CN214779271U - High-order feed bin steel scrap adding system - Google Patents
High-order feed bin steel scrap adding system Download PDFInfo
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- CN214779271U CN214779271U CN202120850389.4U CN202120850389U CN214779271U CN 214779271 U CN214779271 U CN 214779271U CN 202120850389 U CN202120850389 U CN 202120850389U CN 214779271 U CN214779271 U CN 214779271U
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Abstract
The utility model belongs to the technical field of ferrous metallurgy, especially, relate to a high-order feed bin steel scrap joining system. It can reduce the heat loss caused by the increase of the scrap steel amount, reduce the molten iron consumption of the converter, increase the billet yield and reduce the steel-making production cost. Comprises an elevated bunker; the high-level stock bin comprises a stock bin body and a blanking pipe arranged below the stock bin body; the two sides of the storage bin body are respectively provided with an air suction pipe, the first end of each air suction pipe is connected with the storage bin body, and the first end and the storage bin body can ventilate; the second end of each air suction pipe is communicated with the blanking pipe; the feed opening of the feed pipe is communicated with the feed opening of the converter; in the converter blowing process, the generated high-temperature furnace gas enters a high-level storage bin to finish preheating.
Description
Technical Field
The utility model belongs to the technical field of ferrous metallurgy, especially, relate to a high-order feed bin steel scrap joining system.
Background
At present, there are two ways of feeding scrap steel into a converter: one is that the waste steel enters the furnace directly through the waste steel hopper (normal temperature), and the other is that the waste steel in the waste steel hopper enters the furnace directly through preheating. Although the temperature of the steel scrap before entering the converter is higher, the actual temperature of the steel scrap entering the converter is lower due to longer on-site residence time, and the molten iron consumption of the converter, the component control (P, S) of the blowing process and the slag charge consumption of the converter are directly influenced.
Disclosure of Invention
The utility model discloses be exactly to the defect that prior art exists, provide a high-order feed bin steel scrap joining system, it can reduce the calorific loss who leads to because of the increase of steel scrap volume, reduces converter molten iron consumption, increases steel billet output, reduces steelmaking manufacturing cost.
In order to realize the purpose, the utility model adopts the following technical proposal, comprising a high-level stock bin; the high-level storage bin is characterized by comprising a storage bin body and a discharging pipe arranged below the storage bin body; the two sides of the storage bin body are respectively provided with an air suction pipe, the first end of each air suction pipe is connected with the storage bin body, and the first end of each air suction pipe is air-permeable and impermeable to materials between the storage bin body and the storage bin body; the second end of each air suction pipe is communicated with the blanking pipe; the feed opening of the feed pipe is communicated with the feed opening of the converter; in the converter blowing process, the generated high-temperature furnace gas enters a high-level storage bin to finish preheating.
Furthermore, a ring of annular channel is arranged outside the bin body, a plurality of air inlet holes are formed in the annular channel and on the outer wall of the bin body, and the first end of the air suction pipe is communicated with the annular channel; the high-temperature furnace gas sequentially passes through the air suction pipe, the annular channel and the air inlet hole from the blanking pipe to the interior of the storage bin body.
Furthermore, the aperture of the air inlet is enough to ventilate but not allow the material particles to come out.
Furthermore, a bin cover covers the top of the high-level bin, and a bin opening and closing valve for discharging is arranged at the bottom of the bin body.
Further, install the fan on the feed bin body lateral wall, this fan is used for accelerateing the circulation of air of feed bin body inner chamber.
Further, the overhead bin is erected at a high position through a support.
Furthermore, two sides of the bin body are respectively provided with a fan, and the two fans are arranged oppositely.
Further, the device also comprises an underground stock bin, a feeding trolley and a high-level feeding belt; the feeding trolley runs on a slope channel, the starting point of the slope channel is positioned below the underground storage bin, and the end point of the slope channel is positioned above the starting end of the high-position feeding belt; the tail end of the feeding belt is positioned above the high-level stock bin.
Furthermore, the tail end of the feeding belt is communicated with an inlet of a downward sliding channel pipe, and an inlet of the high-level bin is positioned below an outlet of the downward sliding channel pipe; and the waste steel material on the feeding belt is conveyed to the tail end and falls into the high-temperature storage bin through the lower sliding channel pipe.
Furthermore, a weighing hopper is arranged between the lower sliding channel pipe of the feeding belt and the high-level stock bin, and materials sequentially pass through the lower sliding channel pipe and the weighing hopper to enter the high-level stock bin; the weighing hopper comprises a weighing hopper body and a hopper neck; the lower part of the hopper neck is communicated with a discharging slideway, and the discharging slideway is communicated with a discharging port of the hopper; the discharge port of the hopper is communicated with the high-level bin; and the hopper neck is provided with a vibrating screen.
Compared with the prior art the utility model discloses beneficial effect.
The utility model discloses high-order feed bin steel scrap joining system, this system can reduce the calorific loss who leads to because of the increase of steel scrap volume, reduce converter molten iron consumption, increase steel billet output, reduce steelmaking manufacturing cost.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of protection of the present invention is not limited to the following description.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partially enlarged schematic view of fig. 1.
Fig. 3 is a schematic structural view of the weighing hopper of the present invention.
Fig. 4 is an overall schematic view of the use state.
Fig. 5 is a partially enlarged schematic view of fig. 4.
In the figure, 1 is a bin body, 2 is a bin cover, 3 is a fan, 4 is an annular channel, 5 is an air suction pipe, 6 is a connecting pipeline, 7 is a feeding trolley, 8 is an air inlet, 9 is a discharging pipe, 10 is a bin opening and closing valve, 11 is a bin neck, 12 is a vibrating screen, 13 is a bin body, 14 is a discharging slideway, 15 is a high-temperature feeding belt, 16 is a converter, 17 is an underground bin, 18 is a high-level bin, and 19 is a weighing hopper.
Detailed Description
As shown in fig. 1-5, the present invention includes an elevated bunker 18; the high-level stock bin 18 comprises a stock bin body 1 and a blanking pipe 9 arranged below the stock bin body 1; two sides of the bin body 1 are respectively provided with an air suction pipe 5, the first end of each air suction pipe 5 is connected with the bin body 1, and the first end and the bin body 1 can also circulate air (ventilate and impermeable); the second end of each air suction pipe 5 is communicated with the blanking pipe 9.
The feed opening of the feed pipe 9 is communicated with the feed opening of the converter 16; in the blowing process of the converter 16, the generated high-temperature furnace gas enters the high-level storage bin 18 to finish preheating.
In actual production, also can try the circumstances and decide, set up the screen cloth between aspiration channel 5 second end and unloading pipe 9, like this, can effectively prevent, when unloading in the unloading pipe 9, the material can not get into aspiration channel 5, and blast furnace steam can be unimpeded but get into feed bin body 1 through aspiration channel 5.
In the first specific embodiment, a ring of annular channel 4 is arranged outside the silo body 1, a plurality of air inlet holes 8 are arranged in the annular channel 4 and on the outer wall of the silo body 1, and the first end of the air suction pipe 5 is communicated with the annular channel 4; the high-temperature furnace gas sequentially passes through the air suction pipe 5, the annular channel 4 and the air inlet hole 8 from the blanking pipe 9 to the feed bin body 1. In practice, the annular channel 4 and the silo body 1 can be welded together.
In the second embodiment, the outer wall of the silo body 1 corresponding to the annular channel 4 is provided with holes, and the holes are provided with screens, so that the effect of air permeability and material impermeability can be achieved.
More preferably, the aperture of the air inlet is enough to ventilate (circulate air) but not to discharge material particles. Namely, the air-permeable and material-impermeable material.
Preferably, the top of the high-level bin 18 is covered with a bin cover 2, and the bottom of the bin body 1 is provided with a bin switch 10 for discharging.
Preferably, a (suction) fan 3 is installed on the side wall of the silo body 1, and the fan 3 is used for accelerating the air circulation in the inner cavity of the silo body 1.
Preferably, the elevated bunker 18 is elevated by a stand.
More preferably, two sides of the silo body 1 are respectively provided with a fan 3, and the two fans 3 are arranged oppositely. The fan 3 is communicated with the inner cavity of the bin body 1 through a fan 3 connecting pipe 6. The fans 3 are arranged on both sides to accelerate hot gas circulation.
Preferably, the device also comprises an underground stock bin 17, a feeding trolley 7 and a high-temperature feeding belt 15; the feeding trolley 7 runs on a slope channel, the starting point of the slope channel is positioned below the underground storage bin 17 (the feeding trolley 7 is convenient to charge), and the end point of the slope channel is positioned above the starting end of the high-temperature feeding belt 15 (the feeding trolley 7 is convenient to discharge to the feeding belt); the end of the loading belt is located above the elevated bunker 18. The underground hopper is used for storing waste steel materials, is transported to the position above the high-temperature feeding belt 15 along a slope channel through the feeding trolley 7, is discharged to the feeding belt, and is transported to the tail end by the belt to fall into the high-level stock bin 18.
More preferably, the tail end of the feeding belt is communicated with an inlet of a lower sliding channel pipe, and an inlet of the high-level bin 18 is positioned below an outlet of the lower sliding channel pipe; and the waste steel material on the feeding belt is conveyed to the tail end and falls into the high-temperature storage bin through the lower sliding channel pipe.
More preferably, a weighing hopper 19 is arranged between the lower sliding channel pipe of the feeding belt and the high-level storage bin 18, and a weighing sensor is integrated on the weighing hopper 19. The materials sequentially pass through a lower sliding channel pipe and a weighing hopper 19 and enter a high-level stock bin 18; the weighing hopper 19 comprises a weighing hopper body 13 and a hopper neck 11; the lower part of the hopper neck 11 is communicated with a discharging slideway 14, and the discharging slideway 14 is communicated with a hopper discharging port; the discharge port of the hopper is communicated with an elevated bunker 18; and a vibrating screen 12 is arranged on the hopper neck 11.
The utility model discloses a high temperature flue gas preheats and has solved following problem:
1. the temperature loss caused by the overlong retention time of the preheated steel scrap in the steel scrap hopper, namely the temperature of the steel scrap entering the converter 16 is low although the temperature of the steel scrap discharged from the converter is high, and the heat efficiency is reduced.
2. The increased amount of scrap steel charged into the converter 16 directly affects the heat balance effect of the converter 16, so that the final temperature and the components do not meet the tapping requirements and must be treated by reblowing, and further the slag charge cost and the refractory cost of the converter 16 are increased.
3. In the blowing process of the converter 16, the temperature of the molten pool is not uniformly raised, so that the splashing phenomenon is caused, and the consumption of steel materials is influenced.
Summary of the use procedure: the prepared scrap steel (mainly light and thin materials) is conveyed to an underground storage bin 17, conveyed to a feeding belt through a feeding trolley 7 and directly conveyed to an elevated storage bin 18 through belt rotation. The high-temperature furnace gas generated in the blowing process of the converter 16 is sucked into the high-level stock bin 18 by starting the suction fan 3, and a temperature sensor can be arranged on the high-level stock bin 18, so that the waste steel is added into the converter 16 when the temperature is about 500 ℃, namely the preheating temperature of the waste steel is about 500 ℃, and the aims of reducing iron consumption, saving energy and protecting environment are fulfilled.
Preheat the scrap steel through suction fan 3 direct utilization converter 16 high temperature flue gas, the utility model discloses can reduce the carbon emission in the air, reduce 16 molten iron consumptions of converter, accurate control converting process composition control and reduce 16 slag charge consumptions of converter. The device can reduce the production cost of steel making and increase the profit margin of enterprises.
It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (10)
1. A scrap steel adding system of an elevated bunker comprises the elevated bunker; the high-level storage bin is characterized by comprising a storage bin body and a discharging pipe arranged below the storage bin body; the two sides of the storage bin body are respectively provided with an air suction pipe, the first end of each air suction pipe is connected with the storage bin body, and the first end of each air suction pipe is air-permeable and impermeable to materials between the storage bin body and the storage bin body; the second end of each air suction pipe is communicated with the blanking pipe;
the feed opening of the feed pipe is communicated with the feed opening of the converter; in the converter blowing process, the generated high-temperature furnace gas enters a high-level storage bin to finish preheating.
2. The overhead bunker scrap adding system according to claim 1, wherein: a ring of annular channel is arranged outside the bin body, a plurality of air inlet holes are formed in the annular channel and on the outer wall of the bin body, and the first end of the air suction pipe is communicated with the annular channel; the high-temperature furnace gas sequentially passes through the air suction pipe, the annular channel and the air inlet hole from the blanking pipe to the interior of the storage bin body.
3. The overhead bunker scrap adding system according to claim 2, wherein: the aperture of the air inlet hole can be used for ventilation, but material particles cannot come out.
4. The overhead bunker scrap adding system according to claim 1, wherein: the top of the high-level bin is covered with a bin cover, and the bottom of the bin body is provided with a bin switch-on and switch-off valve for discharging.
5. The overhead bunker scrap adding system according to claim 1, wherein: and a fan is arranged on the side wall of the storage bin body and used for accelerating the air circulation of the inner cavity of the storage bin body.
6. The overhead bunker scrap adding system according to claim 1, wherein: the overhead bin is erected at a high position through a support.
7. The overhead bunker scrap adding system according to claim 6, wherein: two sides of the bin body are respectively provided with a fan, and the two fans are arranged oppositely.
8. The overhead bunker scrap adding system according to claim 1, wherein: the device also comprises an underground storage bin, a feeding trolley and a high-level feeding belt; the feeding trolley runs on a slope channel, the starting point of the slope channel is positioned below the underground storage bin, and the end point of the slope channel is positioned above the starting end of the high-position feeding belt; the tail end of the feeding belt is positioned above the high-level stock bin.
9. The overhead bunker scrap adding system according to claim 8, wherein: the tail end of the feeding belt is communicated with an inlet of a downward sliding channel pipe, and an inlet of the high-level bin is positioned below an outlet of the downward sliding channel pipe; and the waste steel material on the feeding belt is conveyed to the tail end and falls into the high-temperature storage bin through the lower sliding channel pipe.
10. The overhead bunker scrap adding system according to claim 8, wherein: a weighing hopper is arranged between the lower sliding channel pipe of the feeding belt and the high-level stock bin, and materials sequentially enter the high-level stock bin through the lower sliding channel pipe and the weighing hopper; the weighing hopper comprises a weighing hopper body and a hopper neck; the lower part of the hopper neck is communicated with a discharging slideway, and the discharging slideway is communicated with a discharging port of the hopper; the discharge port of the hopper is communicated with the high-level bin; and the hopper neck is provided with a vibrating screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120850389.4U CN214779271U (en) | 2021-04-24 | 2021-04-24 | High-order feed bin steel scrap adding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120850389.4U CN214779271U (en) | 2021-04-24 | 2021-04-24 | High-order feed bin steel scrap adding system |
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| CN214779271U true CN214779271U (en) | 2021-11-19 |
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| CN202120850389.4U Active CN214779271U (en) | 2021-04-24 | 2021-04-24 | High-order feed bin steel scrap adding system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114891945A (en) * | 2022-02-17 | 2022-08-12 | 阳春新钢铁有限责任公司 | Treatment method for reducing iron and steel material consumption and iron consumption final slag oxidizability of converter |
| WO2024021156A1 (en) * | 2022-07-29 | 2024-02-01 | 上海安可科技股份有限公司 | High-position feeding system and feeding method of converter |
-
2021
- 2021-04-24 CN CN202120850389.4U patent/CN214779271U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114891945A (en) * | 2022-02-17 | 2022-08-12 | 阳春新钢铁有限责任公司 | Treatment method for reducing iron and steel material consumption and iron consumption final slag oxidizability of converter |
| WO2024021156A1 (en) * | 2022-07-29 | 2024-02-01 | 上海安可科技股份有限公司 | High-position feeding system and feeding method of converter |
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