CN209974857U - Oxygen-enriched bottom blowing furnace - Google Patents
Oxygen-enriched bottom blowing furnace Download PDFInfo
- Publication number
- CN209974857U CN209974857U CN201822043254.8U CN201822043254U CN209974857U CN 209974857 U CN209974857 U CN 209974857U CN 201822043254 U CN201822043254 U CN 201822043254U CN 209974857 U CN209974857 U CN 209974857U
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- CN
- China
- Prior art keywords
- oxygen
- furnace body
- reaction furnace
- lances
- pipe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000001301 oxygen Substances 0.000 title claims abstract description 93
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 93
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 238000007664 blowing Methods 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 35
- 238000005507 spraying Methods 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 abstract description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 5
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 4
- 230000001788 irregular Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
The utility model discloses an oxygen boosting bottom blowing stove belongs to the non ferrous metal smelting field, and the purpose can make the molten bath internal solution stack to tumble, erode the problem of the life of furnace wall, reduction furnace body to oxygen lance arrangement mode of oxygen boosting bottom blowing stove among the prior art, including the reaction furnace body, reaction furnace body bottom is provided with a plurality of oxygen lances, and the zero degree angle of oxygen lance is arranged. The utility model can prolong the service life of the oxygen-enriched bottom blowing furnace.
Description
Technical Field
The utility model belongs to the non ferrous metal smelting field, concretely relates to oxygen boosting bottom blowing stove.
Background
Oxygen-enriched bottom blowing matte smelting is a new copper smelting process developed by our country, and is mainly applied to the copper smelting and lead smelting industries. The core equipment is an oxygen-enriched bottom blowing furnace, and the oxygen-enriched bottom blowing furnace sprays gas into a molten pool through an oxygen lance through a nozzle so that the molten pool is in a strong stirring state. Charging materials are added to the surface of a molten pool from the top of the furnace and are quickly involved in stirred melt to form good heat and mass transfer conditions, and a large amount of heat is released by oxidation reaction, so that the charging materials are quickly melted to generate copper matte and slag. However, the oxygen lances of the oxygen-rich bottom-blown converter in operation at present comprise 9-11 oxygen lances, wherein the lower row of the oxygen lances is provided with a plurality of oxygen lances which form an angle of 7 degrees, the upper row of the oxygen lances is provided with a plurality of oxygen lances which form an angle of 22 degrees, and the included angles of the oxygen lances from the upper row and the lower row are 15 degrees and are staggered. The arrangement mode of the oxygen lances in the prior art can lead the molten bath to be overlapped and overturned, so as to severely scour the furnace wall, thereby reducing the service life of the furnace body.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the oxygen lance arrangement mode to oxygen boosting bottom blowing stove among the prior art can make the molten bath internal solution stack turn over, erode the furnace wall, reduce the life's of furnace body problem, provides an oxygen boosting bottom blowing stove.
The utility model adopts the technical scheme as follows:
an oxygen-enriched bottom-blowing furnace comprises a reaction furnace body, wherein a plurality of oxygen lances are arranged at the bottom of the reaction furnace body, and the oxygen lances are arranged at a zero angle.
Further, the oxygen lances are arranged in single rows.
Further, the number of oxygen lances is not less than one.
Furthermore, the oxygen lance comprises an oxygen connecting seat fixedly connected with the reaction furnace body, and an inner pipe is connected on the oxygen connecting seat; the outer pipe is sleeved outside the inner pipe, the outer pipe is fixedly connected to the reaction furnace body, an air pipe is further arranged on the reaction furnace body, and the air pipe is communicated with the outer pipe.
Furthermore, a plurality of spiral ribs are arranged in a channel between the outer pipe and the inner pipe, the outer edges of the ribs are connected with the inner side wall of the outer pipe, and the inner edges of the ribs are connected with the outer side wall of the inner pipe.
Furthermore, a plurality of inclined holes are circumferentially arranged on one side, close to the end face of the oxygen lance, of the outer side wall of the outer pipe, and the inclined holes face the jet flow spraying direction.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses well oxygen rifle all is the zero degree angle and arranges, and oxygen one-way washing away has avoided the condition that the solution stack tumbles to appear to the life of reaction furnace body has been prolonged.
2. The utility model discloses in, because the oxygen rifle all adopts the single row to arrange to further reduced the solution and appeared the stack probability of overturning, thereby prolonged the life of reaction furnace body.
3. In the utility model, because the oxygen lances are arranged in a single row, the inevitable diameter of the oxygen lances cannot adopt the size of the prior art. If the number of oxygen lances is reduced, the capacity of the individual lances must be increased to meet the throughput requirements, and thus the lance diameter inevitably increases. However, the increase of the diameter of the oxygen lance can cause the production of irregular mushroom heads in the production process, and the irregular mushroom heads can seriously affect the service life of the oxygen lance and reduce the service life of the oxygen lance. Therefore, this embodiment employs a method of increasing the number of lances, which means that the diameter of a single lance is reduced, thereby avoiding the above-mentioned problems.
4. The utility model discloses in, the oxygen rifle adopts double-deck cover tubular form, and the inner tube is to the inside oxygen of carrying of reaction furnace body, and the outer tube is to carrying in the reaction furnace body that he says air or nitrogen gas for the cooling protection oxygen rifle has also reduced the splash of solution, has prolonged the life of reaction furnace body.
5. The utility model discloses in, helical structure's multicavity room is cut apart into with the passageway between outer tube and the inner tube to a plurality of spiral rib to make outer tube spun compressed nitrogen gas or air reduce the bonding of reaction furnace body top charge door, not only alleviateed the intensity of labour that the workman cleared up the charge door, also reduced the frequency that the handling capacity that the special clearance charge door of blowing out caused simultaneously reduces, improved production efficiency.
6. It has been found that the most vulnerable part of the reactor vessel is the bottom lance region of the reactor vessel because, after the high velocity gas jet is injected into the molten bath, the less rigid jet forms a band of bubbles at the lance tip and strikes and impacts the bottom of the furnace at a certain frequency, a phenomenon known as "bubble heel". In order to avoid the situation, the outer pipe is socially provided with a plurality of inclined holes, so that a part of compressed air or nitrogen can come out of the inclined holes, and the part of jet flow can prevent the bubble backseat phenomenon of the bubble bag, thereby prolonging the service life of the reaction furnace body.
Drawings
Fig. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic view of an oxygen lance of the present invention;
FIG. 3 is a schematic view of the rib and the inclined hole of the present invention;
the labels in the figure are: 1-reaction furnace body, 2-oxygen lance, 201-oxygen connecting seat, 202-inner tube, 203-outer tube, 204-air tube, 205-rib and 206-inclined hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
An oxygen-enriched bottom-blowing furnace comprises a reaction furnace body, wherein the bottom of the reaction furnace body 1 is provided with a plurality of oxygen lances 2, and the oxygen lances 2 are arranged at a zero angle.
In the embodiment, the arrangement of the oxygen lances at a zero angle is different from the arrangement of the oxygen lances at two angles in the prior art, wherein one oxygen lance is at an angle of 7 degrees, the other oxygen lance is at an angle of 22 degrees, and the included angles of the oxygen lances at the upper row and the lower row are 15 degrees and are staggered. In the prior art, the oxygen lance can lead the solution in the molten pool inside the reaction furnace body 1 to be overlapped and overturned to severely scour the furnace body under the opposite oxygen scouring, thereby reducing the service life of the reaction furnace body 1. In the embodiment, the oxygen lances are arranged at a zero angle, and the oxygen lances are flushed in a single direction, so that the situation that the molten mass is stacked and overturned is avoided, and the service life of the reaction furnace body is prolonged.
Example 2
On the basis of example 1, oxygen lances 2 are arranged in a single row.
In the embodiment, the oxygen lances 2 are arranged in a single row, so that the probability of the occurrence of superposition and turnover of the solution is further reduced, and the service life of the reaction furnace body is prolonged.
Example 3
On the basis of example 2, the number of oxygen lances 2 is not less than 9.
In this embodiment, since the oxygen lances 2 are arranged in a single row, the inevitable diameter dimension of the oxygen lances cannot be adopted in the conventional one. If the number of oxygen lances 2 is reduced, the capacity of the individual lances must be increased to meet the throughput requirements, and thus the lance diameter inevitably increases. However, the increase of the diameter of the oxygen lance can cause the production of irregular mushroom heads in the production process, and the irregular mushroom heads can seriously affect the service life of the oxygen lance and reduce the service life of the oxygen lance.
Therefore, this embodiment employs a method of increasing the number of lances, which means that the diameter of a single lance is reduced, thereby avoiding the above-mentioned problems.
Example 4
On the basis of the embodiment 3, the oxygen lance 2 comprises an oxygen connecting seat 201 fixedly connected with the reaction furnace body 1, and an inner pipe 202 is connected on the oxygen connecting seat 201; the outer pipe 203 is sleeved outside the inner pipe 202, the outer pipe 203 is fixedly connected to the reaction furnace body 1, the reaction furnace body 1 is further provided with an air pipe 204, and the air pipe 204 is communicated with the outer pipe 203.
Wherein, outer tube 203 passes through flange joint with oxygen connecting seat 201, has seted up the cavity in the oxygen connecting seat, and cavity one end and outer tube 203 intercommunication, another opening of cavity and air pipe 204 intercommunication, air pipe 204 also fixed connection are on oxygen connecting seat 201. The inner tube 202 crosses the whole chamber, and one end of the outer side of the inner tube is fixedly connected to the oxygen connecting seat 201 through a flange.
In the embodiment, the oxygen lance is in a double-layer sleeve form, the inner pipe 202 conveys oxygen to the interior of the reaction furnace body 1, and the outer pipe 203 conveys compressed air or nitrogen to the interior of the reaction furnace body 1 so as to cool and protect the oxygen lance, reduce the splashing of a solution and prolong the service life of the reaction furnace body 1.
Example 5
On the basis of embodiment 3, a plurality of spiral ribs 205 are arranged in the channel between the outer pipe 203 and the inner pipe 202, the outer edges of the ribs 205 are connected with the inner side wall of the outer pipe 203, and the inner edges of the ribs 205 are connected with the outer side wall of the inner pipe 202.
In this embodiment, the passageway between outer tube 203 and the inner tube 202 is divided into helical structure's multi-chamber to a plurality of spiral rib to make outer tube spun compressed nitrogen gas or air reduce the bonding of reaction furnace body 1 top charge door, not only alleviateed the intensity of labour that the workman cleared up the charge door, also reduced the frequency that the handling capacity that the special clearance charge door of blowing out caused simultaneously and reduced, improved production efficiency.
Example 6
On the basis of the embodiment 5, a plurality of inclined holes 206 are circumferentially arranged on one side of the outer side wall of the outer pipe 203 close to the end face of the oxygen lance 2, and the inclined holes 206 face the jet flow ejecting direction.
It has been found that the most vulnerable part of the reaction furnace 1 is in the region of the oxygen lances 2 at the bottom of the furnace because, after the high velocity gas jets are injected into the molten bath, the less rigid jets form bands of bubbles at the ends of the lances 2 and strike and impact the bottom of the furnace at a certain frequency, a phenomenon known as "bubble heel". In order to avoid the situation, the outer pipe is socially provided with a plurality of inclined holes, so that a part of compressed air or nitrogen can come out from the inclined holes 206, and the part of jet flow can prevent the bubble backseat phenomenon of the bubble bag, thereby prolonging the service life of the reaction furnace body.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides an oxygen boosting bottom blowing stove, includes reaction furnace body (1), its characterized in that: a plurality of oxygen lances (2) are arranged at the bottom of the reaction furnace body (1), the oxygen lances (2) are arranged at a zero angle, and the oxygen lances (2) are arranged in a single row;
the number of the oxygen lances (2) is not less than 9;
the oxygen lance (2) comprises an oxygen connecting seat (201) fixedly connected with the reaction furnace body (1), and an inner pipe (202) is connected to the oxygen connecting seat (201); inner tube (202) overcoat is equipped with outer tube (203), outer tube (203) fixed connection be in on the reaction furnace body (1), still be provided with air pipe (204) on the reaction furnace body (1), air pipe (204) with outer tube (203) intercommunication.
2. An oxygen-enriched bottom-blowing furnace as claimed in claim 1, characterized in that: a plurality of spiral ribs (205) are arranged in a channel between the outer pipe (203) and the inner pipe (202), the outer edges of the ribs (205) are connected with the inner side wall of the outer pipe (203), and the inner edges of the ribs (205) are connected with the outer side wall of the inner pipe (202).
3. An oxygen-enriched bottom-blowing furnace as claimed in claim 2, characterized in that: a plurality of inclined holes (206) are circumferentially arranged on one side, close to the end face of the oxygen lance (2), of the outer side wall of the outer pipe (203), and the inclined holes (206) face the jet flow spraying direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822043254.8U CN209974857U (en) | 2018-12-06 | 2018-12-06 | Oxygen-enriched bottom blowing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822043254.8U CN209974857U (en) | 2018-12-06 | 2018-12-06 | Oxygen-enriched bottom blowing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209974857U true CN209974857U (en) | 2020-01-21 |
Family
ID=69250258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822043254.8U Expired - Fee Related CN209974857U (en) | 2018-12-06 | 2018-12-06 | Oxygen-enriched bottom blowing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209974857U (en) |
-
2018
- 2018-12-06 CN CN201822043254.8U patent/CN209974857U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200121 |