CN102645098B - Electric furnace structure and manufacturing method thereof - Google Patents
Electric furnace structure and manufacturing method thereof Download PDFInfo
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- CN102645098B CN102645098B CN201110040588.XA CN201110040588A CN102645098B CN 102645098 B CN102645098 B CN 102645098B CN 201110040588 A CN201110040588 A CN 201110040588A CN 102645098 B CN102645098 B CN 102645098B
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- layer
- self
- tacking
- tailor
- baked charcoal
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- 238000004519 manufacturing process Methods 0.000 title abstract description 20
- 239000011449 brick Substances 0.000 claims abstract description 81
- 238000009413 insulation Methods 0.000 claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- 239000010410 layer Substances 0.000 claims description 98
- 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 13
- 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
- 239000007787 solid Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000010891 electric arc Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 15
- 230000007547 defect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000011490 mineral wool Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 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
- 239000000126 substance 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
- 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
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- 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 for the production of non-metallic products such as mineral wools and preparation method thereof.
Background technology
Mineral wool is the staple shape inorfil that the industrial waste slags such as a kind of utilization such as blast-furnace cinder, Copper Slag or aluminium ore slag are made, its have light weight, thermal conductivity factor little, do not burn, corrosion-resistant, stable chemical performance and the feature such as sound absorbing capabilities is good, be widely used in filling thermal insulation, sound absorption, sound insulation and the various heat power equipment of building stuffed heat insulated etc.
In the time of operating mine slag wool, first need the raw material to put into the slag electric stove melting of 1360～1400 DEG C.Fig. 1 is the structural representation of slag electric stove.Refer to 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, mixed dirt bed 4, self-baked charcoal brick layer 5 and corundum coating protection layer 6 from bottom to top successively.There is following shortcoming in above-mentioned slag electric stove:
The first, between self-baked charcoal brick, there is gap, in use, self-baked charcoal brick easily floats.Although slag electric stove after building by laying bricks or stones, use before, at the temperature of 400～500 DEG C, carry out baker, this can not eliminate the gap between self-baked charcoal brick.
The second, in the use procedure 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 uses and just needs stopping production overhaul in about two months, otherwise easily causes production accident because self-baked charcoal brick floats.
The 3rd, while making slag electric stove, after the mixed dirt bed 22 of insulating brick 21 surface casting, need long defects liability period (more than 24 hours), solidify for mixed dirt bed 22, therefore, the engineering time of slag electric stove is longer.
Summary of the invention
Technical problem to be solved by this invention is for above shortcomings in 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 extends 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 extends the service life of electric furnace.
For solving the problems of the technologies described above, the invention provides a kind of electric cooker structure, this electric cooker structure comprises body of heater and seals the furnace bottom of described bottom of furnace body, described furnace bottom comprises that heat-insulation layer, low temperature tailor-tacking stick with paste layer, self-baked charcoal brick layer and protective layer from bottom to top successively.
Preferably, described heat-insulation layer adopts high-alumina brick.
Preferably, described low temperature tailor-tacking paste layer adopts a carbon element ramming material to make.
Preferably, described self-baked charcoal brick layer is structure as a whole.
Preferably, described protective layer adopts corundum coating to make.
The present invention also provides a kind of preparation method of electric furnace, comprises the following steps: building heat insulation layer; Make low temperature tailor-tacking and stick with paste layer; Make self-baked charcoal brick layer; Make protective layer.
Preferably, in the time building described heat-insulation layer by laying bricks or stones, described heat-insulation layer adopts high-alumina brick to build by laying bricks or stones and forms.
Preferably, in the time making described low temperature tailor-tacking paste layer, described low temperature tailor-tacking is stuck with paste layer and is adopted carbon element ramming material, and, by solid described carbon element ramming material ramming.
Preferably, in the time making described self-baked charcoal brick layer, described self-baked charcoal brick layer adopts self-baked charcoal brick to build by laying bricks or stones and forms.
Preferably, in the time making described protective layer, described protective layer adopts the cast of corundum coating to form.
Preferably, after making described protective layer, also comprise baker step, described oven drying temperature is more than 800 DEG C, and described furnace drying time is more than 24 hours, so that described self-baked charcoal brick layer forms integrative-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 low temperature tailor-tacking to stick with paste layer, stick with paste layer by low temperature tailor-tacking and absorb the active force that self-baked charcoal brick layer produces because of expansion, thereby alleviate the impact of electric arc to self-baked charcoal brick layer, and then the service life of improving EAF bottom, this will extend the maintenance cycle of electric furnace again, thereby improves the production efficiency of electric furnace.In addition, 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, 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 extend the service life of EAF bottom.
Similarly, the preparation method of electric cooker structure provided by the invention adopts low temperature tailor-tacking to stick with paste layer between heat-insulation layer and self-baked charcoal brick layer, because low temperature tailor-tacking paste layer does not need long defects liability period, therefore can shorten the construction period of making electric furnace.And, low temperature tailor-tacking is stuck with paste layer and is absorbed the active force that self-baked charcoal brick layer produces because of expansion, thereby alleviates the impact of electric arc to self-baked charcoal brick layer, and then improves the service life of EAF bottom, this will extend the maintenance cycle of electric furnace again, thereby improves the production efficiency of electric furnace.
As a preferred embodiment of the present invention, make low temperature tailor-tacking stick with paste layer by high-temperature roasting and form integrative-structure, thereby solved the phenomenon that self-baked charcoal brick floats, extend the service life of furnace bottom, reduce the probability of furnace bottom production development accident.
Brief description of the 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.
Detailed description of the invention
For making those skilled in the art understand better technical scheme of the present invention, below in conjunction with accompanying drawing, electric cooker structure provided by the invention and preparation method thereof is described in detail.
Fig. 2 is the structural representation of electric furnace provided by the invention.Refer to Fig. 2, electric cooker structure comprises body of heater 21 and for sealing the furnace bottom 22 of body of heater 21 bottoms, furnace bottom 22 comprises 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 130mm, for reducing the loss of furnace heat.Low temperature tailor-tacking is stuck with paste layer 24 for being 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 is stuck with paste layer 24 and is adopted the carbon element ramming material of Lushan, Pingdingshan City, Henan Province circumference Tan Su Co., Ltd production to make, and its thickness is more than 115mm.The self-baked charcoal brick that self-baked charcoal brick layer 25 adopts Lushan, Pingdingshan City, Henan Province circumference Tan Su Co., Ltd to produce is built the integrative-structure forming by laying bricks or stones, and thickness is more than 345mm, for resisting the erosion of slag to furnace bottom.The corundum coating that protective layer 26 adopts Zhengzhou Huayu Refractory Co., Ltd to produce is made, and thickness is more than 10mm, for isolated air when the baker, to prevent the oxidation of self-baked charcoal brick.
The present embodiment low temperature tailor-tacking is stuck with paste layer 24 can absorb the active force that self-baked charcoal brick layer produces because of expansion, thereby alleviates the impact of electric arc to self-baked charcoal brick layer, and then improves the service life of EAF bottom.This can extend the maintenance cycle of electric furnace, thereby improves the production efficiency of electric furnace.In addition, 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 EAF bottom, this has further extended the maintenance cycle of electric furnace, 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.Refer to Fig. 3, the preparation method of the electric furnace that the present embodiment provides comprises the following steps:
Step s1, building heat insulation layer.
Heat-insulation layer 23 at least comprises two-layer, and its thickness is more than 130mm, is built by laying bricks or stones and is formed by high-alumina brick.Heat-insulation layer 23 is for reducing the loss of furnace heat, and the heat-insulating property of light weeight alumina brick is better, therefore, preferably adopts in actual applications light weeight alumina brick to build by laying bricks or stones.
Step s2, makes low temperature tailor-tacking and sticks with paste layer.
Low temperature tailor-tacking is stuck with paste layer 24 and is adopted the carbon element ramming material of Lushan, Pingdingshan City, Henan Province circumference Tan Su Co., Ltd production to make.When making, first carbon element ramming material is completely spread to furnace bottom, then by solid its ramming, the compression ratio (drafts of carbon element ramming material) >=30% of carbon element ramming material thinks that ramming is solid conventionally, last levelling.The thickness that low temperature tailor-tacking is stuck with paste layer 24 is more than 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 low temperature tailor-tacking paste layer 24 can shorten the construction period of electric furnace.
Step s3, makes self-baked charcoal brick layer.
The self-baked charcoal brick that adopts Lushan, Pingdingshan City, Henan Province circumference Tan Su Co., Ltd to produce is built self-baked charcoal brick layer 25 by laying bricks or stones, and its thickness is more than 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 pouring procedure is identical with corundum coating pouring procedure in prior art, and thickness is more than 10mm.Protective layer 26 is for isolated air, to prevent 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 extends the life-span of EAF bottom.
Step s5, baker.
In burner hearth, put into firewood and light, being then blown into compressed air from the top of body of heater 1, making temperature >=800 DEG C of burner hearth, insulation is more than 24 hours, thereby makes 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 extend service life of furnace bottom, reduce the probability that furnace bottom has an accident.
The preparation method of the electric furnace that the present embodiment provides adopts low temperature tailor-tacking to stick with paste layer between heat-insulation layer and self-baked charcoal brick layer, because low temperature tailor-tacking paste layer does not need long defects liability period, therefore can shorten the construction period of making electric furnace.And, low temperature tailor-tacking is stuck with paste layer can absorb the active force that self-baked charcoal brick layer produces because of expansion, thereby alleviates the impact of electric arc to self-baked charcoal brick layer, and then improves the service life of EAF bottom, this extends to the maintenance cycle that makes electric furnace more than 23 hours, thereby improves the production efficiency of electric furnace.
It should be noted that, the electric cooker structure that the present embodiment provides and the electric furnace that adopts the preparation method that provides of the present embodiment to make, not only can be for the production of mineral wool, but also can be for the production of other non-metallic products.
Be understandable that, above embodiment is only used to principle of the present invention is described and the illustrative embodiments that adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (10)
1. an electric cooker structure, comprise body of heater and seal the furnace bottom of described bottom of furnace body, it is characterized in that, the structure of described furnace bottom comprises heat-insulation layer, low temperature tailor-tacking paste layer, self-baked charcoal brick layer and protective layer from bottom to top successively, described low temperature tailor-tacking is stuck with paste layer and is connected heat-insulation layer and self-baked charcoal brick layer, the active force producing because of expansion for absorbing self-baked charcoal brick layer;
Described low temperature tailor-tacking is stuck with paste layer and is adopted carbon element ramming material to make, compression ratio >=30% of described carbon element ramming material.
2. electric cooker structure according to claim 1, is characterized in that, described heat-insulation layer adopts high-alumina brick.
3. electric cooker structure according to claim 1, is characterized in that, described self-baked charcoal brick layer is structure as a whole.
4. electric cooker structure according to claim 1, is characterized in that, described protective layer adopts corundum coating to make.
5. a preparation method for electric furnace, is characterized in that, comprises the following steps:
Building heat insulation layer;
Make low temperature tailor-tacking and stick with paste layer, described low temperature tailor-tacking is stuck with paste layer and is connected heat-insulation layer and self-baked charcoal brick layer, the active force producing because of expansion for absorbing self-baked charcoal brick layer;
Make self-baked charcoal brick layer;
Make protective layer;
Wherein, described low temperature tailor-tacking is stuck with paste layer and is adopted carbon element ramming material to make, compression ratio >=30% of described carbon element ramming material.
6. preparation method according to claim 5, is characterized in that building by laying bricks or stones described heat-insulation layer, and described heat-insulation layer adopts high-alumina brick to build by laying bricks or stones and forms.
7. preparation method according to claim 5, while it is characterized in that making described low temperature tailor-tacking paste layer, is by solid described carbon element ramming material ramming.
8. preparation method according to claim 5, is characterized in that making described self-baked charcoal brick layer, and described self-baked charcoal brick layer adopts self-baked charcoal brick to build by laying bricks or stones and forms.
9. preparation method according to claim 5, is characterized in that making described protective layer, and described protective layer adopts the cast of corundum coating to form.
10. according to the preparation method described in claim 5-9 any one; it is characterized in that, after making described protective layer, also comprise baker step, described oven drying temperature is more than 800 DEG C; described furnace drying time is more than 24 hours, so that described self-baked charcoal brick layer forms integrative-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 |
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| Publication Number | Publication Date |
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| CN102645098A CN102645098A (en) | 2012-08-22 |
| CN102645098B true CN102645098B (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110040588.XA Expired - Fee Related CN102645098B (en) | 2011-02-18 | 2011-02-18 | Electric furnace structure and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 (2)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050254543A1 (en) * | 2004-05-13 | 2005-11-17 | Sgl Carbon Ag | Lining for carbothermic reduction furnace |
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2011
- 2011-02-18 CN CN201110040588.XA patent/CN102645098B/en not_active Expired - Fee Related
Patent Citations (2)
| 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 |
| 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 (3)
| Title |
|---|
| 曾正明.耐火保护涂料.《工业炉修理手册》.机械工业出版社,1998,第192页. * |
| 李兴波 等.自焙炭砖炉衬在大型矿热炉上的应用.《铁合金》.2010,第47卷(第5期),第18至20页. |
| 自焙炭砖炉衬在大型矿热炉上的应用;李兴波 等;《铁合金》;20101028;第47卷(第5期);第18至20页 * |
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| CN102645098A (en) | 2012-08-22 |
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