CN107560444B - Device and method for collecting flue gas and dust generated by unshelling of electric smelting magnesium - Google Patents
Device and method for collecting flue gas and dust generated by unshelling of electric smelting magnesium Download PDFInfo
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- CN107560444B CN107560444B CN201710851453.9A CN201710851453A CN107560444B CN 107560444 B CN107560444 B CN 107560444B CN 201710851453 A CN201710851453 A CN 201710851453A CN 107560444 B CN107560444 B CN 107560444B
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Abstract
The invention relates to a collecting device for flue gas and dust of electric smelting magnesium shelling, which is hung above an electric smelting magnesium smelting furnace, wherein the bottom of the collecting device is always in airtight contact with the ground in the electric smelting magnesium shelling process; the collecting device comprises a suspended telescopic dust hood, the telescopic dust hood is connected with a smoke dust collecting system through a flexible connecting pipe, the telescopic dust hood comprises a top plate, a telescopic hood body, a bottom beam and an electric telescopic system, the top plate is connected with the telescopic hood body in a sealing mode, a multi-layer supporting steel ring is arranged in the telescopic hood body, the bottom beam is arranged at the bottom edge of the telescopic hood body, the electric telescopic system is connected with the bottom beam, and the telescopic hood body is driven by the electric telescopic system to realize telescopic operation. The invention relates to a movable and telescopic dust collecting device, which changes the telescopic function of a starting dust collecting cover along with the change of the height of a furnace body in the process of unshelling fused magnesia fused weight, and the top of the telescopic dust collecting cover and the top of the furnace body realize synchronous lifting, and the bottom of the telescopic dust collecting cover is always sealed with the ground, so that the smoke dust is collected to the greatest extent.
Description
Technical Field
The invention relates to the field of treatment of flue gas and dust, in particular to a device for collecting flue gas and dust from electric smelting magnesium unshelling.
Background
Fused magnesia, also known as fused magnesia, is a good alkaline refractory material. The electric smelting magnesite is prepared by using carefully selected special grade A natural magnesite or high-purity light burned magnesium particles, or treating concentrate powder obtained by floatation and purification of low-grade magnesite, and then melting in an electric arc furnace. The product has high purity, large crystal grain, compact structure, strong slag resistance and good thermal shock stability, is an excellent high-temperature electric insulation material, and is also an important raw material for manufacturing high-grade magnesia bricks, magnesia carbon bricks and unshaped refractory materials. A large amount of flue gas and dust are generated in the production of the fused magnesia, and the process of unshelling the fused weight of the fused magnesia electric arc furnace generates a large amount of flue gas and dust, and the current majority is the emission of an inorganization.
The method for treating fume and dust includes suspending dust hood over electric arc furnace and feeding the dust hood to dust collector with blower. In the other, a plurality of ventilation openings are formed in a workshop, and the smoke dust remover is treated by an induced draft fan. The method has poor treatment effect and low dust removal efficiency, and can not reach the national standard.
Disclosure of Invention
The invention aims to solve the technical problem of providing a collecting device for flue gas and dust in the process of unshelling fused magnesia, which is used for preventing and controlling the pollution of the flue gas and dust to the ecological environment in the process of producing fused magnesia, solving the problems that the smoke dust is difficult to control, the smoke dust overflows and the dust is difficult to collect in the process of unshelling fused magnesia, and the pollution cannot be effectively treated.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the device is suspended above the electric smelting magnesium smelting furnace, and the bottom of the device is always in airtight contact with the ground in the electric smelting magnesium shelling process; the collecting device comprises a suspended telescopic dust hood, the telescopic dust hood is connected with a smoke dust collecting system through a flexible connecting pipe, the telescopic dust hood comprises a top plate, a telescopic hood body, a bottom beam and an electric telescopic system, the top plate is connected with the telescopic hood body in a sealing mode, a multi-layer supporting steel ring is arranged in the telescopic hood body, the bottom beam is arranged at the bottom edge of the telescopic hood body, the electric telescopic system is connected with the bottom beam, and the telescopic hood body is driven by the electric telescopic system to realize telescopic operation.
The electric telescopic system comprises a direct current power supply, an inverter, a motor, a winch, a steering pulley and a fixed pulley which are fixed on a top plate, wherein the direct current power supply is sequentially connected with the inverter, the motor and the winch, two groups of steel wires are wound on the winch, the two groups of steel wires are reversely led out, each group of steel wires is a plurality of steel wires, each steel wire stretches into a telescopic cover body after being wound by the steering pulley and the fixed pulley, and passes through a supporting steel ring on the telescopic cover body to be fixedly connected with a bottom beam.
The smoke dust collecting system comprises a smoke dust collecting pipeline, a fan and a dust remover which are connected in sequence.
The electric telescopic system is controlled by a remote controller.
The upper part of the telescopic cover body is provided with a smoke outlet.
The telescopic cover body is made of heat-resistant fireproof cloth.
The lifting ring is arranged on the top plate, and the lifting hook is arranged below the top plate.
The method for collecting the flue gas dust from the unshelling of the electric smelting magnesium comprises the following specific steps:
1) Before the electric smelting magnesium is unshelling, a crane hook is hung on a hanging ring on the top plate of the telescopic dust hood, and a smoke outlet of the telescopic dust hood is connected with a smoke collecting system through a flexible connecting pipe;
2) Starting an electric telescopic system of the telescopic dust hood, and retracting the telescopic hood body to the minimum limit;
3) Hanging the furnace shell on a lifting hook below the top plate, starting an electric telescopic system to extend the telescopic cover body until a bottom beam of the telescopic cover body falls to the ground;
4) Lifting by a crane, lifting the furnace shell, starting an electric telescopic system, enabling the telescopic cover body to extend continuously until the furnace shell is completely separated from the magnesia fused weight, sealing the bottom beam of the telescopic cover body with the ground all the time, and completely conveying flue gas and dust generated in the shelling process into a dust collecting system;
5) After the smoke dust is collected, the electric telescopic system is started to enable the telescopic hood body to be contracted to the minimum limit, and then the telescopic dust hood and the furnace shell are removed together.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a movable and telescopic dust collecting device, which changes the telescopic function of a starting dust collecting cover along with the change of the height of a furnace body in the process of unshelling fused magnesia fused weight, and the top of the telescopic dust collecting cover and the top of the furnace body realize synchronous lifting, and the bottom of the telescopic dust collecting cover is always sealed with the ground, so that the smoke dust is collected to the greatest extent. The dust collecting device solves the problems that the fixed dust collecting cover cannot be changed with the height change of the furnace body, and when the fused lump cannot be unshelling, the smoke dust discharged from the lower part of the furnace body is recovered and treated. Thoroughly eliminates dust pollution, and has the characteristics of simple structure, easy implementation and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a top plan view of the telescoping shield.
In the figure: the device comprises a telescopic dust collection cover 1, a smoke collection pipeline 2, a fan 3, a dust remover 4, a flexible connecting pipe 5, a top plate 6, a bottom beam 7, a telescopic cover body 8, a hanging ring 9, a lifting hook 10, a direct current power supply 11, an inverter 12, a motor 13, a winch control box 14, a winch drum 15, a steel wire 16, a fixed pulley 17, a steering pulley 18, a crane lifting hook 19, a supporting steel ring 20, a magnesia melting weight 21 and a furnace shell 22.
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
1-2, a collecting device for electric smelting magnesium unshelling flue gas and dust comprises a suspended telescopic dust hood 1, wherein the telescopic dust hood 1 is sequentially connected with a flue gas collecting pipeline 2, a fan 3 and a dust remover 4 through a flexible connecting pipe 5.
The telescopic dust hood 1 comprises a top plate 6, a telescopic hood body 8, a bottom beam 7 and an electric telescopic system, wherein a hanging ring 9 is arranged on the top plate 6 and used for hanging a crane hook 19, and a hanging hook 10 is arranged on the lower surface of the top plate 6 and used for hanging a furnace shell 22.
The top plate 6 is connected with the telescopic cover body 8 in a sealing way, the telescopic cover body 8 is made of heat-resistant fireproof cloth, and a smoke outlet for connecting the flexible connecting pipe 5 is arranged at the upper part of the telescopic cover body 8. The inside of the telescopic cover body 8 is provided with a plurality of layers of supporting steel rings 20, and the bottom edge of the telescopic cover body 8 is provided with a bottom beam 7.
The electric telescopic system comprises a direct current power supply 11, an inverter 12, a motor 13, a winch 15, a steering pulley 18 and a fixed pulley 17 which are fixed on a top plate 6, wherein the direct current power supply 11 is sequentially connected with the inverter 12, the motor 13, a winch control box 14 and a winch drum 15, two groups of steel wires are wound on the winch drum 15, the two groups of steel wires are led out reversely, each group of steel wires is a plurality of steel wires 16, each steel wire 16 stretches into a telescopic cover body 8 after being wound by the steering pulley 18 and the fixed pulley 17, and passes through each supporting steel ring 20 on the telescopic cover body 8 to be fixedly connected with a bottom beam 7. The telescopic cover body 8 is driven by an electric telescopic system to realize telescopic operation. The electric telescopic system is controlled by a remote controller.
When the fused magnesia fused weight is unshelling, the telescopic dust hood 1 is suspended above the furnace body, the bottom beam 7 of the telescopic dust hood 1 hangs on the ground, the electric telescopic system of the telescopic dust hood 1 is started to extend the hood body while the electric arc furnace shell 14 is lifted, so that the bottom beam 7 is always in airtight contact with the ground, and all smoke dust is ensured to be sent into the dust remover.
Examples
The utility model provides a collection device of electric smelting magnesium shelling flue gas dust, includes flexible dust cage 1 that hangs, and flexible dust cage 1's exhaust port passes through hose 5 to be connected with smoke and dust collecting pipeline 2, fan 3, dust remover 4 in proper order.
The telescopic dust hood 1 comprises a top plate 6, a telescopic hood body 8, a bottom beam 7 and an electric telescopic system, wherein a hanging ring 9 is arranged in the center of the upper surface of the top plate 6 and used for hanging a crane hook 19, and 4 hooks 10 are arranged on the lower surface of the top plate 6 and used for hooking a furnace shell 22.
The top plate 6 is connected with the telescopic cover body 8 in a sealing way, the telescopic cover body 8 is made of heat-resistant fireproof cloth, and a smoke outlet for connecting the flexible connecting pipe 5 is arranged at the upper part of the telescopic cover body 8. The inside of the telescopic cover body 8 is provided with a plurality of layers of supporting steel rings 20, and the bottom edge of the telescopic cover body 8 is provided with a bottom beam 7.
The electric telescopic system comprises a direct current power supply 11, an inverter 12, a motor 13, a winch 15, a steering pulley 18 and a fixed pulley 17 which are fixed on a top plate 6, wherein the direct current power supply 11 is sequentially connected with the inverter 12, the motor 13, a winch control box 14 and a winch drum 15, two groups of steel wires are wound on the winch drum 15, the two groups of steel wires are led out reversely, each group of steel wires is 2 steel wires 16, each steel wire 16 stretches into a telescopic cover body 8 after being wound by the steering pulley 18 and the fixed pulley 17, the fixed pulleys 17 are arranged on four corners of the top plate, and the steel wires 16 penetrate through each supporting steel ring 20 on the telescopic cover body 8 to be fixedly connected with a bottom beam 7. The telescopic cover body 8 is driven by an electric telescopic system to realize telescopic operation. The electric telescopic system is controlled by a remote controller.
The method for collecting the flue gas dust from the unshelling of the electric smelting magnesium comprises the following specific steps:
1) Before the electric smelting magnesium is unshelling, a crane hook 19 is hung on a hanging ring 9 on a top plate 6 of the telescopic dust hood 1, and a smoke outlet of the telescopic dust hood 1 is connected with a smoke collecting system through a flexible connecting pipe 5;
2) Starting an electric telescopic system of the telescopic dust hood 1, and retracting the telescopic hood body 8 to the minimum limit;
3) Hanging the furnace shell 22 on the hanging hook 10 on the lower surface of the top plate 6, starting the electric telescopic system to extend the telescopic cover body 8 until the bottom beam 7 of the telescopic cover body 8 falls to the ground;
4) Lifting by a crane, starting an electric telescopic system while lifting the furnace shell 22, enabling the telescopic cover body 8 to extend continuously until the furnace shell 22 is completely separated from the magnesia fused weight 21, sealing the bottom beam 7 of the telescopic cover body 8 with the ground all the time, and completely conveying flue gas and dust generated in the shelling process into a dust collecting system;
5) After the fume is collected, the electric telescopic system is started to retract the telescopic hood body 8 to the minimum limit, and then the telescopic dust hood 1 and the furnace shell 22 are removed together.
The above description is only of the basic principle of the invention, and is not limited in any way, and all equivalent changes and modifications according to the invention are within the scope of the technical protection scheme of the patent.
Claims (7)
1. The collecting device for the flue gas and dust generated by unshelling of the electric smelting magnesium is characterized in that the collecting device is suspended above an electric smelting magnesium smelting furnace, and the bottom of the collecting device is always in airtight contact with the ground in the unshelling process of the electric smelting magnesium; the collecting device comprises a suspended telescopic dust hood, the telescopic dust hood is connected with a smoke dust collecting system through a flexible connecting pipe, the telescopic dust hood comprises a top plate, a telescopic hood body, a bottom beam and an electric telescopic system, the top plate is in closed connection with the telescopic hood body, a plurality of layers of supporting steel rings are arranged in the telescopic hood body, the bottom beam is arranged at the bottom edge of the telescopic hood body, the electric telescopic system is connected with the bottom beam, and the telescopic hood body is driven by the electric telescopic system to realize telescopic operation; the collecting method of the collecting device comprises the following specific steps:
1) Before the electric smelting magnesium is unshelling, a crane hook is hung on a hanging ring on the top plate of the telescopic dust hood, and a smoke outlet of the telescopic dust hood is connected with a smoke collecting system through a flexible connecting pipe;
2) Starting an electric telescopic system of the telescopic dust hood, and retracting the telescopic hood body to the minimum limit;
3) Hanging the furnace shell on a lifting hook below the top plate, starting an electric telescopic system to extend the telescopic cover body until a bottom beam of the telescopic cover body falls to the ground;
4) Lifting by a crane, lifting the furnace shell, starting an electric telescopic system, enabling the telescopic cover body to extend continuously until the furnace shell is completely separated from the magnesia fused weight, sealing the bottom beam of the telescopic cover body with the ground all the time, and completely conveying flue gas and dust generated in the shelling process into a dust collecting system;
5) After the smoke dust is collected, the electric telescopic system is started to enable the telescopic hood body to be contracted to the minimum limit, and then the telescopic dust hood and the furnace shell are removed together.
2. The electric fused magnesium unshelling flue gas dust collecting device according to claim 1, wherein the electric telescopic system comprises a direct current power supply, an inverter, a motor, a winch, a steering pulley and a fixed pulley which are fixed on a top plate, the direct current power supply is sequentially connected with the inverter, the motor and the winch, two groups of steel wires are wound on the winch, the two groups of steel wires are led out reversely, each group of steel wires is a plurality of steel wires, each steel wire extends into a telescopic cover body after being wound by the steering pulley and the fixed pulley, and the steel wires penetrate through a supporting steel ring on the telescopic cover body and are fixedly connected with a bottom beam.
3. The collecting device for electric smelting magnesium unshelling flue gas and dust according to claim 1, wherein the flue gas collecting system comprises a flue gas collecting pipeline, a fan and a dust remover which are connected in sequence.
4. The device for collecting flue gas and dust from the unshelling of fused magnesium according to claim 1, wherein the electric telescopic system is controlled by a remote controller.
5. The device for collecting flue gas and dust from electric smelting magnesium shelling according to claim 1, wherein the upper part of the telescopic hood body is provided with a smoke outlet.
6. The collecting device for electric smelting magnesium unshelling flue gas dust according to claim 1, wherein the telescopic cover body is a temperature-resistant fireproof cloth.
7. The device for collecting flue gas and dust from electric smelting magnesium shelling according to claim 1, wherein the top plate is provided with a hanging ring, and the bottom of the top plate is provided with a hanging hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710851453.9A CN107560444B (en) | 2017-09-20 | 2017-09-20 | Device and method for collecting flue gas and dust generated by unshelling of electric smelting magnesium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710851453.9A CN107560444B (en) | 2017-09-20 | 2017-09-20 | Device and method for collecting flue gas and dust generated by unshelling of electric smelting magnesium |
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| CN107560444B true CN107560444B (en) | 2023-08-29 |
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| CN111215419A (en) * | 2018-11-23 | 2020-06-02 | 李林山 | Fused magnesia fused lump cleaning barrel lifting device and use method |
| CN110207501A (en) * | 2019-07-03 | 2019-09-06 | 嘉峪关索通预焙阳极有限公司 | Prebaked anode system of solutions sink block dust arrester installation |
| CN110440610A (en) * | 2019-08-15 | 2019-11-12 | 夏颖 | A kind of depositing dust high efficiency metallurgy electric arc furnaces |
| CN113252725B (en) * | 2021-06-25 | 2022-03-29 | 胡丽萍 | Be used for new forms of energy spare part heat conductivity detection device |
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| JP2002156191A (en) * | 2000-11-20 | 2002-05-31 | Sumitomo Heavy Ind Ltd | Dust collecting equipment for ladle |
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