CN203295526U - Blast furnace hearth capable of reducing inner liner erosion - Google Patents
Blast furnace hearth capable of reducing inner liner erosion Download PDFInfo
- Publication number
- CN203295526U CN203295526U CN2013202735465U CN201320273546U CN203295526U CN 203295526 U CN203295526 U CN 203295526U CN 2013202735465 U CN2013202735465 U CN 2013202735465U CN 201320273546 U CN201320273546 U CN 201320273546U CN 203295526 U CN203295526 U CN 203295526U
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- sidewall
- blast furnace
- annular gear
- furnace
- furnace body
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Abstract
The utility model discloses a blast furnace hearth capable of lightening inner liner erosion, of which the service life is greatly prolonged. The blast furnace hearth comprises a furnace body, wherein a fire-proof inner liner is arranged on the inner wall of the furnace body; a tap hole is formed in one side wall of the furnace body; a fire-proof side wall ring-shaped baffle dam is arranged on an inner liner on the side wall of the furnace body below the tap hole; a fire-proof stove bottom ring-shaped baffle dam is arranged on an inner liner at the bottom of the furnace body. The blast furnace hearth has the advantages that the side wall ring-shaped baffle dam and the stove bottom ring-shaped baffle dam can effectively inhibit the mechanical impact on the hearth inner liner by molten iron circulation, so that the elephant foot shaped erosion of the hearth inner liner can be relieved, the service life of the blast furnace hearth can be prolonged, and the production cost of the enterprise is reduced.
Description
Technical field
The utility model belongs to the blast furnace field, refers more particularly to and can make the blast furnace hearth that greatly extends work-ing life.
Background technology
Resembling the erosion of pin shape is that modern blast furnace cupola well bottom lining corrodes topmost erosion type, it is characterized in that liner profile of erosion at cupola well sidewall and furnace bottom intersection is resembles the pin shape, namely the liner at cupola well sidewall and furnace bottom intersection corrodes seriously, and encroachment line prolongs to cupola well sidewall and the expansion of furnace bottom periphery; The encroachment line in blast furnace hearth and bottom longitudinal section is full symmetric not, the cupola well sidewall liner of below, iron notch zone corrodes the most serious, the position of corresponding cupola well second segment cooling stave, cupola well sidewall liner corrodes even more serious, the not enough 300mm of cupola well sidewall residue brick fuel thickness, even cause the blast furnace hearth sidewall to burn.Above-mentioned erosion is huge to the harm of the sidewall of blast furnace hearth and furnace bottom, is the restriction principal element of blast furnace campaign.
Find after deliberation, it is that periphery due to the dead burnt post of cupola well exists molten iron circulation that generation resembles major cause that the pin shape corrodes, when blast furnace casting, molten iron flows at the cupola well periphery in the form of a ring along dead burnt post periphery, particularly when the more shallow and dead burnt post liquid permeability of cupola well ladle heel layer depth is bad, the heavy furnace bottom that is sitting in of dead burnt post, molten iron circulation is to the sidewall of cupola well and the souring aggravation at cupola well sidewall and position, furnace bottom boundary, below the iron notch medullary ray, cause occurring that at the sidewall liner of cupola well and the liner of cupola well sidewall and furnace bottom intersection the serious pin shape that resembles corrodes.
The utility model content
The technical problems to be solved in the utility model is: provide a kind of pin shape that resembles that can alleviate basque to corrode, the blast furnace hearth that increases the service life.
For solving the problems of the technologies described above, the utility model has adopted following technical scheme.
Can alleviate the blast furnace hearth that liner corrodes, comprise body of heater, be provided with refractory lining at inboard wall of furnace body, be provided with iron notch on sidewall of the furnace body, be characterized in: be lining with in the sidewall of the furnace body below iron notch and be provided with together fire-resistant sidewall annular gear dam, be lining with in bottom of furnace body and be provided with refractory-lined ovens bottom annular gear dam one.
Further, aforesaidly can alleviate the blast furnace hearth that liner corrodes, wherein: the baseplane on sidewall annular gear dam is 300mm～1000mm to the distance H of the bottom surface of iron notch; The inner peripheral surface on furnace bottom annular gear dam is 300mm～1000mm to the distance L of bottom of furnace body sidewall.
Further, the aforesaid blast furnace hearth that can alleviate the liner erosion, wherein: described sidewall annular gear dam and furnace bottom annular gear dam are built by laying and are formed by corundum-mullite.
The beneficial effects of the utility model: sidewall annular gear dam and furnace bottom annular gear dam can suppress the mechanical shock of molten iron circulation to basque effectively, thereby can alleviate the erosion that resembles the pin shape of basque, improve the work-ing life of blast furnace hearth, saved the production cost of enterprise.
Description of drawings
Fig. 1 is the sectional structure schematic diagram that can alleviate the blast furnace hearth of liner erosion described in the utility model.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the blast furnace hearth that can alleviate the liner erosion described in the utility model is further described.
Embodiment 1.
Shown in Figure 1, the blast furnace hearth that can alleviate the liner erosion described in the utility model, comprise body of heater 4, be provided with refractory lining 7 at body of heater 4 inwalls, be provided with iron notch 1 on sidewall of the furnace body, be lining with in sidewall of the furnace body below iron notch 1 and be provided with together fire-resistant sidewall annular gear dam 6, be lining with in bottom of furnace body and be provided with refractory-lined ovens bottom annular gear dam 3 one, the baseplane on sidewall annular gear dam 6 is 300mm to the distance H of the bottom surface of iron notch 1; The inner peripheral surface on furnace bottom annular gear dam 3 is 300mm to the distance L of bottom of furnace body sidewall; Described sidewall annular gear dam 6 and furnace bottom annular gear dam 3 are built by laying and are formed by corundum-mullite.
Embodiment 2.
Shown in Figure 1, the blast furnace hearth that can alleviate the liner erosion described in the utility model, comprise body of heater 4, be provided with refractory lining 7 at body of heater 4 inwalls, be provided with iron notch 1 on sidewall of the furnace body, be lining with in sidewall of the furnace body below iron notch 1 and be provided with together fire-resistant sidewall annular gear dam 6, be lining with in bottom of furnace body and be provided with refractory-lined ovens bottom annular gear dam 3 one, the baseplane on sidewall annular gear dam 6 is 1000mm to the distance H of the bottom surface of iron notch 1; The inner peripheral surface on furnace bottom annular gear dam 3 is 1000mm to the distance L of bottom of furnace body sidewall; Described sidewall annular gear dam 6 and furnace bottom annular gear dam 3 are built by laying and are formed by corundum-mullite.
Shown in Figure 1, the blast furnace hearth that can alleviate the liner erosion described in the utility model, comprise body of heater 4, be provided with refractory lining 7 at body of heater 4 inwalls, be provided with iron notch 1 on sidewall of the furnace body, be lining with in sidewall of the furnace body below iron notch 1 and be provided with together fire-resistant sidewall annular gear dam 6, be lining with in bottom of furnace body and be provided with refractory-lined ovens bottom annular gear dam 3 one, the baseplane on sidewall annular gear dam 6 is 600mm to the distance H of the bottom surface of iron notch 1; The inner peripheral surface on furnace bottom annular gear dam 3 is 600mm to the distance L of bottom of furnace body sidewall; Described sidewall annular gear dam 6 and furnace bottom annular gear dam 3 are built by laying and are formed by corundum-mullite.
When dead burnt post is heavy while being sitting in furnace bottom, maximum stickiness shearing stress appear near the cupola well wall without in the coke space, the superperformances such as application corundum-mullite fusing point is high, it is little to expand, good thermal shock, true specific gravity is low, creep resistance is high and chemical stability is good, build by laying sidewall annular gear dam and furnace bottom annular gear dam with corundum-mullite, increase the resistance of molten iron flow, the slow down speed of molten iron circulation, suppress the erosion of molten iron circulation to the blast furnace hearth liner effectively.Sidewall annular gear dam and furnace bottom annular gear dam can suppress the mechanical shock of molten iron circulation to basque effectively, thereby can alleviate basque, resemble the erosion of pin shape, have improved the work-ing life of blast furnace hearth, have saved the production cost of enterprise.
Claims (3)
1. can alleviate the blast furnace hearth that liner corrodes, comprise body of heater, be provided with refractory lining at inboard wall of furnace body, be provided with iron notch on sidewall of the furnace body, it is characterized in that: be lining with in the sidewall of the furnace body below iron notch and be provided with together fire-resistant sidewall annular gear dam, be lining with in bottom of furnace body and be provided with refractory-lined ovens bottom annular gear dam one.
2. according to claim 1ly can alleviate the blast furnace hearth that liner corrodes, it is characterized in that: the baseplane on sidewall annular gear dam is 300mm～1000mm to the distance H of the bottom surface of iron notch; The inner peripheral surface on furnace bottom annular gear dam is 300mm～1000mm to the distance L of bottom of furnace body sidewall.
3. according to claim 1 and 2ly can alleviate the blast furnace hearth that liner corrodes, it is characterized in that: described sidewall annular gear dam and furnace bottom annular gear dam are built by laying and are formed by corundum-mullite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202735465U CN203295526U (en) | 2013-05-20 | 2013-05-20 | Blast furnace hearth capable of reducing inner liner erosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202735465U CN203295526U (en) | 2013-05-20 | 2013-05-20 | Blast furnace hearth capable of reducing inner liner erosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203295526U true CN203295526U (en) | 2013-11-20 |
Family
ID=49571556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202735465U Withdrawn - After Issue CN203295526U (en) | 2013-05-20 | 2013-05-20 | Blast furnace hearth capable of reducing inner liner erosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203295526U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290154A (en) * | 2013-05-20 | 2013-09-11 | 江苏永钢集团有限公司 | Blast-furnace crucible capable of reducing lining erosion |
| WO2021129613A1 (en) * | 2019-12-24 | 2021-07-01 | 中冶南方工程技术有限公司 | Blast furnace bottom structure |
-
2013
- 2013-05-20 CN CN2013202735465U patent/CN203295526U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290154A (en) * | 2013-05-20 | 2013-09-11 | 江苏永钢集团有限公司 | Blast-furnace crucible capable of reducing lining erosion |
| CN103290154B (en) * | 2013-05-20 | 2014-12-31 | 江苏永钢集团有限公司 | Blast-furnace crucible capable of reducing lining erosion |
| WO2021129613A1 (en) * | 2019-12-24 | 2021-07-01 | 中冶南方工程技术有限公司 | Blast furnace bottom structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131120 Effective date of abandoning: 20141231 |
|
| RGAV | Abandon patent right to avoid regrant |