CN220524673U - Furnace bottom structure of submerged arc furnace - Google Patents
Furnace bottom structure of submerged arc furnace Download PDFInfo
- Publication number
- CN220524673U CN220524673U CN202322101475.7U CN202322101475U CN220524673U CN 220524673 U CN220524673 U CN 220524673U CN 202322101475 U CN202322101475 U CN 202322101475U CN 220524673 U CN220524673 U CN 220524673U
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- CN
- China
- Prior art keywords
- submerged arc
- arc furnace
- cooling
- furnace bottom
- blind hole
- Prior art date
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Links
- 238000001816 cooling Methods 0.000 claims abstract description 48
- 238000009423 ventilation Methods 0.000 claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000011819 refractory material Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 7
- 229910000914 Mn alloy Inorganic materials 0.000 description 4
- 239000011449 brick Substances 0.000 description 4
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000005997 Calcium carbide Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910001145 Ferrotungsten Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model discloses a submerged arc furnace bottom structure, which comprises cooling blind holes and ventilation pipes, wherein a plurality of cooling blind holes are formed in the side wall of the submerged arc furnace bottom along the circumferential direction, and are arranged along the circle center of the submerged arc furnace bottom in a radial mode; the inside of each cooling blind hole is respectively inserted with one ventilation pipe, and the outer diameter of each ventilation pipe is smaller than the inner diameter of each cooling blind hole; the outer end of the ventilation pipe is communicated with the air supply pipe. The advantages are that: cooling air sent by the air supply pipe is sent into the cooling blind hole of the furnace bottom of the submerged arc furnace through the ventilation pipe, and then the cooling blind hole is discharged after absorbing heat of the furnace bottom of the submerged arc furnace, so that the temperature of the furnace bottom of the submerged arc furnace is controlled within a certain range, the condition of extremely rapid cooling and heating does not occur, further iron infiltration of the furnace bottom can be effectively prevented, the furnace bottom refractory material can bear the furnace bottom, and the service life of the furnace body is prolonged.
Description
Technical field:
the utility model relates to the technical field of submerged arc furnaces, in particular to a submerged arc furnace bottom structure.
The background technology is as follows:
the furnace bottom ventilation modification scheme has the advantage that the probability of damaging the furnace bottom of the large-sized submerged arc furnace is far greater than that of the furnace bottom of the small-sized submerged arc furnace. The furnace bottom is in brick floating accident, which causes great economic loss. Through multiple practices and reconstruction, the furnace bottom ventilation device is additionally arranged.
The ore-smelting furnace is also called as electric arc furnace or electric resistance furnace, and is mainly used for reducing and smelting ore, carbonaceous reducing agent and solvent. The method is mainly used for producing ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, ferrosilicomanganese and the like, and is an important industrial raw material in the metallurgical industry and a chemical raw material such as calcium carbide and the like. The submerged arc furnace body is internally provided with molten liquid, the bottom is provided with silicon-manganese alloy liquid, the upper part is provided with slag liquid, and the specific gravity of the silicon-manganese alloy liquid is heavier and reaches 5.6 tons/cubic meter; the material of the submerged arc furnace body is mainly carbonaceous materials, the submerged arc furnace body is easy to crack after high-temperature roasting, the silicon-manganese alloy liquid continuously permeates into cracks, the carbonaceous materials of the furnace body shrink when the furnace temperature is reduced, the liquid stretching into the cracks is solidified, the carbonaceous materials expand when the furnace temperature rises again, but the solidified silicon-manganese alloy is not easy to become liquid again, so that the process is repeated, the cracks of the furnace bottom are larger and larger, the permeated alloy is also more and more, finally, the furnace bottom carbon bricks are tilted, furnace bottom floating brick accidents occur, the service life of equipment is influenced, and if the phenomenon that the serious potential safety hazard is caused in time is discovered, the furnace bottom floating brick accidents can be finally caused.
The utility model comprises the following steps:
the utility model aims to provide a furnace bottom structure of an ore-smelting furnace capable of reducing temperature.
The utility model is implemented by the following technical scheme: the submerged arc furnace bottom structure comprises cooling blind holes and ventilation pipes, wherein a plurality of cooling blind holes are formed in the side wall of the submerged arc furnace bottom along the circumferential direction, and are arranged along the circle center of the submerged arc furnace bottom in a radial mode; the inside of each cooling blind hole is respectively inserted with one ventilation pipe, and the outer diameter of each ventilation pipe is smaller than the inner diameter of each cooling blind hole; the outer end of the ventilation pipe is communicated with the air supply pipe.
Further, the ratio of the aperture of the cooling blind hole to the outer diameter of the ventilation pipe is 2:1.
Further, thermocouples are installed at the bottom of the submerged arc furnace and the bottom of the submerged arc furnace corresponding to the center of the polar circle of the submerged arc furnace, and the thermocouples are installed in the plane below the cooling blind hole.
Further, the vertical distance between the thermocouple and the cooling blind hole is 30-50cm.
Further, the bottom of the cooling blind hole extends to the position right below the circle of the electrode core of the submerged arc furnace.
The utility model has the advantages that: cooling air sent by the air supply pipe is sent into the cooling blind hole of the furnace bottom of the submerged arc furnace through the ventilation pipe, and then the cooling blind hole is discharged after absorbing heat of the furnace bottom of the submerged arc furnace, so that the temperature of the furnace bottom of the submerged arc furnace is controlled within a certain range, the condition of extremely rapid cooling and heating does not occur, further iron infiltration of the furnace bottom can be effectively prevented, the furnace bottom refractory material can bear the furnace bottom, and the service life of the furnace body is prolonged.
Description of the drawings:
fig. 1 is a schematic diagram of the overall structure of the present utility model.
FIG. 2 is a schematic plan view of the bottom of the submerged arc furnace.
Tag name
1-cooling blind holes, 2-ventilation pipes, 3-furnace bottoms of submerged arc furnaces, 4-blast pipes, 5-electrodes, 6-submerged arc furnace polar center circles and 7-thermocouples.
The specific embodiment is as follows:
in the description of the present utility model, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated azimuth or positional relationship is based on the azimuth or positional relationship shown in the drawings, only for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
As shown in fig. 1 and 2, the submerged arc furnace bottom structure comprises cooling blind holes 1 and ventilation pipes 2, wherein a plurality of cooling blind holes 1 are formed in the side wall of the submerged arc furnace bottom 3 along the circumferential direction, and the cooling blind holes 1 are arranged along the circle center of the submerged arc furnace bottom 3 in a radial mode; the bottom of the cooling blind hole 1 extends to the position right below the circumference of the electrode core circle 6 of the submerged arc furnace. A ventilation pipe 2 is inserted into each cooling blind hole 1, the outer diameter of the ventilation pipe 2 is smaller than the inner diameter of the cooling blind hole 1, and a return air channel is formed between the outer wall of the ventilation pipe 2 and the inner wall of the cooling blind hole 1; in the embodiment, the ratio of the aperture of the cooling blind hole 1 to the outer diameter of the ventilation pipe 2 is 2:1; the outer end of the ventilation pipe 2 is communicated with a blast pipe 4. The cooling air is blown into the hole bottom of the cooling blind hole 1 through the ventilation pipe 2 by the air supply pipe 4, then flows to the hole opening of the cooling blind hole 1 through the return air channel, finally is discharged out of the cooling blind hole 1, and the cooling air can absorb the heat of the submerged arc furnace bottom 3 in the process of flowing from the hole bottom of the cooling blind hole 1 to the hole opening, so that the cooling effect is achieved.
The thermocouple 7 is arranged on the submerged arc furnace bottom 3 under each phase electrode 5 of the submerged arc furnace and the submerged arc furnace bottom 3 corresponding to the center of the submerged arc furnace polar circle 6, the thermocouple 7 is arranged in the plane below the cooling blind hole 1, and the vertical distance between the thermocouple 7 and the cooling blind hole 1 is 30-50cm. The temperature of each point can be monitored through the thermocouple 7, and the staff can regulate and control the air quantity of the cooling air sent by the air supply pipe 4 according to the detected temperature of each point, so that the aim of controlling the temperature of the bottom 3 of the submerged arc furnace is fulfilled.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (6)
1. The submerged arc furnace bottom structure is characterized by comprising cooling blind holes and ventilation pipes, wherein a plurality of cooling blind holes are formed in the side wall of the submerged arc furnace bottom along the circumferential direction, and are arranged along the circle center of the submerged arc furnace bottom in a radial mode; the inside of each cooling blind hole is respectively inserted with one ventilation pipe, and the outer diameter of each ventilation pipe is smaller than the inner diameter of each cooling blind hole; the outer end of the ventilation pipe is communicated with the air supply pipe.
2. The submerged arc furnace hearth structure of claim 1, wherein the ratio of the aperture of the cooling blind hole to the outside diameter of the ventilation pipe is 2:1.
3. The submerged arc furnace hearth structure according to claim 1 or 2, wherein thermocouples are installed at both the submerged arc furnace hearth directly below each phase electrode of the submerged arc furnace and the submerged arc furnace hearth corresponding to the center of the submerged arc furnace polar circle, and the thermocouples are installed in a plane below the cooling blind hole.
4. A submerged arc furnace hearth structure according to claim 3, wherein the vertical distance between the thermocouple and the blind cooling hole is 30-50cm.
5. The submerged arc furnace hearth structure of claim 1, 2 or 4, wherein the bottom of the cooling blind hole extends directly below the circumference of the submerged arc furnace pole core.
6. A submerged arc furnace hearth structure according to claim 3, wherein the bottom of the cooling blind hole extends directly below the circumference of the submerged arc furnace pole core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322101475.7U CN220524673U (en) | 2023-08-04 | 2023-08-04 | Furnace bottom structure of submerged arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322101475.7U CN220524673U (en) | 2023-08-04 | 2023-08-04 | Furnace bottom structure of submerged arc furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220524673U true CN220524673U (en) | 2024-02-23 |
Family
ID=89931788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322101475.7U Active CN220524673U (en) | 2023-08-04 | 2023-08-04 | Furnace bottom structure of submerged arc furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220524673U (en) |
-
2023
- 2023-08-04 CN CN202322101475.7U patent/CN220524673U/en active Active
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