CN114231694B - Device and method for heating waste steel by utilizing hot stuffy waste heat of steel slag - Google Patents
Device and method for heating waste steel by utilizing hot stuffy waste heat of steel slag Download PDFInfo
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- CN114231694B CN114231694B CN202111255327.XA CN202111255327A CN114231694B CN 114231694 B CN114231694 B CN 114231694B CN 202111255327 A CN202111255327 A CN 202111255327A CN 114231694 B CN114231694 B CN 114231694B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/56—Manufacture of steel by other methods
- C21C5/562—Manufacture of steel by other methods starting from scrap
- C21C5/565—Preheating of scrap
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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
- C21B3/08—Cooling slag
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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
- C21B2400/02—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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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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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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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses a device and a method for heating waste steel by utilizing steel slag hot stuffy waste heat. The steel slag hot disintegrating pool comprises a pool top cover, a pool body side wall, a pool bottom cover and a scrap steel cage; the tank top cover, the tank side wall and the tank bottom cover enclose to form a closed space to wrap the scrap steel cage; a tank bottom cover in the steel slag hot stuffy tank is provided with a waste steel cage slot; the slotted hole of the scrap steel cage is matched with the scrap steel cage; a waste steel cage bottom cover is arranged at the bottom of the waste steel cage slotted hole, and a waste steel cage top cover is arranged at the top of the waste steel cage slotted hole; the driving device comprises a pool top cover driving arm and a scrap steel cage bottom cover driving arm; the driving device can drive the pool top cover and the scrap steel cage bottom cover to be opened and closed. Sensible heat in the usable steel slag hot disintegration treatment process of this scheme preheats the steel scrap, improves the steel scrap and goes into the stove temperature, shortens the smelting cycle, promotes steel scrap usage proportion and service level.
Description
Technical Field
The invention relates to the field of steelmaking, in particular to a device and a method for heating scrap steel by utilizing hot stuffiness waste heat of steel slag.
Background
The steel slag is a main byproduct in the steelmaking process, and the production amount is about 8-15% of the yield of the crude steel. The quantity of steel slag generated in the steel industry of China is nearly 1 hundred million tons every year, and because the steel slag contains valuable elements such as Fe, caO and the like, the significance of resource utilization is great. At present, the steel slag in the steel industry mainly recovers metallic iron through the working procedures of crushing, screening, magnetic separation and the like, the tailings are mainly used as production raw materials of cement or cement concrete admixture, and before the steel slag, the screening and the magnetic separation, the steel slag needs to be pretreated to cool the thermal state steel slag to normal temperature, and simultaneously, the steel slag is crushed and separated from iron slag. The hot smoldering process is a mainstream process for steel slag pretreatment, but in the process of treating the steel slag by the hot smoldering process, the heat in the process of cooling the steel slag from 1200 ℃ to below 100 ℃ cannot be utilized, so that the energy waste is caused.
The steel industry in China mainly takes long-flow steelmaking of a blast furnace and a converter as a main part, takes short-flow steelmaking of an electric furnace as an auxiliary part, the yield of short-flow steel only accounts for 10 percent of the total amount of crude steel, and the method for steelmaking by taking scrap steel as a direct raw material omits the iron pre-processes of sintering, ironmaking and the like, reduces energy consumption and carbon dioxide emission, and improves the use amount of the scrap steel, which is the development trend of the steel industry.
Therefore, based on the hot stuffy process of the steel slag, the method can be used for heating the scrap steel, improving the charging temperature of the scrap steel, remarkably playing a role in reducing energy consumption and shortening smelting period, and being beneficial to improving the use proportion and the use level of the scrap steel.
The invention with publication number CN107779543B provides a device for preheating waste steel and alloy by using waste heat of converter steel slag and a using method thereof, which mainly comprises a waste steel and alloy adding chamber 1# and a high-temperature slag storage chamber 2# chamber, wherein in the using process, a top cover plate of the 1# chamber is opened to place the waste steel or alloy on a bottom plate, a heat-insulating cover plate is covered, and then the high-temperature slag tank is transported to the 2# chamber by a slag tank trolley to finish the baking and heating of the waste steel or alloy. The device can recycle the waste heat of the high-temperature slag of the converter, but the slag and the waste steel are stacked in two chambers, the heat exchange efficiency between the two chambers is poor, and the waste heat of the slag is not completely utilized.
Aiming at the defects of the technology, the scheme provides the device and the method for heating the waste steel by utilizing the hot stuffy waste heat of the steel slag, and the device and the method can preheat the waste steel by utilizing the sensible heat in the hot stuffy treatment process of the steel slag, improve the charging temperature of the waste steel, shorten the smelting period and improve the use proportion and the use level of the waste steel.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a device and a method for heating waste steel by utilizing the hot stuffy waste heat of steel slag.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides an utilize device of vexed waste heat heating steel scrap of steel slag heat which characterized in that: comprises a steel slag hot stuffy tank and a driving device which are arranged on a base.
The steel slag hot disintegrating tank comprises a tank top cover, a tank body side wall, a tank bottom cover and a waste steel cage.
The tank top cover cloth is arranged at the top of the side wall of the tank body and is in sliding connection with the top of the side wall of the tank body; the tank bottom cover cloth is arranged at the bottom of the side wall of the tank body, and the tank bottom cover is detachably connected with the side wall of the tank body; the pool top cover, the side wall of the pool body and the pool bottom cover are enclosed to form a closed space.
The scrap steel cage is arranged in the steel slag hot stuffy tank; a plurality of waste steel cage slotted holes for installing waste steel cages are formed in the tank bottom cover in the steel slag hot stuffy tank; the slotted hole of the scrap steel cage is matched with the scrap steel cage; a plurality of waste steel cage bottom covers which are connected with the tank bottom cover in a sliding mode are arranged at the bottoms of the waste steel cage slotted holes, and the waste steel cage bottom covers can cover the waste steel cage slotted holes in a sealing mode.
And a top cover of the steel scrap cage is arranged at the top of the steel scrap cage.
The driving device comprises a pool top cover driving arm and a scrap steel cage bottom cover driving arm; one end of the tank top cover driving arm is arranged on the base, and the other end of the tank top cover driving arm is connected with the tank top cover; one end of the driving arm of the waste steel cage bottom cover is arranged on the base, and the other end of the driving arm of the waste steel cage bottom cover is connected with the waste steel cage bottom cover.
As a further preferred aspect of the present invention, the tank bottom cover is disposed at the bottom of the side wall of the tank body, one side of the tank bottom cover is hinged to the side wall of the tank body, and the other side is connected with the side wall of the tank body by a buckle; the buckle connection of one side edge is loosened, and the pool bottom cover can be opened towards the other side edge.
As a further preferred aspect of the present invention, both sides of the sidewall of the tank body are respectively provided with vertical slide rails of the tank top cover arranged in the vertical direction; one end of the vertical slide rail of the tank top cover is arranged at the top of the side wall of the tank body, and the other end of the vertical slide rail extends to the bottom of the side wall of the tank body; the height of the bottom of the vertical sliding rail of the tank top cover is higher than that of the top of the scrap steel cage; the pool top cover is arranged on the pool top cover vertical slide rail and moves along the pool top cover vertical slide rail under the driving of the pool top cover driving arm; and a limit stop is arranged at the bottom end of the slide rail of the steel slag hot stuffy tank.
As a further preferable mode of the present invention, a tank top cover horizontal sliding rail perpendicular to the side wall of the tank body is arranged on the outer side surface of the side wall of the tank body; the horizontal sliding rails of the pool top cover are arranged at the top of the side wall of the pool body and are vertically connected with the vertical sliding rails of the pool top cover; the pool top cover can move along the horizontal sliding rail of the pool top cover under the driving of the pool top cover driving arm, and the opening and the closing of the pool top cover can be realized.
As a further preferable mode of the present invention, the steel slag hot stuffy tank further comprises a steel slag screen layer; the height of the steel slag sieve layer is lower than that of the limit stop block and higher than that of the top of the scrap steel cage; the steel slag sieve mesh layer is a filtering device which is formed by connecting steel bars in a staggered manner and can cover the water level of the whole steel slag hot disintegrating pool, and can be used for screening steel slag to enable the steel slag which is not larger than the grid holes of the steel slag sieve mesh layer to fall into the steel slag hot disintegrating pool; and a steel slag screen support is fixed at the bottom of the steel slag screen layer and used for supporting the steel slag screen layer when the steel slag screen layer is placed in a steel slag hot disintegrating pool.
As a further preferred mode of the invention, the side wall of the tank body is also provided with a spraying device which is used for cooling the steel slag and spraying water during hot stuffiness; the height of the spraying device is lower than that of the limit stop; the spraying device is provided with a spraying direction obliquely facing the pool top cover and the pool bottom cover.
As a further preferable mode of the present invention, a scrap steel cage bottom cover connecting rod is provided between the plurality of scrap steel cage bottom covers; the scrap steel cage bottom cover driving arm is fixed with the scrap steel cage bottom cover connecting rod and controls the opening and closing of the plurality of scrap steel cage bottom covers.
As a further preferable mode of the present invention, a scrap steel cage connecting rod is disposed between the plurality of scrap steel cages for fixing the plurality of scrap steel cages; be provided with the lug on the scrap steel cage top cap, be convenient for the driving through the lug with the whole lifting by crane of scrap steel cage and the position of falling.
As a further preferable mode of the present invention, the bottom of the base is provided with a hopper trolley slide rail; the hopper trolley sliding rail is provided with a hopper trolley which can freely move along the hopper trolley sliding rail; the hopper trolley can move to the bottom of the steel slag hot stuffy tank and convey steel slag falling after the tank bottom cover is opened and scrap steel falling after the scrap steel cage bottom cover is opened.
A method for heating scrap steel by utilizing the hot stuffy waste heat of steel slag is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, operating a pool top cover driving arm to drive a pool top cover to move along a horizontal sliding rail of the pool top cover and open the pool top cover;
s2, hoisting the whole scrap steel cage by using a travelling crane, and then putting the scrap steel cage into a scrap steel cage slot hole in a steel slag hot stuffy tank matched with the scrap steel cage; opening a top cover of the scrap steel cage, filling scrap steel to be heated, and closing the top cover of the scrap steel cage after the completion;
s3, hoisting the steel slag screen layer with the steel slag screen support by using a travelling crane, and enabling the steel slag screen layer to fall into a steel slag hot stuffy pool;
s4, filling steel slag into the steel slag hot stuffy tank by utilizing a travelling crane; part of the steel slag with small block diameter falls into the steel slag hot stuffy pool through the grid holes of the steel slag sieve layer, and part of the steel slag with large block diameter is left on the steel slag sieve layer;
s5, opening a spraying device, and cooling the steel slag by water, so that the surface of the steel slag is solidified and cracked;
s6, after the surface moisture of the steel slag is evaporated to dryness, operating a top cover driving arm of the pool to drive the top cover of the pool to move along a horizontal sliding rail of the top cover of the pool, closing the top cover of the pool, and then operating the top cover driving arm of the pool to enable the top cover of the pool to move along a vertical sliding rail of the top cover of the pool towards the bottom cover of the pool; the steel slag with large block diameter after water cooling can be crushed in the descending process, and the steel slag falls into a steel slag hot stuffy tank after being crushed; the pool top cover stops moving after moving to the position of the limit stop;
s7, starting hot disintegration of the steel slag, and spraying water into the steel slag hot disintegration tank for a plurality of times through a spraying device in the process;
s8, after the hot sealing is finished, moving the hopper trolley to the bottom of the scrap steel cage through the hopper trolley slide rail; operating a scrap steel cage bottom cover driving arm, opening a scrap steel cage bottom cover, and enabling heated scrap steel to fall into a hopper trolley from a scrap steel cage and be conveyed to a steelmaking workshop for utilization;
s9, after all the scrap steel is transported, operating a scrap steel cage bottom cover driving arm, and closing the scrap steel cage bottom cover; the empty hopper trolley is moved to the bottom of the pool bottom cover, the buckle connection at one side edge of the pool bottom cover is loosened, the pool bottom cover can be opened towards the other side edge, and the steel slag falls into the hopper trolley and is conveyed to a storage room to be processed on the next step.
The invention has the following beneficial effects:
1. the device can fully recycle the sensible heat in the steel slag hot-disintegration treatment process, and achieves the effect of energy recycling.
2. The device can further improve the use proportion and the use level of the steel scraps of the converter, and achieves the effect of reducing the production cost.
3. The device heats the scrap steel, improves the charging temperature of the scrap steel and shortens the smelting period; the influence of weather and seasons on the raw materials is reduced.
Drawings
FIG. 1 is a front view of a device for heating scrap steel by utilizing the hot stuffy waste heat of steel slag.
FIG. 2 is a top view of the apparatus for heating steel scrap by utilizing the hot stuffy waste heat of the steel slag according to the invention.
FIG. 3 is a left side view of the device for heating the steel scrap by utilizing the hot stuffy waste heat of the steel slag.
Among them are:
10. a base; 11. a hopper car slide rail; 12. a hopper trolley;
20. hot disintegrating the steel slag in a tank; 21. a tank top cover; 22. a side wall of the tank body; 23. a tank bottom cover; 231. a scrap steel cage slot; 24. a scrap steel cage; 241. a bottom cover of the scrap steel cage; 242. a top cover of the steel scrap cage; 243. a connecting rod is covered at the bottom of the scrap steel cage; 244. a scrap steel cage connecting rod; 25. a vertical sliding rail of the pool top cover; 26. a horizontal sliding rail of the pool top cover; 27. a limit stop block; 28. a steel slag screen layer; 281. a steel slag screen support; 29. a spraying device;
30. a drive device; 31. a driving arm is covered at the bottom of the scrap steel cage; 32. the pool top cover is provided with a driving arm.
Detailed Description
The present invention will be described in further detail with reference to the drawings and specific preferred embodiments.
In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the protection scope of the present invention.
The present invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
As shown in figure 1, the device for heating the scrap steel by utilizing the hot stuffy waste heat of the steel slag is characterized in that: comprises a steel slag hot stuffy tank 20 and a driving device 30 which are arranged on a base 10.
The steel slag hot stuffy tank 20 comprises a tank top cover 21, a tank body side wall 22, a tank bottom cover 23, a scrap steel cage 24, a tank top cover vertical slide rail 25, a tank top cover horizontal slide rail 26, a limit stop 27, a steel slag sieve layer 28 and a spraying device 29.
The tank top cover 21 is arranged at the top of the side wall 22 of the tank body and is connected with the top of the side wall 22 of the tank body in a sliding way. The tank bottom cover 23 is arranged at the bottom of the side wall 22 of the tank body, one side edge of the tank bottom cover 23 is hinged with the side wall 22 of the tank body, and the other side edge is connected with the side wall 22 of the tank body in a buckling way; the cell bottom cover 23 can be opened towards the other side by loosening the buckling connection at one side. When the clamping buckle is connected, the pool top cover 21, the side wall 22 of the pool body and the pool bottom cover 23 surround to form a closed space.
The scrap steel cage 24 is arranged in the steel slag hot stuffy tank 20. The scrap steel cage 24 includes a scrap steel cage bottom cover 241, a scrap steel cage top cover 242, a scrap steel cage bottom cover connecting rod 243 and a scrap steel cage connecting rod 244.
As shown in fig. 2, a plurality of steel scrap cage slots 231 for installing the steel scrap cages 24 are formed in the bottom cover 23 of the steel slag hot stuffy tank 20, and the steel scrap cage slots 231 are matched with the steel scrap cages 24. The bottom of the scrap steel cage slot hole 231 is provided with a plurality of scrap steel cage bottom covers 241 which are connected with the pool bottom cover 23 in a sliding mode, and the scrap steel cage bottom covers 241 can cover the scrap steel cage slot hole 231.
And scrap steel cage bottom cover connecting rods 243 are arranged among the scrap steel cage bottom covers 241. The scrap steel cage bottom cover driving arms 31 are fixed with the scrap steel cage bottom cover connecting rods 243, and control the opening and closing of the scrap steel cage bottom covers 241.
And a steel scrap cage top cover 242 is arranged at the top of the steel scrap cage 24.
And a scrap steel cage connecting rod 244 is arranged among the scrap steel cages 24 and is used for fixing the scrap steel cages 24. The scrap steel cage top cover 242 is provided with lifting lugs, and the travelling crane lifts and lowers the whole scrap steel cage 24 through the lifting lugs.
And two sides of the side wall 22 of the tank body are respectively provided with a vertical slide rail 25 of the tank top cover arranged in the vertical direction. One end of the vertical slide rail 25 of the tank top cover is arranged at the top of the side wall 22 of the tank body, and the other end extends to the bottom of the side wall 22 of the tank body; the height of the bottom of the vertical slide rail 25 of the tank top cover is higher than that of the top of the scrap steel cage 24; the tank top cover 21 is arranged on the vertical sliding rail 25 of the tank top cover and moves along the vertical sliding rail 25 of the tank top cover under the driving of the driving arm 32 of the tank top cover.
And a limit stop 27 is arranged at the bottom end of the vertical slide rail 25 of the pool top cover. The limit stop 27 can limit the lowest position of the pool top cover 21 when the pool top cover driving arm 32 drives the pool top cover 21 to move along the pool top cover vertical slide rail 25 to the pool bottom cover 23 direction, so as to prevent the pool top cover 21 from falling.
A tank top cover horizontal sliding rail 26 vertical to the tank body side wall 22 is arranged on the outer side surface of the tank body side wall 22; the tank top cover horizontal slide rails 26 are arranged at the top of the side wall 22 of the tank body and are vertically connected with the tank top cover vertical slide rails 25; the tank top cover 21 can move along the horizontal sliding rail 26 of the tank top cover under the driving of the driving arm 32 of the tank top cover, and the tank top cover 21 can be opened and closed.
The steel slag hot stuffy tank 20 further comprises a steel slag screen layer 28; the height of the steel slag screen layer 28 is lower than that of the limit stop 27 and higher than that of the top of the steel scrap cage 24. The steel slag sieve mesh layer 28 is a filtering device which is formed by connecting steel bars in a staggered manner, is latticed and can cover the horizontal plane of the whole steel slag hot disintegrating pool 20, and can be used for screening steel slag, so that the steel slag which is not larger than the grid holes of the steel slag sieve mesh layer 28 falls into the steel slag hot disintegrating pool 20.
A steel slag screen support 281 is fixed at the bottom of the steel slag screen layer 28 and is used for supporting the steel slag screen layer 28 when the steel slag screen layer 28 is placed in the steel slag hot stuffy tank 20.
And the side wall 22 of the tank body is also provided with a spraying device 29 for cooling the steel slag by pumping water to solidify and crack the surface of the steel slag, so that the steel slag is conveniently crushed and falls into the steel slag hot stuffy tank 20. The spraying device 29 is also used for spraying water to the steel slag in the hot disintegration process, so that the steel slag can release heat more quickly and thoroughly to heat the scrap steel.
The height of the spraying device 29 is lower than that of the limit stop 27; the spraying device 29 is provided with a spraying direction which is obliquely towards the tank top cover 21 and the tank bottom cover 23.
As shown in fig. 3, the driving device 30 includes a scrap box bottom cover driving arm 31 and a pool top cover driving arm 32.
One end of the scrap steel cage bottom cover driving arm 31 is arranged on the base 10, and the other end is connected with the scrap steel cage bottom cover 241. The scrap steel cage bottom cover driving arm 31 can open the scrap steel cage bottom cover 241, so that the heated scrap steel falls into the hopper trolley 12 from the scrap steel cage 24 and is conveyed to a steelmaking workshop for utilization.
One end of the tank top cover driving arm 32 is arranged on the base 10, and the other end is connected with the tank top cover 21. The tank top driving arm 32 can drive the tank top 21 to move along the horizontal tank top sliding rail 26 for opening and closing the tank top 21.
The bottom of the base 10 is provided with a hopper trolley slide rail 11, and the hopper trolley slide rail 11 is provided with a hopper trolley 12 which can freely move along the hopper trolley slide rail 11. The hopper trolley 12 can move to the bottom of the steel slag hot stuffy tank 20, and conveys away steel slag falling after the tank bottom cover 23 is opened and steel scrap falling after the steel scrap cage bottom cover 241 is opened.
The device can fully recycle sensible heat in the steel slag hot-disintegration treatment process, achieves the effect of energy recycling, and simultaneously further improves the use proportion and the use level of the waste steel of the converter, thereby achieving the effect of reducing the production cost.
The heating of the scrap steel improves the charging temperature of the scrap steel, shortens the smelting period and reduces the influence of weather and seasons on raw materials.
A method for heating scrap steel by utilizing hot stuffy waste heat of steel slag is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, operating a pool top cover driving arm 32 to drive a pool top cover 21 to move along a pool top cover horizontal sliding rail 26 and open the pool top cover 21;
s2, hoisting the whole scrap steel cage 24 by using a travelling crane, and then placing the whole scrap steel cage into a scrap steel cage slot hole 231 matched with the scrap steel cage 24; opening the top cover 242 of the steel scrap cage, filling the steel scrap to be heated, and closing the top cover 242 of the steel scrap cage after the completion;
s3, hoisting the steel slag screen layer 28 with the steel slag screen support 281 by utilizing a travelling crane, and enabling the steel slag screen layer to fall into the steel slag hot stuffy tank 20;
s4, filling steel slag into the steel slag hot stuffy tank 20 by utilizing a travelling crane; part of the steel slag with small block diameter falls into the steel slag hot stuffy tank 20 through the grid holes of the steel slag screen layer 28, and part of the steel slag with large block diameter is left on the steel slag screen layer 28;
s5, opening the spraying device 29, and cooling the steel slag by water to solidify and crack the surface of the steel slag;
s6, after the water on the surface of the steel slag is evaporated to dryness, operating the pool top cover driving arm 32 to drive the pool top cover 21 to move along the pool top cover horizontal sliding rail 26, closing the pool top cover 21, and then operating the pool top cover driving arm 32 to enable the pool top cover 21 to move towards the pool bottom cover 23 along the pool top cover vertical sliding rail 25; the steel slag with large block diameter after being cooled by water can be crushed in the descending process, and the steel slag falls into the steel slag hot stuffy tank 20 after being crushed; the pool top cover 21 stops moving after moving to the position of the limit stop 27;
s7, starting hot disintegration of the steel slag, and spraying water into the steel slag hot disintegration tank 20 for a plurality of times through a spraying device 29 in the process;
s8, after the hot sealing is finished, moving the hopper trolley 12 to the bottom of the scrap steel cage 24 through the hopper trolley slide rail 11; operating the scrap steel cage bottom cover driving arm 31, opening the scrap steel cage bottom cover 241, and allowing the heated scrap steel to fall into the hopper trolley 12 from the scrap steel cage 24 and be conveyed to a steelmaking workshop for utilization;
s9, after all the scrap steel is transported, operating a scrap steel cage bottom cover driving arm 31 and closing a scrap steel cage bottom cover 241; the empty hopper trolley 12 is moved to the bottom of the pool bottom cover 23, the buckle connection of one side edge of the pool bottom cover 23 is loosened, the pool bottom cover 23 can be opened towards the other side edge, and the steel slag falls into the hopper trolley 12 and is conveyed to a storage room to be processed next.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent changes may be made within the technical spirit of the present invention, and the technical scope of the present invention is also covered by the present invention.
Claims (9)
1. The utility model provides an utilize device of vexed waste heat heating steel scrap of steel slag heat which characterized in that: comprises a steel slag hot stuffy tank (20) and a driving device (30) which are arranged on a base (10);
the steel slag hot stuffy tank (20) comprises a tank top cover (21), a tank side wall (22), a tank bottom cover (23) and a scrap steel cage (24);
the tank top cover (21) is arranged at the top of the side wall (22) of the tank body and is connected with the top of the side wall (22) of the tank body in a sliding way; the tank bottom cover (23) is arranged at the bottom of the side wall (22) of the tank body, and the tank bottom cover (23) is detachably connected with the side wall (22) of the tank body; the pool top cover (21), the side wall (22) and the pool bottom cover (23) surround to form a closed space;
the scrap steel cage (24) is arranged in the slag hot stuffy tank (20); a tank bottom cover (23) in the steel slag hot stuffy tank (20) is provided with a plurality of waste steel cage slotted holes (231) for mounting a waste steel cage (24); the scrap steel cage slotted hole (231) is matched with the scrap steel cage (24); the bottom of the scrap steel cage slot hole (231) is provided with a plurality of scrap steel cage bottom covers (241) which are connected with the tank bottom cover (23) in a sliding way, and the scrap steel cage bottom covers (241) cover the scrap steel cage slot hole (231);
a steel scrap cage top cover (242) is arranged at the top of the steel scrap cage (24);
the driving device (30) comprises a scrap steel cage bottom cover driving arm (31) and a pool top cover driving arm (32); one end of the scrap steel cage bottom cover driving arm (31) is arranged on the base (10), and the other end of the scrap steel cage bottom cover driving arm is connected with the scrap steel cage bottom cover (241); one end of the tank top cover driving arm (32) is arranged on the base (10), and the other end of the tank top cover driving arm is connected with the tank top cover (21);
the tank bottom cover (23) is arranged at the bottom of the side wall (22) of the tank body, one side of the tank bottom cover (23) is hinged with the side wall (22) of the tank body, and the other side of the tank bottom cover is connected with the side wall (22) of the tank body in a buckling manner; the buckle connection at one side edge is loosened, and the pool bottom cover (23) is opened towards the other side edge.
2. The device for heating the waste steel by utilizing the hot stuffy waste heat of the steel slag as claimed in claim 1, wherein: both sides of the side wall (22) of the tank body are respectively provided with vertical slide rails (25) of a tank top cover which are arranged in the vertical direction; one end of the vertical sliding rail (25) of the tank top cover is arranged at the top of the side wall (22) of the tank body, and the other end of the vertical sliding rail extends towards the bottom of the side wall (22) of the tank body; the height of the bottom of the vertical sliding rail (25) of the tank top cover is higher than that of the top of the scrap steel cage (24); the pool top cover (21) is arranged on the pool top cover vertical sliding rail (25) and moves along the pool top cover vertical sliding rail (25) under the driving of the pool top cover driving arm (32);
and a limit stop (27) is arranged at the bottom end of the vertical slide rail (25) of the pool top cover.
3. The device for heating the waste steel by utilizing the hot stuffy waste heat of the steel slag as claimed in claim 1, wherein: a pool top cover horizontal sliding rail (26) which is vertical to the side wall (22) of the pool body is arranged on the outer side surface of the side wall (22) of the pool body; the tank top cover horizontal sliding rails (26) are arranged at the top of the side wall (22) of the tank body and are vertically connected with the tank top cover vertical sliding rails (25); the pool top cover (21) moves along the horizontal slide rail (26) of the pool top cover under the driving of the driving arm (32) of the pool top cover, namely, the opening and closing of the pool top cover (21) are realized.
4. The device for heating the waste steel by utilizing the hot stuffy waste heat of the steel slag as claimed in claim 3, wherein: the steel slag hot stuffy tank (20) also comprises a steel slag screen layer (28); the height of the steel slag screen layer (28) is lower than that of the limit stop block (27) and higher than that of the top of the steel scrap cage (24); the steel slag screen layer (28) is a filtering device which is formed by connecting steel bars in a staggered manner to form a grid shape and covers the horizontal plane of the whole steel slag hot disintegrating pool (20), and is used for screening steel slag, so that the steel slag which is not larger than the grid holes of the steel slag screen layer (28) falls into the steel slag hot disintegrating pool (20); and a steel slag screen support (281) is fixed at the bottom of the steel slag screen layer (28) and is used for supporting the steel slag screen layer (28) when the steel slag screen layer (28) is placed into the steel slag hot closed pool (20).
5. The device for heating the waste steel by utilizing the hot stuffy waste heat of the steel slag as claimed in claim 1, wherein: the side wall (22) of the tank body is also provided with a spraying device (29) for cooling the steel slag and spraying water during hot disintegration; the height of the spraying device (29) is lower than that of the limit stop (27); the spraying device (29) is provided with a spraying direction which is inclined towards the tank top cover (21) and the tank bottom cover (23).
6. The device for heating the waste steel by utilizing the hot stuffy waste heat of the steel slag as claimed in claim 1, wherein: a connecting rod (243) for the bottom cover of the scrap steel cage is arranged between the plurality of bottom covers (241) of the scrap steel cage; the scrap steel cage bottom cover driving arm (31) is fixed with a scrap steel cage bottom cover connecting rod (243) and controls the opening and closing of a plurality of scrap steel cage bottom covers (241).
7. The device for heating the steel scrap by utilizing the hot stuffy waste heat of the steel slag according to the claim 1, which is characterized in that: a scrap steel cage connecting rod (244) is arranged among the scrap steel cages (24) and used for fixing the scrap steel cages (24); the scrap steel cage top cover (242) is provided with lifting lugs, so that the travelling crane can integrally lift and drop the scrap steel cage (24) through the lifting lugs.
8. The device for heating the steel scrap by utilizing the hot stuffy waste heat of the steel slag according to the claim 1, which is characterized in that: a hopper trolley slide rail (11) is arranged at the bottom of the base (10); the hopper trolley (12) which can freely move along the hopper trolley slide rail (11) is arranged on the hopper trolley slide rail (11); the hopper trolley (12) moves to the bottom of the steel slag hot stuffy tank (20) and carries away steel slag falling after the tank bottom cover (23) is opened and steel scrap falling after the steel scrap cage bottom cover (241) is opened.
9. The use method of the device for heating the steel scrap by utilizing the hot stuffy waste heat of the steel slag according to any one of claims 1 to 8 is characterized in that: the method specifically comprises the following steps:
s1, operating a pool top cover driving arm (32), driving a pool top cover (21) to move along a horizontal sliding rail (26) of the pool top cover, and opening the pool top cover (21);
s2, hoisting the whole scrap steel cage (24) by using a travelling crane, and then putting the whole scrap steel cage into a scrap steel cage slotted hole (231) matched with the scrap steel cage (24); opening a top cover (242) of the steel scrap cage, filling the steel scrap to be heated, and closing the top cover (242) of the steel scrap cage after the steel scrap to be heated is filled;
s3, hoisting the steel slag sieve layer (28) with the steel slag sieve support (281) by utilizing a travelling crane to fall into the steel slag hot stuffy tank (20);
s4, filling steel slag into the steel slag hot stuffy tank (20) by utilizing a travelling crane; part of the steel slag with small block diameter falls into the steel slag hot stuffy tank (20) through the grid holes of the steel slag screen layer (28), and part of the steel slag with large block diameter is left on the steel slag screen layer (28);
s5, opening a spraying device (29), and cooling the steel slag by water to solidify and crack the surface of the steel slag;
s6, after the water on the surface of the steel slag is evaporated to dryness, operating a pool top cover driving arm (32), driving a pool top cover (21) to move along a horizontal sliding rail (26) of the pool top cover, closing the pool top cover (21), and then operating the pool top cover driving arm (32) to enable the pool top cover (21) to move towards a pool bottom cover (23) along a vertical sliding rail (25) of the pool top cover; the steel slag with large block diameter after being cooled by water is crushed in the descending process, and the steel slag falls into a steel slag hot stuffy tank (20) after being crushed; the pool top cover (21) stops moving after moving to the position of the limit stop (27);
s7, starting hot disintegration of the steel slag, and spraying water into the steel slag hot disintegration pool (20) for a plurality of times through a spraying device (29) in the process;
s8, after the hot sealing is finished, moving the hopper trolley (12) to the bottom of the scrap steel cage (24) through the hopper trolley slide rail (11); operating a scrap steel cage bottom cover driving arm (31), opening a scrap steel cage bottom cover (241), and enabling heated scrap steel to fall into a hopper trolley (12) from a scrap steel cage (24) and be conveyed to a steelmaking workshop for utilization;
s9, after all the scrap steel is transported, operating a scrap steel cage bottom cover driving arm (31) and closing a scrap steel cage bottom cover (241); the empty hopper trolley (12) is moved to the bottom of the pool bottom cover (23), the buckle connection of one side edge of the pool bottom cover (23) is loosened, the pool bottom cover (23) is opened towards the other side edge, and the steel slag falls into the hopper trolley (12) and is conveyed to a storage room to be processed next.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111255327.XA CN114231694B (en) | 2021-10-27 | 2021-10-27 | Device and method for heating waste steel by utilizing hot stuffy waste heat of steel slag |
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| CN202111255327.XA CN114231694B (en) | 2021-10-27 | 2021-10-27 | Device and method for heating waste steel by utilizing hot stuffy waste heat of steel slag |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2507207A1 (en) * | 1981-06-05 | 1982-12-10 | Clesid Sa | Heat energy recovery from slag - in granular form in fluidised beds |
| CN107779543A (en) * | 2016-08-26 | 2018-03-09 | 鞍钢股份有限公司 | Device for preheating scrap steel and alloy by using waste heat of converter steel slag and using method |
| CN207727097U (en) * | 2017-09-30 | 2018-08-14 | 马钢集团设计研究院有限责任公司 | A kind of top row vapour movable type hot stuffy processing device for steel slag |
| CN209322915U (en) * | 2018-12-05 | 2019-08-30 | 葫芦岛首钢东华机械有限公司 | A kind of bored slag processing equipment of heat |
| CN210420022U (en) * | 2019-09-03 | 2020-04-28 | 苏州正益诚新能源科技有限公司 | Scrap steel preheating furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT412283B (en) * | 2003-05-16 | 2004-12-27 | Voest Alpine Ind Anlagen | METHOD FOR RECYCLING SLAG |
-
2021
- 2021-10-27 CN CN202111255327.XA patent/CN114231694B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2507207A1 (en) * | 1981-06-05 | 1982-12-10 | Clesid Sa | Heat energy recovery from slag - in granular form in fluidised beds |
| CN107779543A (en) * | 2016-08-26 | 2018-03-09 | 鞍钢股份有限公司 | Device for preheating scrap steel and alloy by using waste heat of converter steel slag and using method |
| CN207727097U (en) * | 2017-09-30 | 2018-08-14 | 马钢集团设计研究院有限责任公司 | A kind of top row vapour movable type hot stuffy processing device for steel slag |
| CN209322915U (en) * | 2018-12-05 | 2019-08-30 | 葫芦岛首钢东华机械有限公司 | A kind of bored slag processing equipment of heat |
| CN210420022U (en) * | 2019-09-03 | 2020-04-28 | 苏州正益诚新能源科技有限公司 | Scrap steel preheating furnace |
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| CN114231694A (en) | 2022-03-25 |
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