CN103290154A - Blast-furnace crucible capable of reducing lining erosion - Google Patents
Blast-furnace crucible capable of reducing lining erosion Download PDFInfo
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- CN103290154A CN103290154A CN2013101856236A CN201310185623A CN103290154A CN 103290154 A CN103290154 A CN 103290154A CN 2013101856236 A CN2013101856236 A CN 2013101856236A CN 201310185623 A CN201310185623 A CN 201310185623A CN 103290154 A CN103290154 A CN 103290154A
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- annular retaining
- retaining dam
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Abstract
The invention discloses a blast-furnace crucible capable of reducing lining erosion. The service life of the blast-furnace crucible is greatly prolonged. The blast-furnace crucible comprises a furnace body, wherein a fireproof lining is arranged on the inner wall of the furnace body; a tapping hole is formed in the side wall of the furnace body; an annular fireproof side wall dam is arranged on a furnace body side wall lining below the tapping hole; an annular fireproof furnace bottom dam is arranged on a furnace body bottom lining. According to the blast-furnace crucible, the annular side wall dam and the annular furnace bottom dam can effectively suppress the mechanical impact of molten iron circulating flow on a crucible lining, so that the elephant-foot-shaped erosion of the crucible lining can be reduced, the service life of the blast-furnace crucible is prolonged, and the production cost of an enterprise is saved.
Description
Technical field
The invention belongs to the blast furnace field, refer more particularly to and to make the blast furnace hearth that prolongs greatly 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 also not exclusively symmetrical, the cupola well sidewall liner of below, iron notch zone corrodes the most serious, the position of second section cooling stave of corresponding cupola well, 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, the major cause that generation resembles the erosion of pin shape is because there is molten iron circulation in the periphery of the dead burnt post of cupola well, 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 corroding at the sidewall liner of cupola well and the serious pin shape that resembles of liner appearance of cupola well sidewall and furnace bottom intersection.
Summary of the invention
The technical problem to be solved in the present invention 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 present invention 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, sidewall of the furnace body is provided with iron notch, be characterized in: the sidewall of the furnace body liner below the iron notch is provided with together fire-resistant sidewall annular retaining dam, and the bottom of furnace body liner is provided with refractory-lined ovens bottom annular retaining dam one.
Further, aforesaidly can alleviate the blast furnace hearth that liner corrodes, wherein: the baseplane on sidewall annular retaining dam is 300mm～1000mm to the distance H of the bottom surface of iron notch; The inner peripheral surface on furnace bottom annular retaining 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 retaining dam and furnace bottom annular retaining dam are built by laying by corundum-mullite and are formed.
Beneficial effect of the present invention: sidewall annular retaining dam and furnace bottom annular retaining dam can suppress molten iron circulation effectively to the mechanical shock of basque, 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 synoptic diagram that can alleviate the blast furnace hearth of liner erosion of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment the blast furnace hearth that can alleviate the liner erosion of the present invention is further described.
Embodiment 1.
Referring to shown in Figure 1, the blast furnace hearth that can alleviate the liner erosion of the present invention, comprise body of heater 4, be provided with refractory lining 7 at body of heater 4 inwalls, sidewall of the furnace body is provided with iron notch 1, sidewall of the furnace body liner below the iron notch 1 is provided with together fire-resistant sidewall annular retaining dam 6, and the bottom of furnace body liner is provided with refractory-lined ovens bottom annular retaining dam 3 one, and the baseplane on sidewall annular retaining dam 6 is 300mm to the distance H of the bottom surface of iron notch 1; The inner peripheral surface on furnace bottom annular retaining dam 3 is 300mm to the distance L of bottom of furnace body sidewall; Described sidewall annular retaining dam 6 and furnace bottom annular retaining dam 3 are built by laying by corundum-mullite and are formed.
Embodiment 2.
Referring to shown in Figure 1, the blast furnace hearth that can alleviate the liner erosion of the present invention, comprise body of heater 4, be provided with refractory lining 7 at body of heater 4 inwalls, sidewall of the furnace body is provided with iron notch 1, sidewall of the furnace body liner below the iron notch 1 is provided with together fire-resistant sidewall annular retaining dam 6, and the bottom of furnace body liner is provided with refractory-lined ovens bottom annular retaining dam 3 one, and the baseplane on sidewall annular retaining dam 6 is 1000mm to the distance H of the bottom surface of iron notch 1; The inner peripheral surface on furnace bottom annular retaining dam 3 is 1000mm to the distance L of bottom of furnace body sidewall; Described sidewall annular retaining dam 6 and furnace bottom annular retaining dam 3 are built by laying by corundum-mullite and are formed.
Referring to shown in Figure 1, the blast furnace hearth that can alleviate the liner erosion of the present invention, comprise body of heater 4, be provided with refractory lining 7 at body of heater 4 inwalls, sidewall of the furnace body is provided with iron notch 1, sidewall of the furnace body liner below the iron notch 1 is provided with together fire-resistant sidewall annular retaining dam 6, and the bottom of furnace body liner is provided with refractory-lined ovens bottom annular retaining dam 3 one, and the baseplane on sidewall annular retaining dam 6 is 600mm to the distance H of the bottom surface of iron notch 1; The inner peripheral surface on furnace bottom annular retaining dam 3 is 600mm to the distance L of bottom of furnace body sidewall; Described sidewall annular retaining dam 6 and furnace bottom annular retaining dam 3 are built by laying by corundum-mullite and are formed.
When dead burnt post is heavy when being sitting in furnace bottom, maximum stickiness shearing stress appears near the no coke space of cupola well wall, use corundum-mullite fusing point height, little, the good thermal shock of expanding, superperformance such as true specific gravity is low, creep resistance is high and chemical stability is good, build by laying sidewall annular retaining dam and furnace bottom annular retaining dam with corundum-mullite, increase the resistance that molten iron flows, the slow down speed of molten iron circulation suppresses molten iron circulation effectively to the erosion of blast furnace hearth liner.Sidewall annular retaining dam and furnace bottom annular retaining dam can suppress molten iron circulation effectively to the mechanical shock of basque, thereby can alleviate the erosion that basque resembles the 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, sidewall of the furnace body is provided with iron notch, it is characterized in that: the sidewall of the furnace body liner below the iron notch is provided with together fire-resistant sidewall annular retaining dam, and the bottom of furnace body liner is provided with refractory-lined ovens bottom annular retaining 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 retaining dam is 300mm～1000mm to the distance H of the bottom surface of iron notch; The inner peripheral surface on furnace bottom annular retaining 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 retaining dam and furnace bottom annular retaining dam are built by laying by corundum-mullite and are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310185623.6A CN103290154B (en) | 2013-05-20 | 2013-05-20 | Blast-furnace crucible capable of reducing lining erosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310185623.6A CN103290154B (en) | 2013-05-20 | 2013-05-20 | Blast-furnace crucible capable of reducing lining erosion |
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| CN103290154A true CN103290154A (en) | 2013-09-11 |
| CN103290154B CN103290154B (en) | 2014-12-31 |
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| CN201310185623.6A Active CN103290154B (en) | 2013-05-20 | 2013-05-20 | Blast-furnace crucible capable of reducing lining erosion |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621218Y2 (en) * | 1985-02-21 | 1987-01-13 | ||
| JPS6475612A (en) * | 1987-09-18 | 1989-03-22 | Nisshin Steel Co Ltd | Furnace bottom construction in blast furnace |
| JPH0578720A (en) * | 1991-09-25 | 1993-03-30 | Kawasaki Steel Corp | Method for preventing erosion of furnace bottom in blast furnace |
| CN201031229Y (en) * | 2006-11-24 | 2008-03-05 | 郑州纪翔耐材股份有限公司 | Anti-seep ceramic-cup-carbonaceous composite furnace bottom structure |
| CN203295526U (en) * | 2013-05-20 | 2013-11-20 | 江苏永钢集团有限公司 | Blast furnace hearth capable of reducing inner liner erosion |
-
2013
- 2013-05-20 CN CN201310185623.6A patent/CN103290154B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621218Y2 (en) * | 1985-02-21 | 1987-01-13 | ||
| JPS6475612A (en) * | 1987-09-18 | 1989-03-22 | Nisshin Steel Co Ltd | Furnace bottom construction in blast furnace |
| JPH0578720A (en) * | 1991-09-25 | 1993-03-30 | Kawasaki Steel Corp | Method for preventing erosion of furnace bottom in blast furnace |
| CN201031229Y (en) * | 2006-11-24 | 2008-03-05 | 郑州纪翔耐材股份有限公司 | Anti-seep ceramic-cup-carbonaceous composite furnace bottom structure |
| CN203295526U (en) * | 2013-05-20 | 2013-11-20 | 江苏永钢集团有限公司 | Blast furnace hearth capable of reducing inner liner erosion |
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| CN103290154B (en) | 2014-12-31 |
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Effective date of registration: 20190708 Address after: 215600 Yonglian Village, Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: Lian Feng Steel (Zhangjiagang) Co., Ltd. Address before: 215628 Yonglian Jiangsu Yonggang Group, Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: Jiangsu Yonggang Group Co., Ltd. |