CN115717827A - Method for realizing quick furnace opening of side-blown molten pool smelting furnace - Google Patents
Method for realizing quick furnace opening of side-blown molten pool smelting furnace Download PDFInfo
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- CN115717827A CN115717827A CN202211508221.0A CN202211508221A CN115717827A CN 115717827 A CN115717827 A CN 115717827A CN 202211508221 A CN202211508221 A CN 202211508221A CN 115717827 A CN115717827 A CN 115717827A
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- furnace
- spray gun
- molten pool
- smelting furnace
- blown
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- 238000003723 Smelting Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 68
- 239000000446 fuel Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000000155 melt Substances 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000007664 blowing Methods 0.000 claims abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 17
- 239000001301 oxygen Substances 0.000 claims description 17
- 229910052760 oxygen Inorganic materials 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 abstract description 3
- 238000009751 slip forming Methods 0.000 abstract 1
- 239000002023 wood Substances 0.000 description 5
- 239000000571 coke Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a method for realizing quick furnace opening of a side-blown molten pool smelting furnace, which comprises the following steps: paving materials at the bottom of a smelting furnace in advance, adding inflammable matters to ignite to generate open fire, inserting a furnace drying spray gun into the smelting furnace from a furnace drying spray gun hole of the smelting furnace, arranging a plurality of side gun air ports at the lower part of the smelting furnace, inserting the side blowing spray gun into the smelting furnace before a melt liquid level rises to be close to the side gun air ports, and feeding fuel and combustion-supporting gas; and when the melt submerges the side-blown spray gun, the molten pool is successfully formed, the molten pool is continuously formed to expand the liquid level through the stirring of the side-blown spray gun, the furnace-baking spray gun is disassembled, the molten pool forming procedure is completed, and the production stage is started. The invention solves the problems of high furnace opening difficulty and difficult molten pool manufacturing of the side-blown molten pool smelting furnace, simplifies the molten pool manufacturing process, reduces the labor intensity, eliminates the possible factors of furnace opening failure and realizes a rapid and stable furnace opening mode.
Description
Technical Field
The invention relates to the field of metal smelting, in particular to a method for realizing quick furnace opening of a side-blown molten pool smelting furnace.
Background
A side-blown molten pool smelting furnace is an advanced nonferrous metallurgy furnace, when the side-blown molten pool smelting furnace is opened to build a molten pool, the traditional mode is that firstly, wood splitting is added into the furnace and the wood splitting is ignited, then coke is added quickly to fill gaps of the wood splitting, then materials are added to form a material seal at the top, oxygen-enriched air or air is blown from spray gun holes at two sides synchronously to support wood splitting and coke combustion, the top materials are gradually melted to build the molten pool in the combustion process, the side-blown smelting conditions are met after the spray gun is immersed in the molten pool, production can be started, the whole molten pool building process is nervous in organization, the workload of feeding personnel is large, the wood splitting and coke consumption is large, the combustion speed is difficult to control, the molten pool building failure is easily caused, and the furnace cannot be opened.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for realizing quick furnace opening of a side-blown molten pool smelting furnace aiming at the defects and shortcomings of the prior art. The current situations that the side-blown molten pool smelting furnace is difficult to open and the molten pool is difficult to manufacture are solved.
In order to achieve the aim, the invention provides a method for realizing quick furnace opening of a side-blown molten pool smelting furnace, which is characterized by comprising the following steps: the method comprises the following steps: paving materials at the bottom of a smelting furnace in advance, adding inflammable substances to ignite to generate open fire, arranging a plurality of baking furnace spray gun holes in the upper circumferential direction of the smelting furnace, inserting baking furnace spray guns into the smelting furnace from the baking furnace spray gun holes of the smelting furnace, feeding fuel and oxygen-enriched air to ignite, melting the materials through the high temperature of the burning of the baking furnace spray guns to form a molten pool, and continuously adding the materials to expand the liquid level of the melt; the lower part of the smelting furnace is provided with a plurality of side gun air ports, the side gun air ports are dredged before the melt liquid level rises to be close to the side gun air ports, side blowing spray guns are inserted and fuel and combustion-supporting gas are fed, the air ports are prevented from being immersed by the liquid level, heat is provided at the same time, and the material melting speed is accelerated; when the side-blown spray gun is immersed in the melt, the molten pool is successfully manufactured, the side-blown spray gun is stirred to continue to manufacture the liquid level of the molten pool, the furnace-baking spray gun is removed, the molten pool manufacturing procedure is completed, and the production stage is started; and when the slag surface rises to a height close to the side-blowing spray gun, starting to add a concentrate matte surface, wherein the bottom of the smelting furnace is provided with a hearth, and the height of the matte surface cannot exceed the hearth.
In the technical scheme of the method for realizing the quick furnace opening of the side-blown molten pool smelting furnace, the further preferable technical scheme is characterized in that:
1. the fuel is gas fuel or powder fuel;
2. the gas fuel is natural gas, and the powder fuel is pulverized coal;
3. the side lance tuyere is provided with a plurality of smelting furnaces which are arranged between the hearth and the lance holes of the oven side by side, and the side lance tuyere is arranged at one side close to the hearth;
4. the drying furnace spray gun is an arc spray gun, a fuel inlet and an oxygen-enriched air inlet are arranged at the inlet end of the arc spray gun, and a fuel outlet and an oxygen-enriched air outlet are arranged at the outlet end of the arc spray gun;
5. an inner bushing arranged along the length direction of the arc-shaped spray gun is arranged inside the arc-shaped spray gun, an inner channel is arranged inside the inner bushing, one end of the inner channel is connected with an oxygen-enriched air inlet, and the other end of the inner channel is connected with an oxygen-enriched air outlet;
6. an outer channel is arranged between the outer wall of the inner lining and the inner wall of the arc-shaped spray gun, one end of the outer channel is connected with the fuel inlet, and the other end of the outer channel is connected with the fuel outlet.
Compared with the prior art, the method solves the problems of high furnace opening difficulty and difficult molten pool manufacturing of the side-blown molten pool smelting furnace, simplifies the molten pool manufacturing process, reduces the labor intensity, eliminates possible factors of furnace opening failure, and realizes a rapid and stable furnace opening mode.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the description of the embodiments or the prior art will be briefly introduced 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 view of the construction of a melting furnace according to the present invention;
FIG. 2 is a schematic view of the construction of a lance of the oven.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 6. In the method for realizing the rapid furnace opening of the side-blown molten pool smelting furnace according to any one of examples 1 to 5, an inner bushing is arranged inside the arc-shaped lance along the length direction of the arc-shaped lance, an inner passage 9 is arranged inside the inner bushing, one end of the inner passage is connected with an oxygen-enriched air inlet 11, and the other end of the inner passage is connected with an oxygen-enriched air outlet.
Example 7. In a method for performing a rapid tap-in of a side-blown molten bath smelting furnace according to any one of examples 1 to 6, an outer passage 10 is provided between an outer wall of the inner bushing and an inner wall of the arc lance, one end of the outer passage is connected to a fuel inlet 12, and the other end of the outer passage is connected to a fuel outlet.
The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept thereof within the scope of the present invention.
Claims (7)
1. A method for realizing quick furnace opening of a side-blown molten pool smelting furnace is characterized by comprising the following steps: laying materials at the bottom of a smelting furnace in advance, adding inflammable matters to ignite to generate open fire, arranging a plurality of baking furnace spray gun holes in the upper circumferential direction of the smelting furnace, inserting baking furnace spray guns into the smelting furnace from the baking furnace spray gun holes of the smelting furnace, feeding fuel and oxygen-enriched air to ignite, melting the materials through the high temperature of the burning of the baking furnace spray guns to form a molten pool, and continuously adding the materials to expand the liquid level of the molten body; the lower part of the smelting furnace is provided with a plurality of side gun air ports, the side gun air ports are dredged before the melt liquid level rises to be close to the side gun air ports, a side blowing spray gun is inserted and fuel and combustion-supporting gas are fed, the liquid level is prevented from submerging the air ports, heat is provided at the same time, and the material melting speed is accelerated; when the side-blown spray gun is immersed in the melt, the molten pool is successfully formed, the side-blown spray gun is stirred to continue to form the liquid level of the molten pool, the furnace-baking spray gun is disassembled, the molten pool forming procedure is completed, and the production stage is started; and when the slag surface rises to a height close to the side-blowing spray gun, adding concentrate for making a matte surface, wherein a hearth is arranged at the bottom of the smelting furnace, and the height of the matte surface cannot exceed the hearth.
2. The method for realizing the quick furnace opening of the side-blown molten pool smelting furnace according to the claim 1, which is characterized in that: the fuel is gas fuel or powder fuel.
3. The method for realizing the quick furnace opening of the side-blown molten pool smelting furnace according to the claim 2, characterized in that: the gas fuel is natural gas, and the powder fuel is pulverized coal.
4. The method for realizing the quick furnace opening of the side-blown molten pool smelting furnace according to the claim 1, which is characterized in that: the side lance tuyere is provided with a plurality of smelting furnaces which are arranged between the hearth and the lance holes of the oven side by side, and the side lance tuyere is arranged at one side close to the hearth.
5. The method for realizing the quick furnace opening of the side-blown molten pool smelting furnace according to the claim 1, which is characterized in that: the drying furnace spray gun is an arc-shaped spray gun, a fuel inlet and an oxygen-enriched air inlet are arranged at the inlet end of the arc-shaped spray gun, and a fuel outlet and an oxygen-enriched air outlet are arranged at the outlet end of the arc-shaped spray gun.
6. The method for realizing the quick furnace opening of the side-blown molten pool smelting furnace according to the claim 5, characterized in that: an inner bushing arranged along the length direction of the arc-shaped spray gun is arranged in the arc-shaped spray gun, an inner channel is arranged in the inner bushing, one end of the inner channel is connected with an oxygen-enriched air inlet, and the other end of the inner channel is connected with an oxygen-enriched air outlet.
7. The method for realizing the quick furnace opening of the side-blown molten pool smelting furnace according to the claim 5, characterized in that: an outer channel is arranged between the outer wall of the inner lining and the inner wall of the arc-shaped spray gun, one end of the outer channel is connected with the fuel inlet, and the other end of the outer channel is connected with the fuel outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211508221.0A CN115717827A (en) | 2022-11-29 | 2022-11-29 | Method for realizing quick furnace opening of side-blown molten pool smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211508221.0A CN115717827A (en) | 2022-11-29 | 2022-11-29 | Method for realizing quick furnace opening of side-blown molten pool smelting furnace |
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| Publication Number | Publication Date |
|---|---|
| CN115717827A true CN115717827A (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211508221.0A Pending CN115717827A (en) | 2022-11-29 | 2022-11-29 | Method for realizing quick furnace opening of side-blown molten pool smelting furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116926337A (en) * | 2023-09-15 | 2023-10-24 | 内蒙古兴安银铅冶炼有限公司 | Cold material input process of side-blowing reduction furnace |
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2022
- 2022-11-29 CN CN202211508221.0A patent/CN115717827A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116926337A (en) * | 2023-09-15 | 2023-10-24 | 内蒙古兴安银铅冶炼有限公司 | Cold material input process of side-blowing reduction furnace |
| CN116926337B (en) * | 2023-09-15 | 2023-11-24 | 内蒙古兴安银铅冶炼有限公司 | Cold material input process of side-blowing reduction furnace |
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Effective date of registration: 20240415 Address after: 737104 No. 2 Lanzhou Road, Beijing Road Street, Jinchuan District, Jinchang City, Gansu Province Applicant after: Jinchuan Group Nickel Cobalt Co.,Ltd. Country or region after: China Address before: 737100 Beijing Road, Jinchang City, Gansu Province Applicant before: JINCHUAN GROUP Co.,Ltd. Country or region before: China |