CN102645098A - Electric furnace structure and manufacturing method thereof - Google Patents
Electric furnace structure and manufacturing method thereof Download PDFInfo
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- CN102645098A CN102645098A CN201110040588XA CN201110040588A CN102645098A CN 102645098 A CN102645098 A CN 102645098A CN 201110040588X A CN201110040588X A CN 201110040588XA CN 201110040588 A CN201110040588 A CN 201110040588A CN 102645098 A CN102645098 A CN 102645098A
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- 238000004519 manufacturing process Methods 0.000 title abstract description 18
- 239000011449 brick Substances 0.000 claims abstract description 77
- 238000009413 insulation Methods 0.000 claims abstract description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 90
- 239000003610 charcoal Substances 0.000 claims description 56
- 238000002360 preparation method Methods 0.000 claims description 18
- 239000011241 protective layer Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 229910052593 corundum Inorganic materials 0.000 claims description 8
- 239000010431 corundum Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000002893 slag Substances 0.000 description 15
- 230000007547 defect Effects 0.000 description 5
- 239000011490 mineral wool Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Furnace Details (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention provides an electric furnace structure and a manufacturing method thereof. The electric furnace structure comprises a furnace body and a furnace bottom for sealing the bottom of the furnace body, wherein the furnace bottom comprises a thermal insulation layer, a low-temperature thick seam pasting layer, a self-baking carbon brick layer and a protection layer sequentially from bottom to top. In the electric furnace structure, the low-temperature thick seam pasting layer is arranged between the thermal insulation layer and the self-baking carbon brick layer, and the acting force generated by the expansion of the self-baking carbon brick layer is absorbed by use of the low-temperature thick seam pasting layer so as to reduce the impact of the electric arc on the self-baking carbon brick layer, prolong the service life of the bottom of the electric furnace, increase the maintenance period of the electric furnace and further improve the production efficiency of the electric furnace. Moreover, the low-temperature thick seam pasting layer does not need a long maintenance period in the manufacturing process, thus the construction period for manufacturing the electric furnace can be shortened.
Description
Technical field
The present invention relates to a kind of electric cooker structure that is used for non-metallic products such as operating mine slag wool and preparation method thereof.
Background technology
Mineral wool is the staple shape inorfil that industrial waste slags such as a kind of utilization such as blast-furnace cinder, copper mine slag or aluminium ore slag are processed; It has light weight, thermal conductivity factor little, do not burn, characteristics such as corrosion-resistant, stable chemical performance and sound absorbing capabilities are good, it is stuffed heat insulated etc. to be widely used in filling thermal insulation, sound absorption, sound insulation and the various heat power equipment of building.
When the operating mine slag wool, at first need raw material be put into 1360～1400 ℃ slag electric stove fusion.Fig. 1 is the structural representation of slag electric stove.See also Fig. 1, slag electric stove comprises the furnace bottom 2 of body of heater 1 and sealing body of heater 1 bottom, and furnace bottom 2 comprises two-layer insulating brick 3 from bottom to top successively, mixes dirt bed 4, self-baked charcoal brick layer 5 and corundum coating protection layer 6.There is following shortcoming in above-mentioned slag electric stove:
The first, there is the slit between the self-baked charcoal brick, in use, self-baked charcoal brick floats easily.Although slag electric stove will carry out baker under 400～500 ℃ temperature before building the back by laying bricks or stones, using, this can not eliminate the slit between the self-baked charcoal brick.
The second, in the use of slag electric stove, because the heating-up temperature at heated by electrodes initial stage is extremely inhomogeneous, this makes the mixed dirt bed 22 that is positioned at furnace bottom 2 zoness of different produce differential expansion, causes self-baked charcoal brick layer 23 by jack-up.Therefore, above-mentioned slag electric stove use just needed the stopping production overhaul in about two months, otherwise caused production accident because of self-baked charcoal brick floats easily.
The 3rd, when making slag electric stove, after insulating brick 21 surface casting mix dirt bed 22, need long defects liability period (more than 24 hours), be used for mixing dirt bed 22 and solidify, therefore, the engineering time of slag electric stove is longer.
Summary of the invention
Technical problem to be solved by this invention is to the above-mentioned deficiency that exists in the prior art, and a kind of electric cooker structure is provided, and this electric cooker structure can avoid self-baked charcoal brick to float, thereby prolongs the service life of electric furnace.
The present invention also provides a kind of preparation method of electric cooker structure, and this preparation method can avoid self-baked charcoal brick to float, thereby prolongs the service life of electric furnace.
For solving the problems of the technologies described above, the present invention provides a kind of electric cooker structure, and the furnace bottom that this electric cooker structure comprises body of heater and seals said bottom of furnace body, said furnace bottom comprise heat-insulation layer, low temperature tailor-tacking paste layer, self-baked charcoal brick layer and protective layer from bottom to top successively.
Preferably, said heat-insulation layer adopts high-alumina brick.
Preferably, said low temperature tailor-tacking paste layer adopts a carbon element ramming material to process.
Preferably, said self-baked charcoal brick layer is structure as a whole.
Preferably, said protective layer adopts corundum coating to process.
The present invention also provides a kind of preparation method of electric furnace, may further comprise the steps: the building heat insulation layer; Make the low temperature tailor-tacking and stick with paste layer; Make the self-baked charcoal brick layer; Make protective layer.
Preferably, when building said heat-insulation layer by laying bricks or stones, said heat-insulation layer adopts high-alumina brick to build by laying bricks or stones and forms.
Preferably, when the said low temperature tailor-tacking of making was stuck with paste layer, said low temperature tailor-tacking was stuck with paste layer employing carbon element ramming material, and, said carbon element ramming material ramming is solid.
Preferably, when making said self-baked charcoal brick layer, said self-baked charcoal brick layer adopts self-baked charcoal brick to build by laying bricks or stones and forms.
Preferably, when making said protective layer, said protective layer adopts the cast of corundum coating to form.
Preferably, after making said protective layer, also comprise the baker step, said oven drying temperature is more than 800 ℃, and said furnace drying time is more than 24 hours, so that said self-baked charcoal brick layer is integrally formed structure.
The present invention has following beneficial effect:
Electric cooker structure provided by the invention; Between heat-insulation layer and self-baked charcoal brick layer, adopt the low temperature tailor-tacking to stick with paste layer; Stick with paste layer by the low temperature tailor-tacking and absorb the active force that the self-baked charcoal brick layer produces because of expansion, thereby alleviate the impact of electric arc, and then improve the service life of electric furnace furnace bottom the self-baked charcoal brick layer; This will prolong the MAINTENANCE OF ELECTRIC ARC FURNACE cycle again, thereby improve the production efficiency of electric furnace.In addition, the low temperature tailor-tacking is stuck with paste layer does not need long defects liability period in manufacturing process, therefore, can shorten the construction period of making electric furnace.
As a preferred embodiment of the present invention, the self-baked charcoal brick layer is structure as a whole, this avoided self-baked charcoal brick in use float problem, thereby reduce the probability that electric furnace has an accident, and then prolong the service life of electric furnace furnace bottom.
Similarly, the preparation method of electric cooker structure provided by the invention adopts the low temperature tailor-tacking to stick with paste layer between heat-insulation layer and self-baked charcoal brick layer, does not need long defects liability period because the low temperature tailor-tacking is stuck with paste layer, therefore can shorten the construction period of making electric furnace.And; The low temperature tailor-tacking is stuck with paste layer and is absorbed the active force that the self-baked charcoal brick layer produces because of expansion, thereby alleviates the impact of electric arc to the self-baked charcoal brick layer, and then improves the service life of electric furnace furnace bottom; This will prolong the MAINTENANCE OF ELECTRIC ARC FURNACE cycle again, thereby improve the production efficiency of electric furnace.
As a preferred embodiment of the present invention, make the low temperature tailor-tacking stick with paste layer through high-temperature roasting and be integrally formed structure, thereby solved the phenomenon that self-baked charcoal brick floats, prolong the service life of furnace bottom, reduced the probability of furnace bottom generation production accident.
Description of drawings
Fig. 1 is the structural representation of slag electric stove;
Fig. 2 is the structural representation of electric furnace provided by the invention; And
Fig. 3 is the flow chart of the preparation method of electric furnace provided by the invention.
The specific embodiment
For making those skilled in the art understand technical scheme of the present invention better, electric cooker structure provided by the invention and preparation method thereof is described in detail below in conjunction with accompanying drawing.
Fig. 2 is the structural representation of electric furnace provided by the invention.See also Fig. 2, the furnace bottom 22 that electric cooker structure comprises body of heater 21 and is used to seal body of heater 21 bottoms, furnace bottom 22 comprise heat-insulation layer 23, low temperature tailor-tacking paste layer 24, self-baked charcoal brick layer 25 and protective layer 26 from bottom to top successively.Wherein, heat-insulation layer 23 adopts light weeight alumina brick, and thickness is more than the 130mm, is used to reduce the loss of furnace heat.The low temperature tailor-tacking is stuck with paste layer 24 and is used to be connected heat-insulation layer 23 and resist layer 25, absorbs the expansion of resist layer 25 simultaneously and absorbs the impact of electric arc to resist layer 25.Low temperature tailor-tacking paste layer Lushan, Pingdingshan City, 24 employing Henan Province circumference charcoal have the carbon element ramming material of limit company production to be processed, and its thickness is more than the 115mm.Lushan, Pingdingshan City, self-baked charcoal brick layer 25 employing Henan Province circumference charcoal have the self-baked charcoal brick of limit company production and builds the integrative-structure that forms by laying bricks or stones, and thickness is more than the 345mm, is used to resist the erosion of slag to furnace bottom.The corundum coating that protective layer 26 adopts Zhengzhou Huayu Refractory Co., Ltd to produce is processed, and thickness is more than the 10mm, is used for secluding air when baker, to prevent the oxidation of self-baked charcoal brick.
Present embodiment low temperature tailor-tacking is stuck with paste layer 24 can absorb the active force that the self-baked charcoal brick layer produces because of expansion, thereby alleviates the impact of electric arc to the self-baked charcoal brick layer, and then improves the service life of electric furnace furnace bottom.This can prolong the MAINTENANCE OF ELECTRIC ARC FURNACE cycle, thereby improves the production efficiency of electric furnace.In addition, the self-baked charcoal brick layer is structure as a whole, can prevent self-baked charcoal brick in use float problem; Thereby reduce the probability that electric furnace has an accident; And then the service life of prolongation electric furnace furnace bottom, this has further prolonged the MAINTENANCE OF ELECTRIC ARC FURNACE cycle, thereby improves the production efficiency of electric furnace.
Fig. 3 is the flow chart of the preparation method of electric furnace provided by the invention.See also Fig. 3, the preparation method of the electric furnace that present embodiment provides may further comprise the steps:
Step s1, the building heat insulation layer.
Heat-insulation layer 23 comprises two-layer at least, and its thickness is more than the 130mm, is built by laying bricks or stones by high-alumina brick to form.Heat-insulation layer 23 is used to reduce the loss of furnace heat, and the heat-insulating property of light weeight alumina brick is better, and therefore, the preferred light weeight alumina brick that adopts is built by laying bricks or stones in practical application.
Step s2 makes the low temperature tailor-tacking and sticks with paste layer.
The low temperature tailor-tacking is stuck with paste layer Lushan, Pingdingshan City, 24 employing Henan Province circumference charcoal and is have the carbon element ramming material making that limit company produces.During making, at first the carbon element ramming material is completely spread furnace bottom, again that its ramming is solid, the compression ratio (drafts of carbon element ramming material) >=30% of carbon element ramming material thinks that promptly ramming is solid usually, last levelling.The thickness that the low temperature tailor-tacking is stuck with paste layer 24 is more than the 115mm.After low temperature tailor-tacking paste layer 24 completes, do not need defects liability period to get final product implementation step s3.Therefore, between heat-insulation layer 23 and self-baked charcoal brick layer 25, adopt the low temperature tailor-tacking to stick with paste the construction period that layer 24 can shorten electric furnace.
Step s3 makes the self-baked charcoal brick layer.
The self-baked charcoal brick that adopts Lushan, Pingdingshan City, Henan Province circumference charcoal to have the production of limit company is built self-baked charcoal brick layer 25 by laying bricks or stones, and its thickness is more than the 345mm.
Step s4 makes protective layer.
Protective layer 26 adopts Zhengzhou Huayu Refractory Co., Ltd to produce the cast of corundum coating and forms, and corundum coating pouring procedure is identical in pouring procedure and the prior art, and thickness is more than the 10mm.Protective layer 26 is used for secluding air, preventing the oxidation of self-baked charcoal brick when the baker, and after electric furnace puts into production, avoids high temperature furnace slag to corrode self-baked charcoal brick layer 25, thereby prolongs the life-span of electric furnace furnace bottom.
Step s5, baker.
In burner hearth, put into firewood and light, be blown into compressed air from the top of body of heater 1 then, make temperature >=800 ℃ of burner hearth, insulation is more than 24 hours, thereby makes the self-baked charcoal brick thorough roasting and be bonded to an integrally-built self-baked charcoal brick layer 25.Because self-baked charcoal brick layer 25 is structure as a whole, the problem that does not in use exist self-baked charcoal brick to float, thus can prolong service life of furnace bottom, reduce the probability that furnace bottom has an accident.
The preparation method of the electric furnace that present embodiment provides adopts the low temperature tailor-tacking to stick with paste layer between heat-insulation layer and self-baked charcoal brick layer, does not need long defects liability period because the low temperature tailor-tacking is stuck with paste layer, therefore can shorten the construction period of making electric furnace.And; The low temperature tailor-tacking is stuck with paste the active force that layer can absorb the self-baked charcoal brick layer to produce because of expansion, thereby alleviates the impact of electric arc to the self-baked charcoal brick layer, and then improves the service life of electric furnace furnace bottom; This will make more than the MAINTENANCE OF ELECTRIC ARC FURNACE cycle stretch-out to 23 hour, thereby improve the production efficiency of electric furnace.
Need to prove that the electric furnace that electric cooker structure that present embodiment provides and the preparation method that adopts present embodiment to provide are made not only can be used for the operating mine slag wool, but also can be used to produce other non-metallic products.
It is understandable that above embodiment only is the illustrative embodiments that adopts for principle of the present invention is described, yet the present invention is not limited thereto.For the one of ordinary skilled in the art, under the situation that does not break away from spirit of the present invention and essence, can make various modification and improvement, these modification also are regarded as protection scope of the present invention with improving.
Claims (11)
1. electric cooker structure, the furnace bottom that comprises body of heater and seal said bottom of furnace body is characterized in that, the structure of said furnace bottom comprises successively that from bottom to top heat-insulation layer, low temperature tailor-tacking stick with paste layer, self-baked charcoal brick layer and protective layer.
2. electric cooker structure according to claim 1 is characterized in that, said heat-insulation layer adopts high-alumina brick.
3. electric cooker structure according to claim 1 is characterized in that, said low temperature tailor-tacking is stuck with paste layer and adopted the carbon element ramming material to process.
4. electric cooker structure according to claim 1 is characterized in that, said self-baked charcoal brick layer is structure as a whole.
5. electric cooker structure according to claim 1 is characterized in that, said protective layer adopts corundum coating to process.
6. the preparation method of an electric furnace is characterized in that, may further comprise the steps:
The building heat insulation layer;
Make the low temperature tailor-tacking and stick with paste layer;
Make the self-baked charcoal brick layer;
Make protective layer.
7. preparation method according to claim 6 is characterized in that building by laying bricks or stones said heat-insulation layer, and said heat-insulation layer adopts high-alumina brick to build by laying bricks or stones and forms.
8. preparation method according to claim 6 is characterized in that making said low temperature tailor-tacking and sticks with paste layer, and said low temperature tailor-tacking is stuck with paste layer and adopted the carbon element ramming material, and, said carbon element ramming material ramming is solid.
9. preparation method according to claim 6 is characterized in that making said self-baked charcoal brick layer, and said self-baked charcoal brick layer adopts self-baked charcoal brick to build by laying bricks or stones and forms.
10. preparation method according to claim 6 is characterized in that making said protective layer, and said protective layer adopts the cast of corundum coating to form.
11. according to any described preparation method of claim 6-10; It is characterized in that after making said protective layer, also comprise the baker step, said oven drying temperature is more than 800 ℃; Said furnace drying time is more than 24 hours, so that said self-baked charcoal brick layer is integrally formed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110040588.XA CN102645098B (en) | 2011-02-18 | 2011-02-18 | Electric furnace structure and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110040588.XA CN102645098B (en) | 2011-02-18 | 2011-02-18 | Electric furnace structure and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102645098A true CN102645098A (en) | 2012-08-22 |
| CN102645098B CN102645098B (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110040588.XA Expired - Fee Related CN102645098B (en) | 2011-02-18 | 2011-02-18 | Electric furnace structure and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631587A (en) * | 2018-12-26 | 2019-04-16 | 焦作市嘉兴科技有限公司 | A kind of corundum smelting cupola well builds by laying technique |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2490532Y (en) * | 2001-05-22 | 2002-05-08 | 宁永章 | Bottom carbon lining build furnace of ore-smelting furnace |
| US20080317085A1 (en) * | 2004-05-13 | 2008-12-25 | Sgl Carbon Ag | Lining for Carbothermic Reduction Furnace |
| CN101419020A (en) * | 2008-12-01 | 2009-04-29 | 交城义望铁合金有限责任公司 | Manganese-rich slag electric furnace mounted with condensation lining |
-
2011
- 2011-02-18 CN CN201110040588.XA patent/CN102645098B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2490532Y (en) * | 2001-05-22 | 2002-05-08 | 宁永章 | Bottom carbon lining build furnace of ore-smelting furnace |
| US20080317085A1 (en) * | 2004-05-13 | 2008-12-25 | Sgl Carbon Ag | Lining for Carbothermic Reduction Furnace |
| CN101419020A (en) * | 2008-12-01 | 2009-04-29 | 交城义望铁合金有限责任公司 | Manganese-rich slag electric furnace mounted with condensation lining |
Non-Patent Citations (2)
| Title |
|---|
| 曾正明: "《工业炉修理手册》", 31 December 1998, 机械工业出版社 * |
| 李兴波 等: "自焙炭砖炉衬在大型矿热炉上的应用", 《铁合金》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631587A (en) * | 2018-12-26 | 2019-04-16 | 焦作市嘉兴科技有限公司 | A kind of corundum smelting cupola well builds by laying technique |
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| CN102645098B (en) | 2014-09-10 |
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Effective date of registration: 20220602 Address after: 3007, Hengqin international financial center building, No. 58, Huajin street, Hengqin new area, Zhuhai, Guangdong 519031 Patentee after: New founder holdings development Co.,Ltd. Patentee after: JIANGSU SUZHOU STEEL GROUP Co.,Ltd. Patentee after: SUZHOU SUXIN SPECIAL STEEL Co.,Ltd. Address before: 100871, Beijing, Haidian District, Cheng Fu Road, No. 298, Zhongguancun Fangzheng building, 5 floor Patentee before: PEKING UNIVERSITY FOUNDER GROUP Co.,Ltd. Patentee before: JIANGSU SUZHOU STEEL GROUP Co.,Ltd. Patentee before: SUZHOU SUXIN SPECIAL STEEL Co.,Ltd. |
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Granted publication date: 20140910 |