CN112941252A - Molten steel slag pretreatment device - Google Patents
Molten steel slag pretreatment device Download PDFInfo
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- CN112941252A CN112941252A CN202110353861.8A CN202110353861A CN112941252A CN 112941252 A CN112941252 A CN 112941252A CN 202110353861 A CN202110353861 A CN 202110353861A CN 112941252 A CN112941252 A CN 112941252A
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- slag
- bed
- molten steel
- steel slag
- rake
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- 239000002893 slag Substances 0.000 title claims abstract description 400
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 120
- 239000010959 steel Substances 0.000 title claims abstract description 120
- 239000000428 dust Substances 0.000 claims abstract description 76
- 239000007921 spray Substances 0.000 claims abstract description 19
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- 239000000110 cooling liquid Substances 0.000 description 3
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- 239000003546 flue gas Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
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- 229910000851 Alloy steel Inorganic materials 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
- C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to a molten steel slag pretreatment device, and belongs to the technical field of steel slag treatment. The molten steel slag pretreatment device comprises a slag bed, a rake car and a dust removal car; the harrow car includes automobile body, harrow and first running gear, and first running gear and automobile body coupling, the harrow is connected on the automobile body and the harrow is located the sediment bed top, and the dust removal car includes dust excluding hood, spray thrower and second running gear, and second running gear is connected with the dust excluding hood, and the spray thrower is located in the dust excluding hood. When the slag ladle car pours the molten steel slag onto the slag bed, the dust removal car moves to the pouring position of the slag ladle car, the dust removal cover collects dust generated in the process that the slag ladle car pours the molten steel slag, when the rake car crushes the molten steel slag, the dust removal car moves to the position of the rake car, and the dust removal cover collects smoke and dust generated in the process that the rake car crushes the molten steel slag and the sprayer cools the molten steel slag. After the rake car divides the molten steel slag, the surface area of the molten steel slag can be increased, and the efficiency of processing the molten steel slag into small slag blocks is improved.
Description
Technical Field
The invention belongs to the technical field of steel slag treatment, and particularly relates to a molten steel slag pretreatment device.
Background
When the molten steel slag is recycled, the molten steel slag is dumped and paved on a slag bed through a slag tank car, then the molten steel slag is processed into lump slag with a certain grain diameter according with a certain requirement through a pretreatment device, then the molten steel slag is watered, hot smoldered and digested, and then the digested steel slag is crushed, screened, magnetically separated and the like.
At present, the pretreatment processes of the molten steel slag comprise water quenching, air quenching, mechanical crushing, hot splashing, hot stuffiness and the like, but the processes all have the problems of long period and low efficiency of treating the molten steel slag into slag blocks. Moreover, smoke dust is generated when the slag tanker pours the molten steel slag and processes the molten steel slag into lump slag, and the existing pretreatment device can only effectively remove dust in the process of processing the molten steel slag into the lump slag and can not effectively remove dust in two places where the slag tanker pours the molten steel slag and processes the molten steel slag into the lump slag.
Disclosure of Invention
In view of the above, the present invention is directed to overcome the defects of the prior art, and provides a pretreatment device for molten steel slag, so as to solve the technical problems of the prior art that the pretreatment device has poor dust removal effect and low treatment efficiency for molten steel slag.
The invention is realized by the following technical scheme:
a molten steel slag pretreatment device comprising:
the molten steel slag bed comprises a slag bed, wherein molten steel slag is loaded on the surface of the slag bed, and the slag bed has a length direction and a width direction;
the scraper comprises a scraper body, a scraper and a first traveling device, wherein the scraper is arranged above the slag bed along the width direction of the slag bed, and the first traveling device is connected with the scraper body and drives the scraper to move along the length direction of the slag bed; and the number of the first and second groups,
the dust removal vehicle comprises a dust removal cover, a sprayer and a second travelling device, the second travelling device is connected with the dust removal cover and is used for waiting for moving the dust removal cover along the length direction of the slag bed, and the sprayer is arranged in the dust removal cover; the two opposite ends of the dust hood are provided with an exit and an exit for avoiding the slag bed and the rake car.
Optionally, in order to better implement the present invention, the rake comprises a first beam and a plurality of tines connected to the first beam, the plurality of tines being spaced apart and directed towards the slag bed.
Optionally, in order to better implement the present invention, the rake teeth include first rake teeth and second rake teeth, a plurality of the first rake teeth are arranged at intervals along the length direction of the first beam to form at least one row of first rake tooth units, a plurality of the second rake teeth are arranged at intervals along the length direction of the first beam to form at least one row of second rake tooth units, the first rake tooth units and the second rake tooth units are arranged at intervals along the length direction of the slag bed alternately, and the first rake teeth are opposite to the gaps between two adjacent second rake teeth.
Optionally, in order to better implement the present invention, a projection of the first rake teeth on the slag bed has a first included angle with a length direction of the slag bed, a projection of the second rake teeth on the slag bed has a second included angle with the length direction of the slag bed, and 0 ° < the first included angle < 90 °, and 90 ° < the second included angle < 180 °.
Optionally, in order to better implement the invention, a first chute is arranged on the vehicle body, a bottom of the first chute is close to the slag bed, a top of the first chute is far away from the slag bed, the first beam is slidably mounted in the first chute, and the rake teeth are provided with a first inclined surface for avoiding large slag lumps towards the slag receiving port.
Optionally, in order to better implement the present invention, a side wall of the first sliding chute is a second inclined surface, and an inclination direction of the second inclined surface is opposite to an inclination direction of the first inclined surface.
Optionally, in order to better implement the invention, the rake car further comprises a slag pushing plate and a lifting device, one end of the lifting device is fixed on the car body, the other end of the lifting device is connected with the slag pushing plate to drive the slag pushing plate to be close to or far away from the slag bed, and one end of the slag bed in the length direction is provided with a slag receiving port.
Optionally, in order to better implement the invention, the slag pushing plate includes a second beam and a pushing plate connected to the second beam, the pushing plate faces the slag bed, two ends of the slag pushing plate in the width direction of the slag bed are provided with bending portions, the bending direction of the bending portions faces the slag receiving port along the length direction of the slag bed, the bending angle of the bending portions is less than 90 °, and the length of the pushing plate in the width direction of the slag bed is matched with the width of the slag bed.
Optionally, in order to better implement the invention, the first traveling device and the second traveling device have the same structure, and both include traveling wheels and traveling rails, the traveling wheels are matched with the traveling rails, the traveling rails are parallel to the length direction of the slag bed, the traveling wheels in the first traveling device are connected with the vehicle body, and the traveling wheels in the second traveling device are connected with the dust hood.
Optionally, in order to better implement the present invention, the sprayer includes a spray pipe and a plurality of spray heads connected to the spray pipe, the plurality of spray heads are arranged at intervals along the width direction of the slag bed, and the dust remover is arranged at the top of the dust removing cover.
As an alternative, for a better implementation of the invention.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a slag bed, a rake car and a dust removal car, wherein the rake car and the dust removal car can move along the length direction of the slag bed, and the dust removal car can be respectively/simultaneously covered outside the slag bed and the rake car through an inlet and an outlet arranged on a dust removal cover. When the slag car dumps the molten steel slag, the dust removal car can move to the dumping position of the slag car and synchronously move along with the dumping direction of the slag car, the molten steel slag dumped by the slag car is covered by the dust removal cover so as to reduce the pollution of dust generated when the slag car dumps the molten steel slag to the environment, after the slag car dumps, the rake car enters the dust removal cover of the dust removal car through the first walking device, the rake car and the dust removal car synchronously move, the rake of the rake car is opened in the process of dividing the molten steel slag, the sprayer is opened, the molten steel slag after being divided by the rake is simultaneously sprayed and cooled, the molten steel slag is rapidly cooled and crushed into small slag blocks meeting the particle size requirement, and the smoke and the dust generated in the cooling process of the sprayed molten steel slag and the crushing process of the rake are collected and treated by the dust removal cover, so that the smoke and the dust generated in the cooling process of the sprayed molten steel slag and the crushing process of the molten steel slag by the rake are reduced And (5) environmental pollution. Meanwhile, the separation of the molten steel slag by the rake car and the spraying and cooling of the separated molten steel slag by the sprayer are carried out simultaneously, so that the backflow of the separated molten steel slag can be avoided, and the separated molten steel slag can have a larger contact area with cooling liquid sprayed by the sprayer, thereby further improving the efficiency of treating small slag blocks of the molten steel slag.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural view of the rake car and slag bed of fig. 1;
fig. 3 is a top view of the rake truck of fig. 2;
fig. 4 is a schematic structural view of the rake in fig. 2;
fig. 5 is a schematic view of the rake teeth and the push plate of fig. 2;
FIG. 6 is a side view of FIG. 2;
FIG. 7 is a schematic view of the internal structure of FIG. 6;
fig. 8 is a partially enlarged view of fig. 7.
Reference numerals:
100-slag bed; 110-a slag receiving port; 120-slag bed surface;
200-raking vehicle; 210-a vehicle body; 2101-first runner; 2102-a second chute; 2103-a second bevel; 220-rake; 221-a first beam; 2211-baffle; 222-rake teeth; 2221-first tine; 2222-second tine; 2223-a first inclined surface; 223-a cushion pad; 230-a slag pushing plate; 231-a second beam; 232-push plate; 2321-bending part; 233-rib plate; 240-a lifting device; 241-a hydraulic system; 250-a first walking device; 2501-running rail; 2502-road wheels;
300-a dust removal vehicle; 310-dust removal hood; 320-a sprayer; 3201-spray head; 3202-spraying pipe; 330-second running gear.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
as shown in fig. 1 to 8, a molten steel slag pretreatment apparatus includes: a slag bed 100, a rake truck 200, and a de-dusting truck 300, wherein,
as shown in fig. 1, the slag bed 100 is used to carry molten steel slag, and the molten steel slag carried on the slag bed surface 120 is transported by a slag pot car and poured over the slag bed surface 120. The slag bed 100 has a longitudinal direction and a width direction perpendicular to the longitudinal direction, and one end of the slag bed 100 in the longitudinal direction is provided with a slag receiving port 110.
As shown in fig. 1 to 8, the rake car 200 includes a car body 210, a rake 220, and a first traveling device 250, wherein,
as shown in fig. 1, the car body 210 is a gantry structure, the middle part of the car body 210 is arranged above the slag bed 100, the two ends of the car body 210 are arranged at the two sides of the slag bed 100 in the length direction, the first traveling device 250 includes traveling wheels 2502 and traveling rails 2501, the two traveling rails 2501 are respectively arranged at the two sides of the slag bed 100 in the length direction of the slag bed 100, that is, one traveling rail 2501 is respectively arranged at the two sides of the slag bed 100, and the traveling rails 2501 are parallel to the length direction of the slag bed 100.
As shown in fig. 6 and 7, each of the traveling rails 2501 is provided with at least two traveling wheels 2502 engaged with the traveling rail 2501, and the traveling wheels 2502 of the first traveling device 250 are rotatably connected to lower ends of both ends of the vehicle body 210, thereby moving the vehicle body 210 along the traveling rails 2501. Of course, the vehicle body 210 may have an overhanging structure, and the two traveling rails 2501 of the first traveling device 250 are disposed on the same side in the longitudinal direction of the slag bed 100, and the overhanging direction of the vehicle body 210 extends in the width direction of the slag bed.
As shown in fig. 1 to 3, the rake 220 is disposed above the slag bed 100 along the width direction of the slag bed 100 and connected to the car body 210, and specifically, the rake 220 includes a first cross beam 221 and a plurality of rake teeth 222. Both ends of the first cross member 221 are connected to the vehicle body 210 such that a gap is provided between the slag bed 100 and a middle portion of the first cross member 221 above the slag bed 100. The rake teeth 222 are in a long strip-shaped structure, the rake teeth 222 are arranged in a gap between the first cross beam 221 and the slag bed 100, and one end of each rake tooth 222 is detachably connected with the first cross beam 221 through a bolt, so that the rake teeth 222 which are seriously worn can be independently replaced, and the replacement cost is reduced; the other ends of the rake teeth 222 face the slag bed 100 and are as close to the slag bed surface 120 as possible on the premise of not scratching the slag bed surface 120, and the plurality of rake teeth 222 are arranged at intervals along the width direction of the slag bed 100 so as to divide and crush the molten steel slag, and the number of the rake teeth 222 and the intervals between the plurality of rake teeth 222 are correspondingly arranged according to the width of the slag bed 100 and the particle size required to be achieved after the molten steel slag is crushed. Preferably, the length of the rabble teeth 222 is equal to the distance between the first beam 221 and the slag bed surface 120, and the rabble teeth 222 are perpendicular to the slag bed surface 120. The rake teeth 222 are driven by the first traveling device 250 to cut and separate the molten steel slag laid on the slag bed 100.
It should be noted that the rake teeth 222 may be detachably connected to the first cross beam 221 by a bolt, and may also be detachably connected to the first cross beam 221 by a snap structure or other locking structure, and of course, if necessary, the rake teeth 222 may also be directly welded and fixed to the first cross beam 221 by welding. The rabble teeth 222 are made of alloy steel having wear resistance.
As shown in fig. 1, the dust removing vehicle 300 includes a dust removing hood 310, a sprayer 320, a dust remover 330 and a second traveling device 330, wherein the sidewall of the dust removing hood 310 is provided with an entrance for avoiding the slag bed 100 and the rake vehicle 200, and the entrance penetrates through the sidewalls of two opposite sides of the dust removing hood 310 and is communicated with the inner cavity of the dust removing hood 310; the second traveling device 330 is connected to the dust hood 310 and is used for driving the dust hood 310 to move. In this embodiment, the second traveling device 330 has the same structure as the first traveling device 250, and also includes traveling wheels 2502 and traveling rails 2501, and the traveling rails 2501 of the two second traveling devices 330 are disposed on two sides of the slag bed 100 along the length direction of the slag bed 100, that is, one traveling rail 2501 of the second traveling device 330 is disposed on each of two sides of the slag bed 100. In addition, the distance between the second traveling device 330 and the slag bed 100 is greater than the distance between the first traveling device 250 and the slag bed 100, specifically, the distance between the traveling rail 2501 on one side of the slag bed 100 in the length direction is described as the distance between the traveling rail 2501 of the second traveling device 330 and the slag bed 100 is greater than the distance between the traveling rail 2501 of the first traveling device 250 and the slag bed 100, so that the rake truck 200 can enter the dust removing truck 300 during the movement. The traveling rail 2501 is parallel to the longitudinal direction of the slag bed 100. The traveling wheels 2502 of the second traveling device 330 are rotatably connected to the lower end of the dust excluding hood 310, so as to drive the dust excluding hood 310 to move along the traveling rails 2501 of the second traveling device 330, and the dust excluding hood 310 can move to any position on the slag bed 100 where dust is to be excluded. The sprayer 320 is arranged in the dust hood 310 and fixed with the dust hood 310, the sprayer 320 comprises a spray pipe 3202 and a plurality of spray heads 3201 which are arranged on the spray pipe 3202 and communicated with the spray pipe 3202, the spray pipe 3202 is connected with an external cooling water source, and cooling water sprayed by the spray heads 3201 can cool the molten steel slag. The top of the dust hood 310 is connected with an external dust removing device through a dust removing pipeline so as to collect and discharge the flue gas and dust inside the dust hood 310. The conduit here is a hose.
When the slag ladle car emptys and lays the melting slag to slag bed 100, dust removal car 300 can remove to the position of empting at slag ladle car place to follow slag ladle car along the direction synchronous motion of 100 length direction's of slag bed topples, cover the melting slag that slag ladle car emptys through dust excluding hood 310, collect the dust that produces when empting the melting slag, and in getting into outside dust collecting equipment through the pipeline, in order to reduce the pollution of the dust that produces when slag ladle car emptys the melting slag to the environment. After the slag ladle car is completely dumped, the rake car 200 enters the dust hood 310 of the dust removal car 300 through the first traveling device 250, and the rake car 200 and the dust removal car 300 move synchronously. Because the molten steel slag has fluidity, the sprayer 320 is turned on when the rake teeth 222 of the rake car 200 divide the molten steel slag, the spray heads 3201 spray the cooling liquid to immediately spray and cool the molten steel slag after the rake 222 divides, so that the divided molten steel slag is rapidly cooled and crushed into small slag blocks meeting the requirement of the particle size and does not flow any more. The spray head 3201 collects flue gas and dust generated in the cooling process of spraying molten steel slag and in the process of crushing the molten steel slag by the rake 222 through the dust hood 310, and enters external dust removal equipment through a pipeline, so that pollution of the flue gas and dust generated in the cooling process of spraying molten steel slag and in the process of crushing the molten steel slag by the rake 222 to the environment is reduced. Meanwhile, because the division of the molten steel slag by the rake truck 200 and the spraying of the sprayer 320 on the divided molten steel slag are performed simultaneously, the backflow of the divided molten steel slag can be avoided, and the divided molten steel slag and the cooling liquid sprayed by the sprayer 320 can have a larger contact area, so that the efficiency of treating small slag blocks of the molten steel slag is further improved.
After the molten steel slag is processed into small slag pieces, the small slag pieces on the slag bed 100 need to be transported to other equipment for further processing, in the prior art, the small slag pieces are mostly transported by a special forklift or a transport vehicle, and the transportation of the small slag pieces back and forth by the forklift or the transport vehicle takes a lot of time, during which the pretreatment device cannot process new molten steel slag. In contrast, in the present embodiment, the slag receiving port 100 is provided at one end in the longitudinal direction of the slag bed 100, one end of the slag receiving port 100 communicates with the slag bed surface 120, and the other end of the slag receiving port 100 communicates with other downstream equipment or with the ground, and the rake truck 200 is further provided with a slag pushing plate 230 for pushing small slag lumps on the slag bed 100 into the slag receiving port 120 and a lifting device 240 for driving the slag pushing plate 230 to move. One end of the lifting device 240 is fixed on the vehicle body 210, and the other end of the lifting device 240 is fixedly connected with the slag pushing plate 230, so as to drive the slag pushing plate 230 to move towards the direction close to the slag bed 100 or drive the slag pushing plate 230 to move towards the direction far away from the slag bed 100.
As shown in fig. 2 to 8, the slag pushing plate 230 is disposed above the slag bed 100 along the width direction of the slag bed 100, specifically, the slag pushing plate 230 includes a second beam 231 and a pushing plate 232, the second beam 231 is connected with the lifting device 240, the pushing plate 232 is a rectangular straight plate, one end of the pushing plate 232 is detachably connected to the second beam 231 through a bolt, so that the pushing plate 232 is replaced when the pushing plate 232 is seriously worn, the distance between the two ends of the pushing plate 232 along the width direction of the slag bed 100 is matched with the width of the slag bed 100, and the pushing plate 232 is opposite to the slag bed 100, so as to ensure that the crushed steel slag can be pushed into the slag receiving port 110 along the length direction of the slag bed 100.
As shown in fig. 7 and 8, a plurality of rib plates 233 are further provided on the push plate 232, the plurality of rib plates 233 are fixed to the push plate at intervals, and one end of each rib plate 233 is welded and fixed to the second cross beam 231, so that the rib plates 233 can reinforce the deformation resistance of the push plate 232. The rib plate 233 is arranged on the side of the push plate 232 opposite to the slag receiving opening 110.
As shown in fig. 5, in addition, furthermore, two ends of the push plate 232 along the width direction of the slag bed 100 are provided with bending portions 2321, the bending direction of the bending portions 2321 is bent along the length direction of the slag bed 100 and faces to one end of the slag bed 100 where the slag receiving port 110 is located, and the bending angle of the bending portions 2321 is smaller than 90 °, so that the push plate 232 forms a flaring structure, so that in the process of pushing the steel slag, the steel slag can be gathered at the middle of the push plate 232, and the defect that the steel slag leaks out from the edge of the push plate 232 is reduced.
It should be noted that, in addition to the detachable connection of the push plate 232 with the second cross beam 231 through the bolt, the push plate 232 may also be detachably connected with the second cross beam 231 through a snap structure or other locking structures, and of course, if necessary, the push plate 232 may also be directly welded and fixed on the second cross beam 231 through a welding manner. In addition, the pushing plate 232 may be a rectangular plate, a bent plate, an arc plate, or other structures, as long as the steel slag can be pushed into the slag receiving opening 110.
As shown in fig. 1 and 6, the lifting device 240 is a telescopic cylinder, the slag pushing plate 230 does not contact with the molten steel slag and the crushed steel slag, and when the lifting device 240 drives the slag pushing plate 230 to approach the slag bed 100, the slag pushing plate 230 can push the crushed steel slag. The lifting device 240 drives the slag pushing plate 230 to move towards the slag bed 100 or away from the slag bed 100, and in the embodiment, the lifting device 240 drives the slag pushing plate 230 to move along the direction perpendicular to the slag bed surface 120 to achieve the purpose of approaching the slag bed 100 or away from the slag bed 100. When the lifting device 240 drives the slag pushing plate 230 to rise to the highest height (the maximum distance between the slag pushing plate 230 and the slag bed surface 120), the maximum distance between the lower end of the pushing plate 232 and the slag bed surface 120 is greater than the highest height of the molten steel slag laid on the slag bed surface 120, so that the pushing plate 232 cannot contact with the molten steel slag, and the state is mainly used in the process of dividing the molten steel slag by the rake; when the lifting device 240 drives the slag pushing plate 230 to descend to the lowest height (i.e. the minimum distance between the slag pushing plate 230 and the slag bed surface 120), the lower end of the pushing plate 232 is attached to the slag bed surface 120, so that all small slag blocks on the slag bed are pushed into the slag receiving opening 110.
When the rake 220 is required to divide the molten steel slag, the slag pushing plate 230 of the rake car 200 is raised to the highest height. After the molten steel slag forms small slag blocks under the combined action of the rakes 220 and the sprayers 320, the slag pushing plate 230 descends under the driving of the lifting device 240, so that the crushed steel slag can be pushed into the slag receiving port 110 by the slag pushing plate 230 and then directly enters other subsequent processes or is conveyed to other processes by a carrying vehicle.
It should be noted that the lifting device 240 is preferably a multi-stage lifting device, that is, the telescopic oil cylinder is a multi-stage telescopic oil cylinder, so that when the broken small slag blocks need to be pushed, the slag pushing plate 230 can be close to the slag bed 100 step by step under the action of the lifting device 240, which not only can reduce the power required for pushing all the small slag blocks at one time, but also can avoid the defect that the height of the steel slag is higher than that of the second beam 231 due to continuous accumulation of the steel slag in the pushing process due to pushing all the steel slag at one time, and part of the small slag blocks fall on the slag bed 100 again beyond the top of the second beam 231, which results in poor slag pushing effect. When the lifting device 240 is a telescopic cylinder, a hydraulic system 241 for powering the telescopic cylinder is also fixed to the first traveling device 250. The lifting device 240 can be a multi-stage telescopic cylinder, and can also be a telescopic cylinder, a gear chain mechanism, or other devices capable of lifting the slag pushing plate 230.
When the lifting device 240 is a multi-stage lifting device, the lifting device 240 drives the slag pushing plate 230 to descend step by step in the descending process, namely the slag pushing plate 230 descends for a certain distance and stops descending, the rake truck 200 moves once towards the slag receiving port 110 to push a layer of small slag blocks into the slag receiving port 110, then the rake truck 200 returns to one end of the slag bed 100 away from the slag receiving port 110 in the length direction, the lifting device 240 drives the slag pushing plate 230 to descend for a certain distance again and stops descending, then the rake truck 200 moves once again towards the slag receiving port 110 to push a layer of small slag blocks into the slag receiving port 110; in this way, the slag pushing plate 230 descends step by step until the lower end surface of the slag pushing plate 230 is attached to the slag bed surface 120, and all the remaining small slag blocks are pushed into the slag receiving opening 110.
As shown in fig. 4 and 5, in the present embodiment, the rake teeth 222 include first rake teeth 2221 and second rake teeth 2222, the first rake teeth 2221 are arranged at intervals along the length direction of the first beam 221 to form at least one row of first rake teeth 2221 units, the second rake teeth 2222 are arranged at intervals along the length direction of the first beam 221 to form at least one row of second rake teeth 2222 units, the first rake teeth 2221 units and the second rake teeth 2222 units are alternately arranged at intervals along the length direction of the slag bed 100 to form a plurality of rows of rake teeth 222, and the first rake teeth 2221 are opposite to the gaps between two adjacent second rake teeth 2222. With this arrangement, after the molten steel slag is cut by the first rake teeth 2221, the molten steel slag enters the gaps between the adjacent first rake teeth 2221, and the second rake teeth 2222 are opposite to the gaps between the first rake teeth 2221, so that the molten steel slag cut by the first rake teeth 2221 can be cut again, and the cutting capability and the cutting effect of the rake teeth 222 on the molten steel slag are improved. In addition, the rake 220 is used to crush the molten steel slag, and the rake teeth 222 are always in contact with the molten steel slag during crushing of the molten steel slag, so that the molten steel slag is not easily adhered to the rake 220.
As shown in fig. 4 and 5, in addition, the projection of the first rake teeth 2221 on the slag bed 100 has a first included angle with the length direction of the slag bed 100, the projection of the second rake teeth 2222 on the slag bed 100 has a second included angle with the length direction of the slag bed 100, 0 ° < the first included angle < 90 °, 90 ° < the second included angle < 180 °, the molten steel slag cut by the first rake teeth 2221 is shoveled in the oblique direction of the first rake teeth 2221, while the molten steel slag cut by the second rake teeth 2222 is shoveled in the oblique direction of the second rake teeth 2222, and since the oblique direction of the first rake teeth 2221 is opposite to that of the second rake teeth 2222, the shoveling direction of the molten steel slag after being cut by the first rake teeth 2221 and the second rake teeth 2222 in turn is opposite, which can ensure that the molten steel slag will not be deflected to both side edges of the length direction of the slag bed 100, and at the same time, the first rake teeth 2221 and the second rake teeth 2222 can have certain effect on the molten steel slag, so that the molten steel slag can be cooled, cut and crushed into small steel slag blocks more quickly.
In addition, in the crushing process of molten steel slag, there may be large lumps of slag that have agglomerated without being crushed. Such a large slag lump cannot be directly crushed by the rake 220, and meanwhile, pushing the large slag lump directly into the slag receiving port 110 through the slag pushing plate 230 may cause the slag receiving port 110 to be blocked or cannot be digested in a subsequent digestion process. Additional treatment of the large slag lumps thus transported out of the slag bed 100 is required.
In this regard, as shown in fig. 6 and 7, in this embodiment, first chutes 2101 are respectively provided on upper end surfaces of both ends of the vehicle body 210, the first chutes 2101 are perpendicular to the slag bed surface 120, a groove bottom of the first chute 2101 is close to the slag bed 100, a groove bottom of the first chute 2101 is far from the slag bed 100, and both ends of the first beam 221 are respectively slidably connected to the two first chutes 2101, so that the first beam 221 and the rake teeth 222 can move up and down along the first chute 2101. In addition, a first inclined surface 2223 for avoiding a large slag lump is provided in the rake teeth 222 in a direction toward the slag receiving port 110, and the first inclined surface 2223 is formed by cutting off a corner of the rake teeth 222. When the rake 220 moves towards the slag receiving opening 110 to cut the molten steel slag, the first inclined surface 2223 will contact with the molten steel slag first, and the molten steel slag will provide an upward thrust to the rake teeth 222 through the first inclined surface 2223, but because of the weight of the first beam 221 and the rake teeth 222, when cutting the molten steel slag, the thrust provided by the molten steel slag is smaller than the self weight of the first beam 221 and the rake teeth 222, and therefore, the first beam 221 and the rake teeth 222 will not move along the first chute 2101 to the top of the first chute 2101 because of the first inclined surface 2223, so that the rake teeth 222 can cut the molten steel slag, and if necessary, a configuration block can be mounted on the first beam 221 to increase the overall weight of the first beam 221 and the rake teeth 222; when the rake teeth 222 encounter the agglomerated big slag lumps, the rake teeth 222 cannot cut the agglomerated big slag lumps apart, so that the thrust force provided by the large molten steel slag is greater than the self weight of the first beam 221 and the rake teeth 222, so that the rake teeth 222 can move towards the first chute 2101 by means of the thrust force generated between the first inclined surface 2223 and the large slag lumps, avoid large steel slag, prevent the large slag lumps from being pushed into the slag receiving opening 110, and when the rake truck 200 moves away from the slag receiving port 110, the other side of the rake teeth 222 contacts with the large slag lump, and the other side of the rake teeth 222 is not provided with the first inclined surface 2223, and the other side of the rake teeth 222 is perpendicular to the slag bed surface 120, so that there is no thrust capable of providing upward movement to the rake teeth 222, so that the rake teeth 222 can push the large slag lumps to the other end of the slag bed 100 away from the slag receiving port 110, and then the large slag lumps are specially processed by other processes and equipment. The distance between both ends of the first inclined surface 2223 in the height direction is greater than the maximum diameter of a large slag lump generated from the molten steel slag, so that the first inclined surface 2223 is adapted to the molten steel slag having different diameters.
As shown in fig. 6, a buffer 223 is further provided at the bottom of the first chute 2101, and the buffer 223 is made of rubber or hemp having elasticity. When the first cross beam 221 slides down to the bottom of the first sliding groove 2101, the cushion 223 can cushion the first cross beam 221 and prevent the first cross beam 221 from directly colliding with the bottom of the first sliding groove 2101. Further, baffle plates 2211 are provided at both ends of the first cross member 221 in the width direction of the slag bed 100, respectively. The baffle 2211 is detachably connected or welded with the end part of the first beam 221, and the baffle 2211 at the two ends of the first beam 221 jointly limits the first beam 221 to move along the width direction of the slag bed 100, so that the end part of the first beam 221 is prevented from falling off from the first chute 2101 in the ascending or descending process of the first beam 221.
As shown in fig. 6, further, a second inclined surface 2103 is provided on a side wall of the first chute 2101 for facilitating the rake teeth 222 to slide in an avoiding manner, an inclined direction of the second inclined surface 2103 is opposite to an inclined direction of the first inclined surface 2223, in this embodiment, the second inclined surface 2103 is a side surface of the first chute 2101 away from the slag receiving opening 110 in a length direction of the slag bed 100, and one side of the first beam 221 is also an inclined surface and is adapted to the second inclined surface 2103, so that when the rake teeth 222 avoid a large slag lump, the first beam 221 can ascend along the second inclined surface 2103, and a thrust required during ascending is smaller.
As shown in fig. 6 and 7, in addition, a second sliding chute 2102 can be selectively arranged on the vehicle body 210, the second sliding chute 2102 is disposed on the slag bed surface 120, two ends of the second cross beam 231 are respectively located in the two second sliding chutes 2102, and the second cross beam 231 can be closer to the slag bed 100 in the descending process by arranging the second sliding chute 2102, so that the distance between two ends of the push plate 232 in the vertical direction is reduced, and the situation that the push plate 232 deforms in the process of pushing the crushed steel slag due to the overlong push plate 232 is reduced. Further, a cushion 223 is provided on the groove bottom of the second sliding groove 2102 to prevent direct collision between the second beam 231 and the second sliding groove 2102.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A molten steel slag pretreatment device is characterized by comprising:
the molten steel slag bed comprises a slag bed, wherein molten steel slag is loaded on the surface of the slag bed, and the slag bed has a length direction and a width direction;
the scraper comprises a scraper body, a scraper and a first traveling device, wherein the scraper is arranged above the slag bed along the width direction of the slag bed, and the first traveling device is connected with the scraper body and drives the scraper to move along the length direction of the slag bed; and the number of the first and second groups,
the dust removal car, the dust removal car includes dust excluding hood, spray thrower and second running gear, second running gear with the dust excluding hood is connected and is driven the dust excluding hood is followed slag bed length direction removes, the spray thrower is located in the dust excluding hood, the both ends that the dust excluding hood is relative have been seted up dodge the slag bed with the rake car access & exit.
2. The apparatus of claim 1, wherein the rake comprises a first beam and a plurality of tines connected to the first beam, the plurality of tines being spaced apart and directed toward the slag bed.
3. The apparatus as claimed in claim 2, wherein the rabble teeth comprise first rabble teeth and second rabble teeth, a plurality of the first rabble teeth are arranged at intervals along the length direction of the first beam to form at least one row of first rabble tooth units, a plurality of the second rabble teeth are arranged at intervals along the length direction of the first beam to form at least one row of second rabble tooth units, the first rabble tooth units and the second rabble tooth units are arranged at intervals along the length direction of the slag bed alternately, and each first rabble tooth faces to the gap between two adjacent second rabble teeth.
4. A molten steel slag pretreatment apparatus according to claim 3, wherein the projection of said first rake teeth onto said slag bed has a first angle with the longitudinal direction of said slag bed, and the projection of said second rake teeth onto said slag bed has a second angle with the longitudinal direction of said slag bed, 0 ° < said first angle < 90 °, 90 ° < said second angle < 180 °.
5. The molten steel slag pretreatment device according to claim 2, wherein a first chute is arranged on the vehicle body, the bottom of the first chute is close to the slag bed, the top of the first chute is far away from the slag bed, the first beam is slidably mounted in the first chute, and the rake teeth are provided with a first inclined surface for avoiding large slag lumps towards the slag receiving port.
6. The apparatus of claim 5, wherein the first chute has a second inclined surface on a side wall thereof, and the second inclined surface is inclined in a direction opposite to that of the first inclined surface.
7. The pretreatment apparatus for molten steel slag according to any one of claims 1 to 6, wherein the harrow further comprises a slag pushing plate and a lifting device, one end of the lifting device is fixed on the vehicle body, the other end of the lifting device is connected with the slag pushing plate to drive the slag pushing plate to be close to or away from the slag bed, and one end of the slag bed in the length direction is provided with a slag receiving port.
8. The molten steel slag pretreatment device according to claim 7, wherein the slag pushing plate comprises a second beam and a pushing plate connected with the second beam, the pushing plate faces the slag bed, bending portions are arranged at two ends of the slag pushing plate in the width direction of the slag bed, the bending direction of the bending portions faces the slag receiving port along the length direction of the slag bed, and the bending angle of the bending portions is smaller than 90 degrees, and the length of the pushing plate in the width direction of the slag bed is matched with the width of the slag bed.
9. The molten steel slag pretreatment device according to claim 7, wherein the first traveling device and the second traveling device have the same structure and each comprise a traveling wheel and a traveling rail, the traveling wheels are matched with the traveling rails, the traveling rails are parallel to the length direction of the slag bed, the traveling wheels of the first traveling device are connected with the vehicle body, and the traveling wheels of the second traveling device are connected with the dust hood.
10. The apparatus of claim 1, wherein the shower comprises a shower and a plurality of nozzles connected to the shower, the plurality of nozzles being spaced apart along the width of the slag bed.
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| CN202110353861.8A CN112941252A (en) | 2021-04-01 | 2021-04-01 | Molten steel slag pretreatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113732304A (en) * | 2021-09-08 | 2021-12-03 | 上海交通大学 | Liquid metal 3D printing method and liquid metal 3D printing aluminum alloy material |
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| CN215856184U (en) * | 2021-04-01 | 2022-02-18 | 北京首钢国际工程技术有限公司 | Molten steel slag pretreatment device |
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| KR20100110238A (en) * | 2009-04-02 | 2010-10-12 | 주식회사 포스코 | Method for treating slag and apparatus used by the same |
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