- 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
-
- 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
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/142—Steelmaking slags, converter slags
-
- 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
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
-
- 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
Abstract
The application relates to the technical field of environment-friendly building materials, and in particular discloses a production process of steel slag by a hot splashing method for aerated building blocks, which comprises the following steps: s1: preparing steel slag, cement, sand, fly ash and aerated block waste, and then selecting hole particles contained in the steel slag as fine aggregate in a sorting mode, wherein solid steel slag with heavier mass and larger particles is crushed; s2: conveying the steel slag and the aerated block waste into a stirrer through conveying equipment for stirring; s3: uniformly stirring the steel slag and the aerated block waste, adding an additive, stirring for 30-50 min, adding cement and water, stirring, and sending the mixture into forming equipment for pouring and forming after the stirring is completed; s4: and feeding the formed aerated block into steam curing equipment for steam curing to obtain the concrete aerated block. The utilization of a large amount of industrial steel slag and aerated block waste materials ensures that the strength of the aerated block reaches the standard in the process of producing the aerated block.
Description
Technical Field
The application relates to the technical field of environment-friendly building materials, in particular to a production process of a hot-splashing steel slag for an aerated building block.
Background
In the steel smelting process, a large amount of solid waste steel slag is generated, and if a large amount of steel slag cannot be effectively treated, a large amount of steel slag is piled up and stored to occupy a large amount of land and aggravate environmental pollution.
The mineral components of tricalcium silicate and dicalcium silicate in the steel slag are similar to those of silicate cement clinker, so that the steel slag is partially used for replacing cement and applied to cement gel materials and concrete blocks, the cost is further reduced, and the current situation that the steel slag pollutes the environment is relieved.
Uniformly stirring materials such as steel slag, fly ash, lime, cement and the like, and forming a concrete aerated block through casting, steaming and pressing and other procedures. However, during the casting to the autoclaved process, a relatively large amount of aerated block waste is generated. The aerated block waste mainly comes from aerated blocks with damaged and unqualified performances, and in order to fully utilize the aerated block waste, the aerated block waste is crushed as a raw material and then added into a stirring process to be mixed with the stirred materials.
However, a plurality of problems exist in the production process of the aerated building block at present:
(1): when a large amount of air-entrained block waste is mixed into the air-entrained block, the air-entrained block cannot meet the requirements of the industry standard (strength is not less than 5 MPa) of the air-entrained block;
(2): when the strength of the aerated block cannot meet the requirement, only a large amount of water slag can be added, and a raw material structure of 27% of aerated block waste material, 53% of water slag and 20% of cement is finally formed, so that the consumption of the aerated block waste material is seriously insufficient;
(3): the preparation of the aerated block requires the addition of 20% cement, resulting in high raw material cost.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a hot-splashing steel slag for the production process of aerated building blocks, which solves the problem of utilizing a large amount of industrial steel slag and aerated block waste materials, and ensures that the strength of the aerated building blocks reaches the standard in the process of producing the aerated building blocks.
In order to solve the problems, the application adopts the following technical scheme:
a hot splashing steel slag is used for the production process of aerated building blocks, and comprises the following steps:
s1: preparing steel slag, cement, sand, fly ash and aerated block waste, crushing the steel slag, containing solid steel slag and porous steel slag, sorting out the surface porous steel slag as coarse aggregate, taking the aerated block waste and the fly ash as fine aggregate, and sorting out the steel slag containing porous particles in the steel slag as coarse aggregate in a sorting mode.
S2: the steel slag and the aerated block waste are conveyed into a stirrer through conveying equipment to be stirred.
S3: after uniformly stirring the steel slag and the aerated block waste, adding an additive, stirring for 30-50 min, adding cement, sand and water, stirring, and sending the mixture into forming equipment for pouring and forming after the stirring is completed.
S4: and feeding the formed aerated block into steam curing equipment for steam curing to obtain the concrete aerated block.
The principle of the scheme is as follows:
the method comprises the steps of crushing steel slag, selecting steel slag containing holes in the steel slag, taking the steel slag as coarse aggregate, combining low density of aerated block waste with excellent characteristics of high strength of the slag when the steel slag is taken as fine aggregate due to the fact that the selected steel slag particles have more holes, and embedding the aerated block waste with the steel slag to fully fill gaps among the steel slag particles, wherein the density and the strength of the aerated block reach the requirements.
The beneficial effect that this scheme produced is:
1. in the scheme of the application, the steel slag particles containing holes are closely embedded with the particles of the aerated block waste material by sorting the steel slag particles, and the aerated block waste material, the steel slag and the particles are mutually filled, so that the strength of the whole aerated block is improved.
2. A large amount of solid waste, steel slag, generated in the steel industry is consumed.
Further, in the step S1, the grain diameter of the crushed steel slag is 10-15 mm, the grain diameter of the aerated block waste is 3-8 mm, and the grain diameter of the aerated block waste is controlled to be smaller than the grain diameter of the steel slag, so that the steel slag and the aerated block waste can be embedded more tightly, the density of the produced aerated block is reduced, and the strength meets the requirement.
Further, in the step S4, the aerated block is steamed for 2-4 hours in the steaming equipment at the temperature of 15-50 ℃, the steaming temperature and the steaming time are increased, and the strength of the aerated block can be improved. However, because the temperature is controlled by boiler steam, the temperature and the steam curing time are required to be controlled while the strength of the aerated block is ensured in terms of saving production cost, and the increase of energy consumption is avoided.
Further, in the step S1, the steel slag is in an irregular block shape, the steel slag with heavier mass and solid mass is put into a crusher which is horizontally arranged for crushing, and the steel slag is in an uneven block shape, and because the particle sizes of the steel slag are different, the steel slag with bigger particles and solid mass is separated for crushing treatment, so that the mutual embedding of the steel slag particles and the particles of air block waste is ensured to be compact.
Further, the breaker is the tube-shape that the level was placed, both ends are feed inlet and discharge gate respectively about the breaker, transversely be fixed with the drive shaft that is used for driving breaker pivoted in the one end of breaker, even fixed mounting has intensive lug at the inner wall of breaker simultaneously, leave the gap between lug and the lug, the inside of breaker is vertical to be fixed with the baffle, the baffle is cut apart broken chamber and discharge chamber with the breaker inside, be linked together between broken chamber and the discharge chamber, evenly placed the broken ball that can break the slag in the inside of broken chamber, the slag enters into inside the breaker from the feed inlet, because the gap between lug and the lug this moment, some small diameter granule can fall in the gap between lug, roll in broken intracavity this moment to the broken ball, utilize broken ball roll down in broken intracavity, break large granule's slag, and the less slag of particle diameter stays between lug and the lug, avoid broken ball to break the slag into the powder that particle diameter is less with the broken ball.
Further, the lug is the cylindric of top arc, and lug interval 13mm, and the gap between lug and the lug can let the particle diameter of slag keep below 13mm, and during the breakage of broken ball, the broken ball can only contact the slag above the lug.
Further, the crushing balls comprise steel balls with different diameters, the diameters of the crushing balls are between phi 15mm and phi 20mm, the crushing balls are made of high-chromium alloy, when the crushing balls with the same diameters are placed for crushing steel slag, the crushing balls are tangent to the crushing balls, so that gaps between the crushing balls and the crushing balls are larger, at the moment, the crushing balls with smaller diameters are added for filling the gaps between the crushing balls, and further, the steel slag can be uniformly crushed.
Further, transversely-arranged stirring plates are symmetrically arranged in the crushing cavity, one end of each stirring plate is fixedly connected with the inner wall of the crushing frame, the stirring plates also rotate along with the crusher when the crusher rotates, the crushing balls are lifted by the stirring plates, and when the stirring plates are in a nearly vertical state, the steel balls fall down along the inclined planes of the stirring plates, so that steel slag which is always located below the inside of the crusher is crushed.
Further, the two ends of the outer part of the crusher are respectively and rotatably connected with a bracket, a positioning ball is arranged at the contact part of the bracket and the outer part of the crusher, an annular groove for the positioning ball to be clamped in is formed in the surface of the shell of the crusher, a base capable of controlling the inclination angle of the crusher is fixedly welded below the bracket, the bracket supports the crusher, and when a driving shaft drives the crusher to rotate, the positioning ball can move along the annular groove, so that the bracket supports the crusher and does not prevent the crusher from rotating; after the steel slag is crushed, the base drives the crusher to incline along one side of the discharge hole, and the steel slag is discharged from the discharge inlet.
Drawings
FIG. 1 is a schematic diagram of the present application;
fig. 2 is a schematic cross-sectional view of a crusher according to the application.
Reference numerals in the drawings of the specification include:
the crusher comprises a crusher 1, a feed inlet 1-1, a discharge outlet 1-2, a lug 1-3, crushing balls 1-4, a driving shaft 1-5, a bracket 2, a positioning ball 2-1, an annular groove 2-2, a crushing cavity 3, an agitating plate 3-1, a partition plate 3-2, a discharge cavity 4, a base 5 and supporting legs 5-1.
Detailed Description
The following is a further detailed description of the embodiments:
taking fig. 1 as an example, a feed inlet 1-1 is arranged at the left side of the crusher 1 in the drawing, and an agitating plate 3-1 is transversely arranged in the crusher 1, taking this as a direction reference.
Embodiment one:
the production process of the aerated building block comprises the following steps:
s1: the method comprises the steps of preparing screened steel slag, cement, sand, fly ash and aerated block waste, sorting the steel slag, crushing the steel slag, then containing solid steel slag and porous steel slag, screening the steel slag with porous surfaces, screening the steel slag with heavy mass, larger particles and solid particles, and then putting the steel slag into a crusher 1 for crushing.
The steel slag screening method comprises the following steps:
simultaneously putting crushed steel slag into water in batches, and screening upper steel slag as coarse aggregate;
after the steel slag with the porous surface is put into water, bubbles are accumulated on the surface, so that the speed of the lower layer of the steel slag is reduced, and the porous steel slag is accumulated on the upper layer; the steel slag with porous surface has larger specific surface area, can be better combined with other admixtures, and has higher strength; second, the surface porous steel slag density is smaller.
The diameter of the steel slag is preferably 12mm, the diameter of the air-entrained waste particles is 3 mm-6 mm, and the specific results are shown in Table 1.
S2: the steel slag and the aerated block waste are conveyed into a stirrer for stirring through conveying equipment.
S3: after uniformly stirring the steel slag and the aerated block waste, adding an additive, stirring for 30-50 min, wherein the additive adopts building waterproof glue, adding cement and water, stirring, and after stirring, delivering the mixture into forming equipment for pouring and forming.
S4: and (3) feeding the formed aerated blocks into a steaming and curing device for steaming and curing to obtain the concrete aerated blocks, wherein the curing time is fixed at 4 hours, the curing temperature is 45 ℃, and the results are shown in tables 2 and 3.
According to the original formula, 24% of steel slag, 62% of aerated block waste, 13.8% of cement and 0.2% of additive are mixed, the mixture ratio of raw materials is fixed, and the particle sizes of aerated blocks and steel slag are changed for experimental analysis.
Table 1: intensity contrast of aerated blocks mixed with different particle sizes
| Sequence number | Particle size/mm of aerated block waste | Particle size/mm of steel slag | Density/kg/m 3 | strength/MPa |
| Experimental example 1 | 0-3 | 8 | 1780 | 5.4 |
| Experimental example 2 | 3-6 | 12 | 1540 | 5.7 |
| Experimental example 3 | 6-8 | 18 | 1850 | 7.3 |
As can be seen from the results in Table 1, the steel slag particles with the size of 12mm are preferably selected as the framework, and the air-entrained waste material with the size of 3mm to 6mm is selected to fully fill the gaps among the steel slag particles, so that the density is the lightest and the strength reaches the requirement.
The optimal particle size ratio obtained by comparison of experimental examples 1-3 is selected, the curing time is fixed based on the original formula, and the curing temperature is changed for experimental analysis.
Table 2: absolute dry strength comparison analysis at different curing temperatures
| Sequence number | Temperature/. Degree.C | Time/h | Absolute dry strength/MPa |
| Experimental example 4 | 40 | 4 | 4.8 |
| Experimental example 5 | 45 | 4 | 6 |
| Experimental example 6 | 50 | 4 | 7 |
| Experimental example 7 | 55 | 4 | 7.6 |
| Experimental example 8 | 60 | 4 | 8.3 |
As is clear from the data in Table 2, when the curing time is fixed at 4 hours, the absolute dry strength becomes larger as the curing kiln temperature increases, and the temperature is controlled by the boiler steam, so that the aim of strength of 5MPa or more is fully satisfied when the temperature reaches 45 ℃ in terms of saving production cost.
Based on the original formula, the curing temperature is fixed, and the curing time is changed to carry out analysis experiments.
Table 3: absolute dry strength comparison analysis at different curing times
| Sequence number | Temperature/. Degree.C | Time/h | Absolute dry strength/MPa |
| Experimental example 9 | 45 | 2 | 4.2 |
| Experimental example 10 | 45 | 3 | 5 |
| Experimental example 11 | 45 | 4 | 6 |
| Experimental example 12 | 45 | 5 | 6.3 |
As is clear from the data in Table 3, when the curing temperature was fixed at 45 ℃, the oven dry strength slightly changed with the increase of the curing temperature. Only 4 hours of curing time can the target with the strength more than or equal to 5MPa be met, the curing time reaches 5 hours, and the strength is not changed greatly. Thus, a curing time of 4 hours was employed.
The optimal particle size ratio obtained by comparison of experimental examples 1-3 is selected, the cement doping amount is fixed based on the original formula, and the doping amount of the aerated block waste and the steel slag is changed for experimental analysis.
Table 4: light brick performance comparison with fixed waste incorporation
As is clear from the data in Table 4, the cement amount was fixed in the test, and 20% of the cement amount was uniformly used. As can be seen from the data in table 2, the fixed cement incorporation decreased density and strength with increasing incorporation of aerated block waste.
Embodiment two: a second embodiment is shown in fig. 1 and fig. 2.
The second embodiment is different from the first embodiment in that the crusher 1 used for crushing steel slag in the step S1 is a cylindrical structure which is transversely arranged, the left side of the crusher 1 is provided with a feed inlet 1-1, the right side of the crusher 1 is provided with a discharge outlet 1-2, the middle part of the right side of the crusher 1 is transversely connected with a driving shaft 1-5 for driving the crusher 1 to rotate, the end part of the driving shaft 1-5 is connected with a motor, and the motor is not drawn in the drawing.
The left side and the right side of the crusher 1 are respectively provided with a bracket 2 for fixing the crusher 1, the bracket 2 is shown in the attached drawing 1, the bracket 2 is arranged above the crusher 1, a positioning ball 2-1 capable of freely rolling is arranged at the contact part of the bracket 2 and the shell of the crusher 1, meanwhile, the surface of the shell of the crusher 1 is provided with an annular groove 2-2 into which the positioning ball 2-1 is clamped, and the positioning ball 2-1 is clamped in the annular groove 2-2. The driving shaft 1-5 drives the crusher 1 to rotate, and meanwhile, the crusher 1 rotates and the positioning ball 2-1 moves along the annular groove 2-2 due to the existence of the limiting groove and the positioning ball 2-1, so that the bracket 2 can fix the crusher 1 in the rotating process, and the bracket 2 does not obstruct the motion state of the crusher 1 in the rotating process.
The lower part of the crusher 1 is provided with a transverse base 5, the bottom end of the support 2 is fixedly connected with the base 5 through threaded screws, four telescopic supporting legs 5-1 are arranged below the base 5, the inner parts of the supporting legs 5-1 are provided with lifting motors, the tops of the supporting legs 5-1 are hinged with the base 5, the bottoms of the right supporting legs 5-1 are fixed with the ground, the bottoms of the left supporting legs are hinged with the ground, the lifting height of the four supporting legs 5-1 is controlled, the tilting of the crusher 1 can be controlled, and crushed steel slag is discharged from a discharge hole 1-2 of the crusher 1.
The inside of the crusher 1 is cylindrical, dense lugs 1-3 are uniformly distributed on the inside of the crusher 1, the lugs 1-3 are cylindrical with circular arcs at the tops, and the bottom ends of the lugs 1-3 are fixedly welded with the inner wall of the crusher 1 into a whole. A 13mm gap is left between two adjacent bumps 1-3 and the bump 1-3. Because the grain size of the steel slag is optimally 12mm, the steel slag with the grain size of 12mm can fall between two adjacent convex blocks 1-3 in the crushing process, and the steel slag can be prevented from being crushed by the size during crushing, so that the grain size of the steel slag is less than 12mm.
The inside of the crusher 1 is vertically fixed with a baffle plate 3-2, the inside of the crusher 1 is transversely divided into two crushing cavities 3 and a discharging cavity 4 by the baffle plate 3-2 in sequence, the top end of the baffle plate 3-2 is fixedly connected with the inside of the crusher 1 by using a screw rod, a gap for discharging steel slag is reserved between the bottom end of the baffle plate 3-2 and the protruding block 1-3, meanwhile, transverse stirring plates 3-1 are symmetrically arranged in the crushing cavities 3, the stirring plates 3-1 are shown in the attached drawing 2, and one end of each stirring plate 3-1 is fixedly welded with the inside of the crusher 1.
The crushing balls 1-4 are uniformly placed in the crushing cavity 3, the diameter of each crushing ball 1-4 is provided with two specifications of phi 15mm and phi 20mm, the crushing balls 1-4 with two different diameters are tangential to each other, more gaps are reserved between the tangential crushing balls 1-4 when the steel slag is crushed, and at the moment, the gaps between the tangential crushing balls 1-4 are reduced by adding the crushing balls 1-4 with smaller diameters, so that the steel slag can be uniformly crushed.
The crusher 1 rotates under the drive of the drive shaft 1-5, at this time, the stirring plate 3-1 leaves rotate along with the crusher 1, the crushing balls 1-4 and the steel slag are always positioned at the bottom of the crushing cavity 3 due to the action of gravity, the stirring plate 3-1 lifts the crushing balls 1-4 in the rotating process, and when the stirring plate 3-1 moves to be close to a vertical state, the crushing balls 1-4 fall from the stirring plate 3-1 to smash the steel slag.
After the crushing is finished, the rotation of the crusher 1 is stopped, the connecting rod at the bottom of the bottom plate extends out, the whole crusher 1 is inclined to the right side, and the crushed steel slag in the crushing cavity 3 moves into the discharging cavity 4 from a gap between the convex blocks 1-3 and is discharged from the discharging port 1-2.
The steps of crushing steel slag using the crusher 1 of the second embodiment are as follows:
1. the steel slag enters the crusher 1 from the feed inlet 1-1, and the crusher 1 rotates under the rotation of the driving shaft 1-5;
2. in the rotating process of the crusher 1, the stirring plates 3-1 rotate together, and at the moment, the crushing balls 1-4 positioned in the crushing cavity 3 are continuously lifted by the stirring plates 3-1 to fall down so as to crush the steel slag;
3. after the crushing of the crusher 1 is finished, the rotation of the crusher 1 is stopped, the supporting legs 5-1 at the bottom of the base 5 are lifted to incline the crusher 1 to the right, and the crushed steel slag is discharged from the discharge hole 1-2.
The foregoing is merely exemplary embodiments of the present application, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (8)
1. A hot splashing steel slag is used for the production process of aerated building blocks, which is characterized in that: the method comprises the following steps:
s1: preparing steel slag, cement, sand, fly ash and aerated block waste, crushing the steel slag, containing solid steel slag and porous steel slag after crushing, sorting out the surface porous steel slag as coarse aggregate, taking the aerated block waste and the fly ash as fine aggregate, and sorting out the steel slag containing porous particles in the steel slag as coarse aggregate in a sorting mode;
s2: conveying the coarse aggregate and the aerated block waste into a stirrer through conveying equipment for stirring;
s3: uniformly stirring the steel slag and the aerated block waste, adding an additive, stirring for 30-50 min, adding cement, sand and water, stirring, and sending the mixture into forming equipment for pouring and forming after stirring;
s4: and feeding the formed aerated block into steam curing equipment for steam curing to obtain the concrete aerated block.
2. The hot-splashing steel slag production process for aerated building blocks according to claim 1, which is characterized in that: the grain diameter of the crushed steel slag in the step S1 is 10 mm-15 mm, and the grain diameter of the aerated block waste is 3 mm-8 mm.
3. The hot splashing steel slag production process for aerated building blocks according to claim 1 is characterized in that: and (2) steaming the aerated blocks in the step (S4) for 2-4 hours in a steaming device at the temperature of 15-50 ℃.
4. The hot-splashing steel slag production process for aerated building blocks according to claim 3, which is characterized in that: the crusher is in a cylinder shape which is horizontally placed, the left end and the right end of the crusher are respectively provided with a feed inlet and a discharge outlet, a driving shaft which is used for driving the crusher to rotate is transversely fixed at one end of the crusher, meanwhile, dense lugs are uniformly and fixedly arranged on the inner wall of the crusher, gaps are reserved between the lugs, a partition plate is vertically fixed in the crusher, the inside of the crusher is divided into a crushing cavity and a discharge cavity by the partition plate, the crushing cavity is communicated with the discharge cavity, and crushing balls which can crush steel slag are uniformly placed in the crushing cavity.
5. The hot splashing steel slag production process for aerated building blocks according to claim 4, which is characterized in that: the convex blocks are cylindrical with arc tops, and the distance between the convex blocks is 13mm.
6. The hot splashing steel slag production process for aerated building blocks according to claim 4, which is characterized in that: the crushing balls comprise steel balls with different diameters, the diameter of the crushing balls is between phi 15mm and phi 20mm, and the crushing balls are made of high-chromium alloy.
7. The hot splashing steel slag production process for aerated building blocks according to claim 4, which is characterized in that: and stirring plates which are transversely arranged are symmetrically arranged in the crushing cavity, and one end part of each stirring plate is fixedly connected with the inner wall of the crushing frame.
8. The hot splashing steel slag production process for aerated building blocks according to claim 4, which is characterized in that: the outer both ends of breaker rotate respectively and are connected with the support, and the support is equipped with the locating ball with the outside contact department of breaker, has offered the ring channel that supplies the locating ball card to go into simultaneously at the shell surface of breaker, and fixed welding has the base of steerable breaker inclination in the below of support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310693861.1A CN116606096A (en) | 2023-06-12 | 2023-06-12 | Production process of aerated building block by hot splashing steel slag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310693861.1A CN116606096A (en) | 2023-06-12 | 2023-06-12 | Production process of aerated building block by hot splashing steel slag |
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| CN202310693861.1A Pending CN116606096A (en) | 2023-06-12 | 2023-06-12 | Production process of aerated building block by hot splashing steel slag |
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| Country | Link |
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| CN (1) | CN116606096A (en) |
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