CN220418124U - Novel blast furnace - Google Patents
Novel blast furnace Download PDFInfo
- Publication number
- CN220418124U CN220418124U CN202321844122.XU CN202321844122U CN220418124U CN 220418124 U CN220418124 U CN 220418124U CN 202321844122 U CN202321844122 U CN 202321844122U CN 220418124 U CN220418124 U CN 220418124U
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- CN
- China
- Prior art keywords
- pipe
- furnace
- dispersing
- smelting
- smelting furnace
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- 238000003723 Smelting Methods 0.000 claims abstract description 65
- 239000006185 dispersion Substances 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 13
- 239000000428 dust Substances 0.000 abstract description 26
- 239000000779 smoke Substances 0.000 abstract description 19
- 239000007789 gas Substances 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 4
- 238000005054 agglomeration Methods 0.000 abstract description 3
- 230000002776 aggregation Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 239000002918 waste heat Substances 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 12
- 239000003546 flue gas Substances 0.000 description 12
- 239000000446 fuel Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000004482 other powder Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- YPMOSINXXHVZIL-UHFFFAOYSA-N sulfanylideneantimony Chemical compound [Sb]=S YPMOSINXXHVZIL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a novel blast furnace, belongs to the field of metallurgical equipment, and solves the problems that smoke dust is required to be smelted in the blast furnace after agglomeration, so that the smelting cost is high and the waste heat of the smoke dust cannot be effectively utilized. The utility model comprises a smelting furnace, a U-shaped dispersing pipe and a recycling cyclone; a plurality of tuyeres are arranged on two sides of the smelting furnace; the U-shaped dispersing pipe is arranged around the smelting furnace, the U-shaped dispersing pipe is connected with a dispersing gas inlet, two side pipelines of the U-shaped dispersing pipe are connected with a plurality of dispersing branch pipes, and the dispersing branch pipes are connected with the air nozzles in a one-to-one correspondence manner; the top of the recirculation cyclone is provided with an exhaust gas outlet, the upper part of the recirculation cyclone is connected with the smelting furnace through a connecting pipeline, and the bottom of the recirculation cyclone is connected with a dispersion gas inlet through a circulating pipe. The smoke dust does not need to be agglomerated to directly participate in smelting, so that the traditional processes of dust piling, agglomeration, conveying and the like in blast furnace smelting are omitted, and the cost is reduced; the hot smoke and dust directly enters the furnace, and the latent heat of the smoke and dust is effectively utilized.
Description
Technical Field
The utility model belongs to the field of metallurgical equipment, and particularly relates to a novel blast furnace.
Background
The blast furnace is a metallurgical device with vertical operation space, and is widely applied to the fields of metal smelting such as lead-zinc bulk concentrate, antimony sulfide ore and the like which are difficult to separate, comprehensive utilization of resources and the like. The blast furnace is a melting furnace with a charging post type melting pool, and in order to ensure the smooth proceeding of the melting process, the furnace burden in the furnace should have good air permeability, and the furnace burden and the fuel are added into the furnace in a block shape to form a charging post.
The dust rate of blast furnace smelting is 5% -10%, dust-containing flue gas produced in the existing blast furnace production process is collected by a flue gas purification system, and the flue gas is agglomerated and then returned to the furnace for smelting, so that the investment cost is high, the smelting cost is high, and the waste heat of the flue gas cannot be effectively utilized.
Disclosure of Invention
The utility model aims to provide a novel blast furnace so as to solve the problems that smoke dust is required to be agglomerated and then returned into the blast furnace for smelting, so that the smelting cost is high and the waste heat of the smoke dust cannot be effectively utilized.
The technical scheme of the utility model is as follows: a novel blast furnace, which comprises a smelting furnace, a U-shaped dispersing pipe and a recirculation cyclone; a plurality of tuyeres are arranged on two sides of the smelting furnace; the U-shaped dispersing pipe is arranged around the smelting furnace, the U-shaped dispersing pipe is connected with a dispersing gas inlet, two side pipelines of the U-shaped dispersing pipe are connected with a plurality of dispersing branch pipes, and the dispersing branch pipes are connected with the air nozzles in a one-to-one correspondence manner; the top of the recirculation cyclone is provided with an exhaust gas outlet, the upper part of the recirculation cyclone is connected with the smelting furnace through a connecting pipeline, and the bottom of the recirculation cyclone is connected with a dispersion gas inlet through a circulating pipe.
As a further improvement of the utility model, the smelting furnace also comprises an annular blast enclosure pipe, wherein the annular blast enclosure pipe is arranged around the smelting furnace, the annular blast enclosure pipe is connected with an air inlet, a plurality of blast branch pipes are arranged at the positions of the annular blast enclosure pipe, which are positioned at the two sides of the smelting furnace, and the blast branch pipes are connected with the blast nozzles in a one-to-one correspondence manner.
As a further improvement of the utility model, the device also comprises a powder bin which is connected with the dispersing gas inlet through a feeding pipe.
The beneficial effects of the utility model are as follows:
1. according to the utility model, dust-containing flue gas generated by a smelting furnace is introduced into the recirculation cyclone, and after the dust-containing flue gas is subjected to gas-solid separation by the recirculation cyclone, hot smoke flows out from the bottom of the recirculation cyclone, enters the U-shaped dispersing pipe, enters the smelting furnace from each tuyere, and is re-smelted, so that the traditional processes of stacking, agglomeration, conveying and the like of the smelting smoke of the blast furnace are omitted, and the smelting cost is further reduced. In addition, the hot smoke dust is directly connected into the furnace, so that the latent heat of the smoke dust is effectively utilized, and the smelting energy consumption after the smoke dust is agglomerated is reduced.
2. The utility model combines the annular blowing enclosing pipe for blowing with the U-shaped dispersing pipe and the tuyere, and the blowing branch pipe and the dispersing branch pipe are connected on the tuyere together, and the smoke dust and the air are blown into the smelting furnace together after being mixed in the tuyere, thereby improving the smelting efficiency.
3. The tuyere of the utility model is distributed around the smelting furnace, so that air uniformly enters the smelting furnace, and the blasting effect is good.
4. The utility model is provided with the powder bin, can process other similar powder, and has wider application range.
5. The utility model has simple structure, can be modified on the technology of the existing blast furnace system, and has strong practicability.
6. The utility model is easy to implement, the smoke dust is directly blown into the melt in the furnace through the tuyere, the particle size of the blast furnace smoke dust is mostly about 200 meshes, and the violent reaction occurs in the melt, so that the reaction speed is high, the smelting time can be effectively shortened, and the production capacity of the smelting furnace is improved.
Drawings
FIG. 1 is a schematic diagram of a shaft side structure of a novel blast furnace of the present utility model;
FIG. 2 is a schematic diagram of a front view of a novel blast furnace according to the present utility model;
FIG. 3 is a right side view of FIG. 1;
fig. 4 is a schematic top view of a novel blast furnace according to the present utility model.
In the figure: 1-a smelting furnace; 2-connecting pipelines; 3-recirculating cyclone; 31-a circulation pipe; 32-an exhaust gas outlet; 4-U-shaped dispersing tube; 41-dispersing branch pipes; 42-dispersion gas inlet; 5-tuyere; 6, a molten liquid chute; 7-an annular blower enclosure; 71-a blast branch pipe; 72-air inlet; 8-a powder bin; 81-feeding pipe; 9-a charging port.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-4, the novel blast furnace comprises a smelting furnace 1, wherein a charging hole 9 is arranged at the top of the smelting furnace 1, a molten liquid chute 6 is arranged at the side part of the smelting furnace 1, and the novel blast furnace further comprises a U-shaped dispersing pipe 4 and a recirculation cyclone cylinder 3; a plurality of tuyeres 5 are arranged on two sides of the smelting furnace 1; the U-shaped dispersing pipe 4 is arranged around the smelting furnace 1, a dispersing gas inlet 42 is connected to the middle transverse pipe of the U-shaped dispersing pipe 4, a plurality of dispersing branch pipes 41 are connected to the two side pipelines of the U-shaped dispersing pipe 4, and the dispersing branch pipes 41 are connected with the air nozzles 5 in a one-to-one correspondence manner; the top of the recirculation cyclone cylinder 3 is provided with an exhaust gas outlet 32, the upper part of the recirculation cyclone cylinder 3 is connected with the top of the smelting furnace 1 through a connecting pipeline 2, and the bottom of the recirculation cyclone cylinder 3 is connected with a dispersion gas inlet 42 through a circulating pipe 31.
The smelting furnace further comprises an annular blast enclosure pipe 7, the annular blast enclosure pipe 7 is arranged around the smelting furnace 1, the annular blast enclosure pipe 7 is connected with an air inlet 72, a plurality of blast branch pipes 71 are arranged at positions, located on two sides of the smelting furnace 1, of the annular blast enclosure pipe 7, and the blast branch pipes 71 are connected with the tuyeres 5 in a one-to-one correspondence mode.
And further comprises a powder bin 8, wherein the powder bin 8 is connected with the dispersing gas inlet 42 through a feeding pipe 81.
The using method is as follows:
A. charging materials and fuel are added into the smelting furnace 1 through a charging hole 9;
B. air (or oxygen-enriched air) is introduced into the annular blast enclosure pipe 7 through the air inlet 72, and enters the tuyeres 5 through the blast branch pipes 71 to blast the smelting furnace 1 for smelting;
C. dust-containing flue gas generated in the smelting furnace 1 enters the recirculation cyclone cylinder 3 through the connecting pipeline 2;
D. dust-containing flue gas is subjected to solid-gas separation in the recirculation cyclone cylinder 3, the flue gas is discharged through the exhaust gas outlet 32, smoke dust enters the U-shaped dispersing pipe 4 through the circulating pipe 31 and the dispersing gas inlet 42, then enters the tuyere 5 through each dispersing branch pipe 41, is mixed with air in the tuyere 5, and enters the smelting furnace 1 to participate in smelting.
When powder is required to be added, the powder is stored in the powder bin 8, enters the U-shaped dispersing pipe 4 through the feeding pipe 81 and the dispersing gas inlet 42, and then enters the smelting furnace 1 through the dispersing branch pipes 41 and the tuyere 5.
The circulation pipe 31, the feed pipe 81, the dispersing branch pipe 41 and the blast branch pipe 71 are provided with regulating valves.
The tuyere 5 is installed at the two sides of the smelting furnace 1 in a downward inclined way, and the installation inclination angle of the tuyere 5 is 3-15 degrees.
Bulk material and fuel are fed in batches from a feed port 9 at the top of the smelting furnace 1 to form a column. Air for fuel combustion (or oxygen-enriched air) is blown into the smelting furnace 1 through the air inlet 72 of the annular blast shroud pipe 7, and through the blast branch pipes 71 and the tuyeres 5 provided on both sides of the lower portion of the smelting furnace 1. The fuel is heated in the smelting furnace 1, provides the atmosphere (oxidation or reduction) required for smelting in the smelting furnace 1, and provides the heat of reaction. The furnace burden continuously carries out chemical reaction in the furnace, molten liquid produced by the reaction is discharged through a molten liquid chute 6 at regular intervals, produced high-temperature flue gas rises along a gap between the furnace burden and fuel, and dust-containing flue gas enters a recirculation cyclone cylinder 3 along a tangential direction through a connecting pipeline 2 communicated with the smelting furnace 1. The dust-containing flue gas is subjected to gas-solid separation through the recirculation cyclone cylinder 3, and hot waste gas is discharged from a waste gas outlet 32 at the top of the recirculation cyclone cylinder 3 and enters a matched waste gas purifying system; the separated hot smoke dust and other powder added from the powder bin 8 are blown into the U-shaped dispersing pipe 4 at the dispersing gas inlet 42, the hot smoke dust and the powder enter the tuyere 5 through the dispersing branch pipe 41, meanwhile, air (or oxygen-enriched air) enters the tuyere 5 through the blowing branch pipe 71, and the hot smoke dust and the powder enter the smelting furnace 1 to participate in smelting under the dispersing action of the air (or oxygen-enriched air).
Claims (3)
1. A novel blast furnace, comprising a smelting furnace, characterized in that: the device also comprises a U-shaped dispersing pipe (4) and a recirculation cyclone cylinder (3); a plurality of tuyeres (5) are arranged on two sides of the smelting furnace (1); the U-shaped dispersing pipe (4) is arranged around the smelting furnace (1), the U-shaped dispersing pipe (4) is connected with a dispersing gas inlet (42), two side pipelines of the U-shaped dispersing pipe (4) are connected with a plurality of dispersing branch pipes (41), and the dispersing branch pipes (41) are connected with the air nozzles (5) in a one-to-one correspondence manner; the top of the recirculation cyclone cylinder (3) is provided with an exhaust gas outlet (32), the upper part of the recirculation cyclone cylinder (3) is connected with the smelting furnace (1) through a connecting pipeline (2), and the bottom of the recirculation cyclone cylinder (3) is connected with a dispersion gas inlet (42) through a circulating pipe (31).
2. A new blast furnace according to claim 1, characterized in that: the smelting furnace also comprises an annular blast enclosure pipe (7), wherein the annular blast enclosure pipe (7) is arranged around the smelting furnace (1), the annular blast enclosure pipe (7) is connected with an air inlet (72), a plurality of blast branch pipes (71) are arranged at the positions, located on two sides of the smelting furnace (1), of the annular blast enclosure pipe (7), and the blast branch pipes (71) are connected with the air nozzles (5) in a one-to-one correspondence manner.
3. A new blast furnace according to claim 1 or 2, characterized in that: also comprises a powder bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321844122.XU CN220418124U (en) | 2023-07-13 | 2023-07-13 | Novel blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321844122.XU CN220418124U (en) | 2023-07-13 | 2023-07-13 | Novel blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220418124U true CN220418124U (en) | 2024-01-30 |
Family
ID=89659636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321844122.XU Active CN220418124U (en) | 2023-07-13 | 2023-07-13 | Novel blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220418124U (en) |
-
2023
- 2023-07-13 CN CN202321844122.XU patent/CN220418124U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |