CN111559892A - Preparation method of steel slag cement stabilized macadam raw material based on different specifications - Google Patents
Preparation method of steel slag cement stabilized macadam raw material based on different specifications Download PDFInfo
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- CN111559892A CN111559892A CN202010504906.2A CN202010504906A CN111559892A CN 111559892 A CN111559892 A CN 111559892A CN 202010504906 A CN202010504906 A CN 202010504906A CN 111559892 A CN111559892 A CN 111559892A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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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
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/142—Steelmaking slags, converter slags
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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
- 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a preparation method of a steel slag cement stabilized macadam raw material based on different specifications. The preparation method of the steel slag cement stabilized macadam raw material based on different specifications comprises the following steps: s1, preparing cement, steel slag, limestone macadam, stone chips and underground water according to the proportioning scheme of the raw materials. The preparation method of the steel slag cement stabilized macadam raw material based on different specifications has the advantages that the steel slag specifications are strictly controlled, and the doping amount of the steel slag of each specification is controlled, so that the density of coarse aggregates or fine aggregates is increased, larger gaps of a cement stabilized macadam road base layer caused by content difference of the steel slag of different specifications are reduced, the stability of the mixed cement stabilized macadam is effectively improved, the support is provided for concrete paved above, the strength and the compression resistance effect of the support are effectively improved, a large amount of stone materials are consumed by replacing the steel slag, the mining amount of natural stones can be reduced, the consumption of non-renewable resources is reduced, energy is saved, and the environment is protected.
Description
Technical Field
The invention relates to the technical field of cement stabilized macadam, in particular to a preparation method of a steel slag cement stabilized macadam raw material based on different specifications.
Background
The cement stabilized macadam takes graded macadam as aggregate, a certain amount of cementing material and enough mortar volume are adopted to fill the gaps of the aggregate, the macadam is paved and compacted according to the embedding and extruding principle, the compaction degree is close to the compactness, the strength mainly depends on the embedding and extruding locking principle among the macadams, meanwhile, enough mortar volume is adopted to fill the gaps of the aggregate, the early strength is high, the strength is increased along with the age and is quickly formed into a plate body, therefore, the cement stabilized macadam has higher strength, better impermeability and frost resistance, the cement consumption of the cement stabilized macadam is generally 3% -6% of the mixture, the unconfined compressive strength of 7 days can reach 5.0Mpa, the cement stabilized macadam is higher than other roadbed materials, the cement stabilized macadam can not be muddy when meeting rain after being survived, and the surface is solid, thus being an ideal base material for high.
When the steel slag is mixed, the existing steel slag is mixed with steel slag with different sizes, the steel slag content of different specifications is not controlled in a targeted mode, the use amount of the steel slag is large, when the steel slag content larger than 10mm is too much, gaps at the joint of mixed coarse aggregate are large, and after cement is mixed, the road surface cannot be paved, so that cement stabilized macadam is loosened easily, and gaps appear.
Therefore, it is necessary to provide a method for preparing a stabilized macadam material based on steel slag cement with different specifications to solve the above technical problems.
Disclosure of Invention
The invention provides a preparation method of a steel slag cement stabilized macadam raw material based on different specifications, which solves the problem that the steel slag specification in the cement stabilized macadam is not strictly controlled.
In order to solve the technical problems, the preparation method of the steel slag cement stabilized macadam raw material based on different specifications comprises the following steps:
s1, preparing cement, steel slag, limestone macadam, stone chips and underground water according to the proportioning scheme of the raw materials;
s2, screening the steel slag in the S1 raw material, and storing the steel slag with different specifications in a classified manner for later use;
s3, mixing and stirring the steel slag screened by the S2 and limestone macadam in the raw materials to prepare coarse aggregate;
s4, mixing and stirring the steel slag screened by the S2 and stone chips in the raw materials to prepare fine aggregate;
s5, mixing the coarse aggregate prepared in the step S4, the fine aggregate and the cement, adding underground water, and mixing and stirring to obtain a mixture of cement stabilized macadam;
s6, carrying out extrusion forming on the mixture prepared in the S5 through paving equipment to form the cement stabilized macadam road cushion.
Preferably, the specification of the steel slag sieved in the step S2 is as follows: 0-5 mm, 5-10 mm, 10-22 mm, 22-32 mm.
Preferably, based on each ton of cement stabilized macadam, the mass ratio of the steel slag with different specifications is 30% of the steel slag with the mass ratio of 0-5 mm, 25% of the steel slag with the mass ratio of 5-10 mm, 27% of the steel slag with the mass ratio of 10-22 mm and 15% of the steel slag with the mass ratio of 22-32 mm.
Preferably, the type of the cement in the S1 is PC32.5 or PC42.5 meeting the engineering quality requirement.
Preferably, the coarse aggregate is based on the total volume of the coarse aggregate, the volume ratio of the steel slag is 85-95%, and the ratio of the limestone macadam is 5-15%.
Preferably, the particle size range of the limestone macadam is 2.52-15 mm, the particle size range of the macadam is less than or equal to 5.2mm, and the mud content of the macadam is controlled to be less than 2.5 wt%.
Preferably, the S5 is intermittently filled when underground water is added, and the using amount of the underground water accounts for 5-6% of each ton of cement stabilized macadam raw materials.
Preferably, the steel slag with different specifications needs to be screened by using a screening device, and the screening device comprises:
the top of the fixed bottom plate is fixedly connected with the bottom of the mounting bracket, the top of the mounting bracket is fixedly connected with the bottom of the top plate, and the top plate is provided with a sliding hole;
the hydraulic lifting rod is fixed at the top of the top plate, the output end of the hydraulic lifting rod is fixedly connected with a first linkage plate, the top of the first linkage plate is fixedly connected with a connecting ring, and a rotating ring is rotatably connected inside the connecting ring;
the first tubular screen is fixed on the inner side of the rotating ring, the right end of the first tubular screen is fixedly connected with a connecting pipe, and the left end of the first tubular screen is fixedly connected with a limiting lug;
the movable telescopic rod is fixed to the top of the top plate, the output end of the movable telescopic rod is fixedly connected with a movable sliding plate, the bottom of the movable sliding plate is fixedly connected with at least two movable sliding shafts, the bottom ends of the at least two movable sliding shafts are fixedly connected with a second linkage plate, a rotating motor is fixedly connected to the second linkage plate, the output end of the rotating motor is fixedly connected with a rotating belt pulley, and the surface of the rotating belt pulley is connected with a driven belt pulley through belt transmission;
a second tubular screen disposed below the second linkage plate;
the feeding hopper is fixed on one side of the mounting bracket, and the output end of the feeding hopper is positioned at the input end of the second tubular screen;
and the material conveying mechanism is fixed at the top of the fixed bottom plate.
Preferably, the bottom ends of the at least two movable sliding shafts pass through the sliding holes and extend to the lower part of the top plate, and the size of the limiting convex block is clamped with the inner surface of the connecting pipe.
Preferably, the inner side of the driven pulley is fixedly connected with the surface of the second tubular screen, and the surface structure of the second tubular screen is the same as that of the first tubular screen.
Compared with the related technology, the preparation method of the steel slag cement stabilized macadam raw material based on different specifications has the following beneficial effects:
the invention provides a preparation method of a steel slag cement stabilized macadam raw material based on different specifications, which is characterized in that the steel slag specifications are strictly controlled, and the doping amount of the steel slag of each specification is controlled, so that the density of coarse aggregates or fine aggregates is increased, larger gaps of a cement stabilized macadam road base layer caused by the content difference of the steel slag of different specifications are reduced, the stability of the mixed cement stabilized macadam is effectively improved, a support is provided for concrete laid above, the strength and the compression resistance effect of the support are effectively improved, a large amount of stone materials are replaced by the steel slag, the mining amount of natural stones can be reduced, the consumption of non-renewable resources is reduced, and the energy conservation and environmental protection are realized.
Drawings
FIG. 1 is a schematic structural diagram of a screening device in the preparation method of the steel slag cement stabilized macadam raw material based on different specifications, provided by the invention;
fig. 2 is an enlarged view of a portion a shown in fig. 1.
Reference numbers in the figures: 1. the device comprises a fixed bottom plate, 2, a mounting bracket, 3, a top plate, 31, a sliding hole, 4, a hydraulic lifting rod, 41, a first linkage plate, 42, a connecting ring, 43, a rotating ring, 5, a first tubular screen, 51, a connecting pipe, 52, a limiting bump, 6, a movable telescopic rod, 61, a movable sliding plate, 62, a movable sliding shaft, 63, a second linkage plate, 64, a rotating motor, 65, a rotating belt pulley, 66, a belt, 67, a driven belt pulley, 7, a second tubular screen, 8, a feeding hopper, 9 and a material conveying mechanism.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a screening device in a method for preparing a steel slag cement stabilized macadam material based on different specifications according to the present invention;
fig. 2 is an enlarged view of a portion a shown in fig. 1. A preparation method of a steel slag cement stabilized macadam raw material based on different specifications comprises the following steps:
s1, preparing cement, steel slag, limestone macadam, stone chips and underground water according to the proportioning scheme of the raw materials;
s2, screening the steel slag in the S1 raw material, and storing the steel slag with different specifications in a classified manner for later use;
s3, mixing and stirring the steel slag screened by the S2 and limestone macadam in the raw materials to prepare coarse aggregate;
s4, mixing and stirring the steel slag screened by the S2 and stone chips in the raw materials to prepare fine aggregate;
s5, mixing the coarse aggregate prepared in the step S4, the fine aggregate and the cement, adding underground water, and mixing and stirring to obtain a mixture of cement stabilized macadam;
s6, carrying out extrusion forming on the mixture prepared in the S5 through paving equipment to form the cement stabilized macadam road cushion.
The proportioning scheme of the raw materials is as follows:
30% of steel slag with the thickness of 0-5 mm/ton, 25% of steel slag with the thickness of 5-10 mm/ton, 27% of steel slag with the thickness of 10-22 mm/ton, 10% of steel slag with the thickness of 22-32 mm/ton, 5-6% of underground water/ton, 1% of cement/ton, 0-1% of limestone macadam/ton and 1% of macadam/ton.
Through carrying out strict the accuse to the specification of slag, the doping amount of every specification slag is controlled, thereby increase the intensive nature in coarse aggregate or the fine aggregate, reduce the slag and cause cement stabilization rubble road bed layer to appear great space because of the content difference of different specifications, the stability after effectual improvement cement stabilization rubble mixes, provide the support for the concrete of top laying, the intensity and the resistance to compression effect of effectual improvement support, replace a large amount of building stones through the slag and consume, not only can reduce the exploitation volume of natural stone material, reduce the consumption of non-renewable resources, energy-concerving and environment-protective.
The specification of the steel slag screened in the S2 is as follows: 0-5 mm, 5-10 mm, 10-22 mm, 22-32 mm.
Based on each ton of cement stabilized macadam, the mass ratio of the steel slag with different specifications is 30% of the steel slag with the mass ratio of 0-5 mm, 25% of the steel slag with the mass ratio of 5-10 mm, 27% of the steel slag with the mass ratio of 10-22 mm and 15% of the steel slag with the mass ratio of 22-32 mm.
The type of the cement in the S1 is PC32.5 or PC42.5 which meets the engineering quality requirement.
The coarse aggregate is based on the total volume of the coarse aggregate, the volume proportion of the steel slag is 85-95%, and the proportion of the limestone macadam is 5-15%.
The steel slag with different specifications in the coarse aggregate is as follows:
the dosage of 5-10 mm accounts for 25% of the total dosage of ton;
the usage amount of 10-22 mm accounts for 27% of the total usage tonnage;
the dosage of 22-32 mm accounts for 10% of the total dosage of ton;
wherein the total dosage ton is one ton of cement stabilized macadam.
The particle size range of the limestone macadam is 2.52-15 mm, the particle size range of the macadam is less than or equal to 5.2mm, and the mud content of the macadam is controlled to be less than 2.5 wt%.
The fine aggregate is made of 0-5 mm steel slag, the using amount of the steel slag accounts for 30 tons of the total using amount, and when the steel slag with the size of 0-5 mm is mixed with stone chips, the stone chips account for less than or equal to 10% of the volume of the fine aggregate.
And intermittently filling the S5 medium underground water, wherein the amount of the underground water accounts for 5-6% of each ton of cement stabilized macadam raw material.
Intermittent type nature mode of watering can the mixed sufficiency of effectual guarantee water source, avoids the water source to pour into back and concentrates on the partial position department of raw materials, causes the phenomenon of caking and influences the mixed quality of raw materials, and the homogeneity of moisture distribution when improving the raw materials and mixing.
The preparation method of the steel slag cement stabilized macadam raw material based on different specifications has the following working principle:
preparing cement, steel slag, limestone broken stones, stone chips and underground water according to a proportioning scheme of raw materials;
screening the steel slag in the raw materials, and storing the steel slag with different specifications in a classified manner for later use;
mixing and stirring the screened steel slag and limestone macadam in the raw materials to prepare coarse aggregate;
mixing and stirring the screened steel slag and the stone chips in the raw materials to prepare fine aggregate;
mixing the prepared coarse aggregate, the fine aggregate and the cement, adding underground water, mixing and stirring to obtain a mixture of cement stabilized macadam;
and carrying out extrusion forming on the prepared mixture through paving equipment to form the cement stabilized macadam road cushion.
Compared with the related technology, the preparation method of the steel slag cement stabilized macadam raw material based on different specifications has the following beneficial effects:
through carrying out strict the accuse to the specification of slag, the doping amount of every specification slag is controlled, thereby increase the intensive nature in coarse aggregate or the fine aggregate, reduce the slag and cause cement stabilization rubble road bed layer to appear great space because of the content difference of different specifications, the stability after effectual improvement cement stabilization rubble mixes, provide the support for the concrete of top laying, the intensity and the resistance to compression effect of effectual improvement support, replace a large amount of building stones through the slag and consume, not only can reduce the exploitation volume of natural stone material, reduce the consumption of non-renewable resources, energy-concerving and environment-protective.
Second embodiment:
referring to fig. 1 and 2, a second embodiment of the present application provides another method for preparing a steel slag cement stabilized macadam material based on different specifications based on a method for preparing a steel slag cement stabilized macadam material based on different specifications according to a first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
Specifically, the difference between the preparation methods of the steel slag cement stabilized macadam raw materials based on different specifications provided by the second embodiment of the present application lies in that, based on the preparation methods of the steel slag cement stabilized macadam raw materials based on different specifications, the steel slag of different specifications needs to be screened by using a screening device, and the screening device includes: the mounting structure comprises a fixed bottom plate 1, a mounting bracket 2 and a top plate 3, wherein the top of the fixed bottom plate 1 is fixedly connected with the bottom of the mounting bracket 2, the top of the mounting bracket 2 is fixedly connected with the bottom of the top plate 3, and the top plate 3 is provided with a sliding hole 31; the hydraulic lifting rod 4 is fixed at the top of the top plate 3, the output end of the hydraulic lifting rod 4 is fixedly connected with a first linkage plate 41, the top of the first linkage plate 41 is fixedly connected with a connecting ring 42, and a rotating ring 43 is rotatably connected inside the connecting ring 42; the first tubular screen 5 is fixed on the inner side of the rotating ring 43, the right end of the first tubular screen 5 is fixedly connected with a connecting pipe 51, and the left end of the first tubular screen 5 is fixedly connected with a limiting bump 52; the movable telescopic rod 6 is fixed on the top of the top plate 3, the output end of the movable telescopic rod 6 is fixedly connected with a movable sliding plate 61, the bottom of the movable sliding plate 61 is fixedly connected with at least two movable sliding shafts 62, the bottom ends of the at least two movable sliding shafts 62 are fixedly connected with a second linkage plate 63, the upper part of the second linkage plate 63 is fixedly connected with a rotating motor 64, the output end of the rotating motor 64 is fixedly connected with a rotating belt pulley 65, and the surface of the rotating belt pulley 65 is in transmission connection with a driven belt pulley 67 through a belt 66; a second tubular screen 7, the second tubular screen 7 being disposed below the second linkage plate 63; the feeding hopper 8 is fixed on one side of the mounting bracket 2, and the output end of the feeding hopper 8 is positioned at the input end of the second tubular screen 7; and the material conveying mechanism 9 is fixed at the top of the fixed bottom plate 1, and the material conveying mechanism 9 is fixed at the top of the fixed bottom plate 1.
Connecting pipe 51 on spacing lug 52 and the first tubular screen cloth 5 that corresponds on the second tubular screen cloth 7 through convenient removal regulation docks and spacing, make things convenient for butt joint and installation between two tubular screen cloths to use, and second tubular screen cloth 7 provides pivoted power through rotating motor 64, conveniently drive the rotation regulation of second tubular screen cloth 7, second tubular screen cloth 7 drives first tubular screen cloth 5 through spacing lug 52 and connecting pipe 51's connection structure in step and rotates when rotating, the convenience is screened the slag of different particle sizes.
The connection rotation structure between the second tubular screen 7 and the second linkage plate 63 is the same as that between the first tubular screen 5 and the first linkage plate 41.
The second tubular screen cloth 7 has the same connecting structure as the first tubular screen cloth 5 except for the transmission structure of the driven pulley 67, and the particle size of the first tubular screen cloth 5 is larger than that of the second tubular screen cloth 7.
The practical use quantity of the tubular screen can be set according to the use requirement so as to meet the requirements of different particle sizes.
Two tubulose screen cloth all incline to distribute for the tubulose screen cloth rotates the screening, both can prevent stifled, and the sufficiency of scattering when increasing the whereabouts of raw materials simultaneously improves the quality of screening.
The bottom ends of at least two movable sliding shafts 62 pass through the sliding hole 31 and extend to the lower part of the top plate 3, and the size of the limiting convex block 52 is clamped with the inner surface of the connecting pipe 51.
The inner side of the driven pulley 67 is fixedly connected with the surface of the second tubular screen 7, and the surface structure of the second tubular screen 7 is the same as that of the first tubular screen 5.
Connect outside power and control switch when rotating motor 64 and using, rotate the rotation regulation of motor 64 through control switch control, rotate synchronous drive rotation belt pulley 65 when motor 64 rotates and rotate, it rotates to rotate belt pulley 65 and drive driven pulley 67 through belt 66 in step and rotate, driven pulley 67 drives second tubulose screen cloth 7 in step and rotates, second tubulose screen cloth 7 drives first tubulose screen cloth 5 in step and rotates, hydraulic lifting rod 4 conveniently adjusts the height of first linkage board 41, thereby the height that drives first tubulose screen cloth 5 is adjusted.
Has the advantages that:
connecting pipe 51 on spacing lug 52 and the first tubular screen cloth 5 that corresponds on the second tubular screen cloth 7 through convenient removal regulation docks and spacing, make things convenient for butt joint and installation between two tubular screen cloths to use, and second tubular screen cloth 7 provides pivoted power through rotating motor 64, conveniently drive the rotation regulation of second tubular screen cloth 7, second tubular screen cloth 7 drives first tubular screen cloth 5 through spacing lug 52 and connecting pipe 51's connection structure in step and rotates when rotating, the convenience is screened the slag of different particle sizes.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A preparation method of a steel slag cement stabilized macadam raw material based on different specifications is characterized by comprising the following steps:
s1, preparing cement, steel slag, limestone macadam, stone chips and underground water according to the proportioning scheme of the raw materials;
s2, screening the steel slag in the S1 raw material, and storing the steel slag with different specifications in a classified manner for later use;
s3, mixing and stirring the steel slag screened by the S2 and limestone macadam in the raw materials to prepare coarse aggregate;
s4, mixing and stirring the steel slag screened by the S2 and stone chips in the raw materials to prepare fine aggregate;
s5, mixing the coarse aggregate prepared in the step S4, the fine aggregate and the cement, adding underground water, and mixing and stirring to obtain a mixture of cement stabilized macadam;
s6, carrying out extrusion forming on the mixture prepared in the S5 through paving equipment to form the cement stabilized macadam road cushion.
2. The method for preparing the steel slag cement stabilized macadam raw material based on different specifications as claimed in claim 1, wherein the steel slag screened in S2 has the specification: 0-5 mm, 5-10 mm, 10-22 mm, 22-32 mm.
3. The preparation method of the steel slag cement stabilized macadam raw material based on different specifications as claimed in claim 2, wherein the mass ratio of the steel slag with different specifications is 30% of steel slag with 0-5 mm, 25% of steel slag with 5-10 mm, 27% of steel slag with 10-22 mm and 15% of steel slag with 22-32 mm based on each ton of cement stabilized macadam.
4. The method for preparing the steel slag cement stabilized macadam raw material based on different specifications as claimed in claim 1, wherein the type of the cement in S1 is PC32.5 or PC42.5 which meets the engineering quality requirements.
5. The method for preparing the steel slag cement stabilized macadam raw material based on different specifications as claimed in claim 1, wherein the volume of the steel slag is 85-95% and the limestone macadam is 5-15% based on the total volume of the coarse aggregate.
6. The preparation method of the steel slag cement stabilized macadam raw material based on different specifications as claimed in claim 5, wherein the particle size range of the limestone macadam is 2.52-15 mm, the particle size range of the macadam is less than or equal to 5.2mm, and the mud content of the macadam is controlled to be less than 2.5 wt%.
7. The method for preparing the steel slag cement stabilized macadam raw material based on different specifications as claimed in claim 1, wherein the groundwater is intermittently poured in the step of S5, and the usage amount of groundwater is 5-6% of each ton of the cement stabilized macadam raw material.
8. The method for preparing the steel slag cement stabilized macadam raw material based on different specifications as claimed in claim 2, wherein the steel slag of different specifications needs to be screened by a screening device, and the screening device comprises:
the top of the fixed bottom plate is fixedly connected with the bottom of the mounting bracket, the top of the mounting bracket is fixedly connected with the bottom of the top plate, and the top plate is provided with a sliding hole;
the hydraulic lifting rod is fixed at the top of the top plate, the output end of the hydraulic lifting rod is fixedly connected with a first linkage plate, the top of the first linkage plate is fixedly connected with a connecting ring, and a rotating ring is rotatably connected inside the connecting ring;
the first tubular screen is fixed on the inner side of the rotating ring, the right end of the first tubular screen is fixedly connected with a connecting pipe, and the left end of the first tubular screen is fixedly connected with a limiting lug;
the movable telescopic rod is fixed to the top of the top plate, the output end of the movable telescopic rod is fixedly connected with a movable sliding plate, the bottom of the movable sliding plate is fixedly connected with at least two movable sliding shafts, the bottom ends of the at least two movable sliding shafts are fixedly connected with a second linkage plate, a rotating motor is fixedly connected to the second linkage plate, the output end of the rotating motor is fixedly connected with a rotating belt pulley, and the surface of the rotating belt pulley is connected with a driven belt pulley through belt transmission;
a second tubular screen disposed below the second linkage plate;
the feeding hopper is fixed on one side of the mounting bracket, and the output end of the feeding hopper is positioned at the input end of the second tubular screen;
and the material conveying mechanism is fixed at the top of the fixed bottom plate.
9. The method for preparing the steel slag cement stabilized macadam raw material based on different specifications as recited in claim 8, wherein the bottom ends of at least two movable sliding shafts pass through the sliding hole and extend to the lower part of the top plate, and the size of the limiting bump is clamped with the inner surface of the connecting pipe.
10. The method of claim 9, wherein the inner side of the driven pulley is fixedly connected to the surface of the second tubular screen, and the surface structure of the second tubular screen is the same as the surface structure of the first tubular screen.
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| CN112374836A (en) * | 2020-12-01 | 2021-02-19 | 中冶宝钢技术服务有限公司 | Cement stabilized macadam gel material and preparation method and application thereof |
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Application publication date: 20200821 |