CN202595166U - Hearth side wall inner lining - Google Patents
Hearth side wall inner lining Download PDFInfo
- Publication number
- CN202595166U CN202595166U CN 201220214932 CN201220214932U CN202595166U CN 202595166 U CN202595166 U CN 202595166U CN 201220214932 CN201220214932 CN 201220214932 CN 201220214932 U CN201220214932 U CN 201220214932U CN 202595166 U CN202595166 U CN 202595166U
- Authority
- CN
- China
- Prior art keywords
- lining body
- carbonaceous material
- material lining
- thermofin
- heat
- Prior art date
- 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.)
- Expired - Lifetime
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Blast Furnaces (AREA)
Abstract
The utility model relates to a hearth side wall inner lining. The hearth side wall inner lining with a heat-insulated interlayer can overcome the problems that the conventional hearth side wall inner lining is relatively large in thermal stress and heat loss, and short in service life. The hearth side wall inner lining disclosed by the utility model comprises a carbonaceous material lining body and an aluminum oxide (Al2O3) containing refractory material lining body, and is characterized in that a heat-insulated layer is arranged between the carbonaceous material lining body and the Al2O3 containing refractory material lining body. Preferably, the heat-insulated layer (3) is arranged partly or completely between the carbonaceous material lining body and the Al2O3 containing refractory material lining body. The heat-insulated layer is single layered or multilayered. The thickness of each layer of the heat-insulated layer is 5 mm to 50 mm. The heat-insulated layer is formed by a ceramic fiber board, a ceramic fibrofelt or a ceramic fiber blanket. And the thermal conductivity of the heat-insulated layer is not higher than that of the Al2O3 containing refractory material lining body.
Description
Technical field
The utility model relates to the side in molten metal liquid molten bath in the pyrotic smelting stove, particularly a kind of cupola well sidewall refractory lining that insulating sandwich is arranged in the cupola well of iron-smelting blast furnace.
Background technology
At present, the refractory lining at the cupola well position of iron-smelting blast furnace has two kinds of forms.A kind of full carbon type cupola well side for only adopting carbonaceous material to constitute, another kind of for having adopted carbonaceous material and having contained Al
2O
3Anti-material and Al
2O
3Anti-material is positioned at the compound cupola well side of carbonaceous material hot side side.Blast furnace hearth is high temperature, the high-pressure space that molten hot metal and slag that fluidised form is housed, coal gas, basic metal etc. are smelted product, receives physics, chemical erosion and high temperature and because the stress rupture that variation of temperature caused of these pyrotic smelting products around this spatial refractory lining.Though, the cupola well sidewall of modern blast furnace adopted quality preferably carbonaceous material, contain Al
2O
3Anti-material and advanced cooling technology and equipment, under operational condition meticulously, can the proper extension cupola well life-span, but still there is following main deficiency in the cupola well sidewall refractory lining of aforementioned forms.
When 1, only constituting the cupola well side by carbonaceous material; Though thermal conductivity is can be in the hot side formation temperature of carbonaceous material lower " viscous layer " such as micropore, ultramicropore brick fuel preferably; But this " viscous layer " is under the mobile and influence of temperature variation of melting slag iron; Can not stable existence, be in all the time flow and upgrade among.Thereby carbonaceous material still directly contacts with fluid slag iron unavoidably and receives mechanical erosion and physics and chemistry erosion.Compare with traditional carbon brick; Though microporous carbon brick, ultramicropore brick fuel have effect aspect the destruction of carbon brick body stoping liquid slag iron directly to infiltrate, alkali-metal infiltration and erosion, zinc metal infiltration carbon brick slit cause the destruction that the brick volumetric expansion causes and the chemical erosion of slag iron and brick fuel contact surface still to exist.
2, the hot side setting at cupola well sidewall carbonaceous material contains Al
2O
3The anti-material of pottery lining body the time; They have reduced the hot-face temperature of carbonaceous material in certain stove labour cycle; Eliminated molten hot metal and destroyed, avoided fluid slag iron the mechanical erosion of carbonaceous material and the destruction of chemical erosion and basic metal infiltration etc. to the inner infiltration of carbonaceous material.But,, contain Al because outside cooling effect and brick fuel have higher heat conductivity
2O
3The cold and hot surface temperature difference of anti-material lining body is bigger, and what cause thus is unfavorable for containing Al
2O
3The thermal stresses in anti-material lining body work-ing life is also bigger.
3, common, blast furnace uses the thermal conductivity of brick fuel to be 14w/m.k ~ 18w/m.k, is difficult to further raising.The carbonaceous material hot side contain Al
2O
3When the thickness of anti-material lining body was 300～400mm, thermal conductivity 2w/m.k～3w/m.k, the temperature of brick fuel hot side can reach 600～700 ℃.When the liner of cupola well sidewall only was made up of carbonaceous material, the hot-face temperature of carbonaceous material can reach more than 1000 ℃.The significant thermograde of cold and hot surface causes carbon brick to bear serious thermal stresses, thereby causes fractureing of carbon brick.
4, use the sidewall lining body of 1m general thickness usually, when only constituting the cupola well side by carbonaceous material, the heat flow density through sidewall can reach 8000w/m
2More than; Built by laying bricks or stones at the hot side of blacking and to have contained Al
2O
3When anti-material served as a contrast body, heat flow density also reached 5000～6000w/m
2It is thus clear that all there is bigger thermosteresis in the liner of these two kinds of forms, has both wasted energy also to be unfavorable for smelting and produced.
Because at present there is above-mentioned deficiency in the cupola well side of known two kinds of forms, satisfy the more and more longer life-span of modern blast furnace to require also with energy-saving and cost-reducing that needs further improve.
The utility model content
To deficiency of the prior art, the utility model provides a kind of cupola well side that insulating sandwich is arranged, and can overcome the problem that existing cupola well side thermal stresses is big, the brick fuel working temperature is higher, thermosteresis is big and work-ing life is not long.
In order to address the above problem, a kind of cupola well side of the utility model comprises carbonaceous material lining body and contains Al
2O
3Anti-material lining body, it is characterized in that: carbonaceous material serves as a contrast body and contains Al
2O
3Be provided with thermofin between the anti-material lining body.
Preferably, said carbonaceous material serves as a contrast body and contains Al
2O
3The all or part of thermofin that is provided with between the anti-material lining body.
Preferably, said thermofin is a single or multiple lift.
Preferably, the every layer thickness of said thermofin is 5mm-50mm.
Preferably, the thermal conductivity of said thermofin is not higher than the said Al of containing
2O
3The thermal conductivity of anti-material lining body.
More preferably, said thermofin is made up of ceramic beaverboard, ceramic fiber blanket or ceramic fiber blanket.
The cupola well side that insulating sandwich is arranged by such scheme enforcement; Thermofin has reduced the temperature of carbonaceous material hot side; Reduced the thermal stresses that carbonaceous material bore; Effectively stoped the infiltration of gaseous bases metal in carbonaceous material, greatly eliminated the harm that basic metal solidifies, enrichment caused in carbonaceous material.Simultaneously, thermofin has improved and has contained Al
2O
3The huyashi-chuuka (cold chinese-style noodles) temperature of anti-material lining body, reduced to contain Al
2O
3Anti-material serves as a contrast the cold and hot surface temperature difference and the thermal stresses of body, has reduced to contain Al
2O
3Anti-material lining body suffers the danger of heat collapse.Heat flow density through the cupola well side is minimized, and has reduced the blast furnace thermosteresis, has to be beneficial to smelt the effect of producing, saving energy and reduce the cost.Cupola well side structure secure in the utility model, implement easily, be a kind of be of value to prolong blast furnace campaign, energy-saving and cost-reducing useful improvement.
Description of drawings
Fig. 1 is for being served as a contrast body, thermofin, contained Al by carbonaceous material
2O
3The longitudinal plane structure synoptic diagram of the blast furnace hearth side that anti-material lining body constitutes.
Among the figure, 1 for containing Al
2O
3Anti-material lining body, 2 are carbonaceous material lining body, and 3 is thermofin, and 4 is furnace bottom refractory brick, and 5 is the furnace bottom carbon containing refractory, and 6 is the air port modular tile, and 7 is the cooling stave of cupola well sidewall.
Embodiment
Below in conjunction with accompanying drawing the utility model is done explanation further.
Referring to Fig. 1, the cupola well side of the utility model comprises: contain Al
2O
3Anti-material lining body 1, carbonaceous material lining body 2, thermofin 3, furnace bottom refractory brick 4, furnace bottom carbon containing refractory 5, the cooling stave 7 of air port modular tile 6 and cupola well sidewall.Carbonaceous material serves as a contrast body 2 and contains Al
2O
3Be provided with thermofin 3 between the anti-material lining body 1.
The main effect of thermofin: reduce the temperature of carbonaceous material lining body and the temperature difference of cold and hot surface, the carbonaceous material lining temperature stress that body bore is reduced, and has prolonged the work-ing life of carbonaceous material lining body; Can the hot-face temperature that carbonaceous material serves as a contrast body be controlled at below the alkali-metal temperature of solidification, avoid the gaseous bases metal deposition in carbonaceous material lining body, prolonged the work-ing life of carbonaceous material lining body; Improved and contained Al
2O
3The huyashi-chuuka (cold chinese-style noodles) temperature of anti-material lining body, reduced to contain Al
2O
3Anti-material serves as a contrast the cold and hot surface temperature difference and the thermal stresses of body, has reduced to contain Al
2O
3Anti-material lining body suffers the danger of heat collapse; Heat flow density through the cupola well side is minimized, and has reduced the blast furnace thermosteresis, has saved the energy.
Preferably, said carbonaceous material serves as a contrast body and contains Al
2O
3The all or part of thermofin that is provided with between the anti-material lining body.Carbonaceous material serves as a contrast body and contains Al
2O
3All being provided with thermofin between the anti-material lining body is meant carbonaceous material lining body and contains Al
2O
3In the gap between the anti-material lining body thermofin is arranged all; Carbonaceous material serves as a contrast body and contains Al
2O
3Part is provided with thermofin and is meant that carbonaceous material serves as a contrast body and contains Al between the anti-material lining body
2O
3In the part gap between the anti-material lining body thermofin is arranged, promptly thermofin is discontinuous setting.When part is provided with thermofin, have the lower advantage of expense, thermosteresis is big, still temperature is higher, thermal stresses is bigger for part carbonaceous material lining body but have, and part contains Al
2O
3The also bigger deficiency of thermal stresses of anti-material lining body.During enforcement, can be chosen as whole settings or thermofin partly is set according to practical situation.
Preferably, said thermofin is a single or multiple lift.The every layer thickness of said thermofin is 5mm to 50mm.When thermofin adopted more than one deck, each layer was upwards stacked in the footpath of blast furnace.For example, the gap is 20mm, and can adopt a layer thickness is the wad of 20mm or to adopt two layers of thickness be the wad of 10mm.When adopting two layers of thickness to be the wad of 10mm, two-layer will upwards the stack in the footpath of blast furnace placed.
Preferably, the thermal conductivity of said thermofin is not higher than the said Al of containing
2O
3The thermal conductivity of anti-material lining body.So that make thermofin that better insulative properties is provided.Thermofin can adopt that present society is known, ceramic beaverboard of satisfying the cupola well environment, ceramic fiber blanket, ceramic fiber blanket etc. are made.
Claims (7)
1. a cupola well side comprises carbonaceous material lining body (2) and contains Al
2O
3Anti-material lining body (1), it is characterized in that: carbonaceous material serves as a contrast body (2) and contains Al
2O
3Be provided with thermofin (3) between the anti-material lining body (1).
2. cupola well side according to claim 1 is characterized in that: said carbonaceous material serves as a contrast body (2) and contains Al
2O
3All be provided with thermofin (3) between the anti-material lining body (1).
3. cupola well side according to claim 1 is characterized in that: said carbonaceous material serves as a contrast body (2) and contains Al
2O
3Part is provided with thermofin (3) between the anti-material lining body (1).
4. according to the cylinder side of the said stove of claim 1, it is characterized in that: said thermofin is a single or multiple lift.
5. cupola well side according to claim 4 is characterized in that: the every layer thickness of said thermofin is 5mm-50mm.
6. cupola well side according to claim 1 is characterized in that: the thermal conductivity of said thermofin is not higher than the said Al of containing
2O
3The thermal conductivity of anti-material lining body.
7. according to any described cupola well side of claim 1 to 6, it is characterized in that: said thermofin is made up of ceramic beaverboard, ceramic fiber blanket or ceramic fiber blanket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220214932 CN202595166U (en) | 2012-05-14 | 2012-05-14 | Hearth side wall inner lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220214932 CN202595166U (en) | 2012-05-14 | 2012-05-14 | Hearth side wall inner lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202595166U true CN202595166U (en) | 2012-12-12 |
Family
ID=47312720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220214932 Expired - Lifetime CN202595166U (en) | 2012-05-14 | 2012-05-14 | Hearth side wall inner lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202595166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421916A (en) * | 2012-05-14 | 2013-12-04 | 明光瑞尔非金属材料有限公司 | Hearth side-wall inner lining |
-
2012
- 2012-05-14 CN CN 201220214932 patent/CN202595166U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421916A (en) * | 2012-05-14 | 2013-12-04 | 明光瑞尔非金属材料有限公司 | Hearth side-wall inner lining |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ruier Non-Metal Mateial Co., Ltd., Beijing Assignor: Mingguang Riel Non-metallic Materials Co., Ltd. Contract record no.: 2013990000906 Denomination of utility model: Hearth side-wall inner lining Granted publication date: 20121212 License type: Exclusive License Record date: 20131231 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ruier Non-Metal Mateial Co., Ltd., Beijing Assignor: Mingguang Riel Non-metallic Materials Co., Ltd. Contract record no.: 2013990000906 Denomination of utility model: Hearth side-wall inner lining Granted publication date: 20121212 License type: Exclusive License Record date: 20131231 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |