CN104988263A - Blast furnace cooling wall - Google Patents
Blast furnace cooling wall Download PDFInfo
- Publication number
- CN104988263A CN104988263A CN201510466194.9A CN201510466194A CN104988263A CN 104988263 A CN104988263 A CN 104988263A CN 201510466194 A CN201510466194 A CN 201510466194A CN 104988263 A CN104988263 A CN 104988263A
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- steel pipe
- cooling stave
- cooling wall
- blast furnace
- composite bed
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Blast Furnaces (AREA)
Abstract
The invention discloses a blast furnace cooling wall which comprises a cooling wall body, a dovetail groove formed in the cooling wall body and a plurality of steel pipes cast in the cooling wall body. The steel pipes comprise steel pipe bodies, steel pipe inlets and steel pipe outlets. The steel pipe inlets and the steel pipe outlets stretch out of the cooling wall bodies. Copper compound layers are arranged on the surfaces of the steel pipe bodies and are made of pure-copper materials. The blast furnace cooling wall has good heat transfer performance and damage-resisting performance, the service life of the cooling wall is prolonged, and the production cost is saved.
Description
Technical field
The present invention relates to blast furnace refrigerating unit, be specifically related to a kind of blast furnace cooling stave.
Background technology
Cooling stave is blast furnace cooling apparatus, and its Main Function is protection furnace shell, cooling and support refractory materials and maintains reasonable furnace.Its principle of work is cooling furnace lining or melting slag iron, forms slag crust, finally by the recirculated cooling water in water pipe, heat is discharged out of the furnace.Its primary structure is an approximate rectangular parallelepiped metal construction, and in cooling stave body, be consolidated with water pipe, water pipe is that straight line is arranged side by side or snakelike.Cooling stave is installed on last furnace shell inner face, and water pipe passes furnace shell.Water coolant or other medium is passed in water pipe when blast fumance.
Structure and the feature of the cooling stave of current application are as follows:
1. cast-iron cooling wall
Containing the material such as gray iron, spheroidal graphite cast iron; Advantage is cheap, can manufacture more complicated structure; Shortcoming is that cooling performance is poor, plasticity is poor, intensity is low, the life-span is short;
2. cast steel cooling wall
There are cast tube and boring two kinds of structures; Advantage is that cost is moderate, plasticity is high compared with will the getting well of cast iron, intensity; Cooling performance is moderate, and the life-span is longer than cast-iron cooling wall but is shorter than copper cooling wall; Shortcoming be manufacture more complicated;
3. copper cooling wall
There are casting and rolling two kinds of structures; Advantage is good cooling results, plasticity is good, the life-span is long; Shortcoming is that intensity is low, cost is high.
The failure mode of cast-iron cooling wall is mainly: produce fine crack---crack propagation---penetrating crack---water pipe scaling loss that cooling stave body comes off---water pipe is exposed---.
During cooling stave casting, under the condition of high temperature and temperature variation, cooling stave hot side produces distortion and larger stress.Water tube surfaces generation carburization phenomena when contacting with water pipe for preventing molten iron, water pipe is become fragile and cracks and rupture, usual way is in water pipe appearance coating " antiseepage carbon-coating ", 2mm should be not more than by " antiseepage carbon-coating " thickness, water pipe after casting compares loose with between cooling stave body and thermal conductivity is very little, produces the gap of the 0.1mm that has an appointment between cooling stave body and pipe outer wall.During use, this gap and antiseepage carbon-coating can produce very large thermal resistance, cause the heat-transfer capability between water pipe and cooling stave body greatly to reduce, and when producing, the temperature of cooling stave body hot side is higher, easily crack and crack propagation velocity very fast.
The reason that cast steel and cast-iron cooling wall lost efficacy is: produce fine crack---crack propagation---penetrating crack---water pipe fracture---water pipe scaling loss.If technology controlling and process is bad when casting, also can produces gap between water pipe and wall body, increasing thermal resistance, reduce cooling power.
Publication number is 200996792, publication date is the cast-iron cooling wall that the utility model patent on December 26th, 2007 discloses the resistance of a kind of Novel low, its major technique is: the water pipe in cooling stave body is made up of copper pipe, improves the capacity of heat transmission between water pipe and cooling stave body; But the shortcoming existed is when cooling stave body generation penetrating crack and moderate finite deformation, because copper pipe intensity is very low, easy drawing crack.And the fusing point of copper is far below the fusing point of iron, during casting, easily there is corrode or copper pipe burn through defect.
Summary of the invention
The object of the present invention is to provide a kind of blast furnace cooling stave with good heat transfer property and resistant to damage performance.
The present invention is achieved in that
A kind of blast furnace cooling stave, comprise the dovetail-indent on cooling stave body, cooling stave body, be cast into the intrinsic many steel pipes of cooling stave (described steel pipe pre-bending becomes the shape of needs), described steel pipe comprises steel pipe body, steel pipe import and steel pipe outlet, and cooling stave body is stretched out in described steel pipe import and steel pipe outlet;
The surface of described steel pipe body is provided with copper composite bed;
Described copper composite bed is made up of pure copper material.
Further scheme is: described cooling stave body is made up of cast steel or cast iron quality.
Further scheme is: described copper composite bed is combined into as a whole with molten state and steel pipe in advance.
Further scheme is: the thickness of described copper composite bed is greater than 3mm.
In the present invention, the copper composite bed be first made up of pure copper material at outside surface consolidation one deck of steel pipe, and then steel pipe is cast into cooling stave body, copper composite bed and steel pipe are combined closely, and cooling stave body is cast rear copper composite bed and is close to cooling stave body and steel pipe, cooling stave body and steel pipe is separated completely, solve the problem in water pipe and cooling stave ontological existence gap in the past, also thus improve thermal conductivity, avoid the generation of cooling stave body penetrating crack, improve work-ing life.The end (steel pipe import, steel pipe outlet) making steel pipe expose cooling stave body does not cover copper composite bed, decreases the usage quantity of fine copper, has saved cost.Copper composite bed is designed to the thickness being greater than 3mm, is to better protect steel pipe, makes steel pipe not damaged.
In the present invention, the cross section of described steel pipe can be ellipse, Long Circle or other abnormity.Described cooling stave body has multiple dovetail-indent be arranged in parallel, and this dovetail-indent is arranged transversely, the width bottom the cell body of described dovetail-indent is greater than the width of notch.
In the present invention, when casting, pass to heat-eliminating medium, ensure that the copper composite bed of combining closely with steel pipe is not fused that (thermal conductivity of copper is fine, pass to suitable heat-eliminating medium when casting in steel pipe can ensure be not melted with the copper composite bed surface of molten iron or steel contacts or burn, copper itself also can not produce carburization phenomena).There is a fine and close copper protective layer between cooling stave body and steel pipe, protection steel pipe can not produce carburization phenomena, makes steel pipe substantially maintain original intensity and plasticity, be subject to certain pulling force, shearing force and distortion time can not rupture.After cast molding, copper composite bed outside surface and cooling stave body are metallurgical binding, conduct heat without any obstacle, good heat-transfer.The thermal resistance of this kind of structure is lower by about 50% than the thermal resistance of the cooling stave of existing band " antiseepage carbon-coating ", greatly can reduce the temperature of cooling stave hot side, thus reduces generation and the expansion of cooling stave hot side crackle.When cooling stave body produces penetrating crack, crack propagation also can be stopped to copper composite bed place, because the ductility of copper is very good, ftractures hardly, avoids cooling stave body generation crackle and can continue to expand the generation making steel pipe cracking phenomena.When cooling stave body generation moderate finite deformation, because the intensity of copper is very low, will there is Relative sliding, dislocation, distortion in copper composite bed under lower stress, and the tensile stress and the shearing stress that pass to steel pipe are just less, much smaller than the tensile strength of steel pipe, reduce the probability of steel pipe damage.Copper composite bed is after generation slippage, dislocation, distortion, and too large change can not occur its properties, is still close to cooling stave body and steel pipe, can not produce space.
The present invention has good heat transfer property and resistant to damage performance, improves the work-ing life of cooling stave, has saved cost for producing.
Accompanying drawing explanation
Fig. 1 is cooling stave front schematic view;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is C portion enlarged diagram in Fig. 2;
Fig. 4 is steel pipe before casting and the structural representation of copper composite bed.
In figure: 1, cooling stave body, 2, steel pipe, 2-1 steel pipe body, the import of 2-2 steel pipe, 2-3, steel pipe export, and 3, copper composite bed, 4, dovetail-indent.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
See Fig. 1-Fig. 4, a kind of blast furnace cooling stave, comprise multiple dovetail-indent 4, the many steel pipes 2 be cast in cooling stave body 1 be arranged in parallel be made up of cast steel or cast iron quality on cooling stave body 1, cooling stave body 1, described steel pipe 2 comprises steel pipe body 2-1, steel pipe import 2-2 and steel pipe outlet 2-3, described steel pipe body 2-1, steel pipe import 2-2 and steel pipe outlet 2-3 entirety is U-shaped, and described steel pipe import 2-2 and steel pipe outlet 2-3 stretches out cooling stave body 1; The surface of described steel pipe body 2-1 is provided with the copper composite bed 3 be made up of pure copper material;
The thickness of described copper composite bed 3 is 5mm.
During making, the copper composite bed 3 (namely copper composite bed 3 is combined into as a whole with molten state and steel pipe 2 in advance) be first made up of pure copper material at outside surface consolidation one deck of steel pipe 2, and then the steel pipe 2 with copper composite bed 3 is cast in cooling stave body 1, make copper composite bed 3 and steel pipe 2, cooling stave body 1 is combined closely, and cooling stave body 1 and steel pipe 2 are separated completely, solve water pipe and cooling stave body 1 in the past and there is the problem in gap, thus improve thermal conductivity, avoid the scaling loss causing water pipe of cooling stave body 1 penetrating crack, improve the work-ing life of cooling stave.The end (steel pipe import, steel pipe outlet) making steel pipe 2 expose cooling stave body 1 does not cover copper composite bed 3, decreases the usage quantity of fine copper, has saved cost.
Claims (4)
1. a blast furnace cooling stave, comprise the dovetail-indent on cooling stave body, cooling stave body, be cast into the intrinsic many steel pipes of cooling stave, it is characterized in that: described steel pipe comprises steel pipe body, steel pipe import and steel pipe outlet, cooling stave body is stretched out in described steel pipe import and steel pipe outlet;
The surface of described steel pipe body is provided with copper composite bed;
Described copper composite bed is made up of pure copper material.
2. blast furnace cooling stave as claimed in claim 1, is characterized in that: described cooling stave body is made up of cast steel or cast iron quality.
3. blast furnace cooling stave as claimed in claim 1, is characterized in that: described copper composite bed is combined into as a whole with molten state and steel pipe in advance.
4. blast furnace cooling stave as claimed in claim 1, is characterized in that: the thickness of described copper composite bed is greater than 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510466194.9A CN104988263A (en) | 2015-07-31 | 2015-07-31 | Blast furnace cooling wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510466194.9A CN104988263A (en) | 2015-07-31 | 2015-07-31 | Blast furnace cooling wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104988263A true CN104988263A (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510466194.9A Pending CN104988263A (en) | 2015-07-31 | 2015-07-31 | Blast furnace cooling wall |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588314A (en) * | 2018-04-03 | 2018-09-28 | 莱芜市天铭冶金设备有限公司 | A kind of pre- poling cast-iron cooling wall of high-efficiency long-life and its manufacturing process |
| CN115820959A (en) * | 2022-12-12 | 2023-03-21 | 中冶南方工程技术有限公司 | Construction method for inlaying bricks on cooling wall in blast furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002081757A1 (en) * | 2001-04-05 | 2002-10-17 | Paul Wurth S.A. | Cooling plate for a metallurgical furnace and method for manufacturing such a cooling plate |
| CN1615371A (en) * | 2002-01-16 | 2005-05-11 | 保尔·沃特公司 | Cooling plate for a metallurgical furnace and method for manufacturing such a cooling plate |
| CN201313904Y (en) * | 2008-12-18 | 2009-09-23 | 张伟 | Composite copper steel cooling stick |
| CN202595167U (en) * | 2012-05-04 | 2012-12-12 | 绍兴曙光机械有限公司 | Thin-type cooling wall of cast copper blast furnace |
| CN202730153U (en) * | 2012-07-13 | 2013-02-13 | 武汉钢铁(集团)公司 | Copper cooling wall with good cooling effect and combined plate and wall for furnace bosh of blast furnace |
| CN203715654U (en) * | 2013-12-11 | 2014-07-16 | 江苏联兴成套设备制造有限公司 | Double-metal reinforced cooling wall with copper matrix with internal steel pipe and external steel plate |
-
2015
- 2015-07-31 CN CN201510466194.9A patent/CN104988263A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002081757A1 (en) * | 2001-04-05 | 2002-10-17 | Paul Wurth S.A. | Cooling plate for a metallurgical furnace and method for manufacturing such a cooling plate |
| CN1615371A (en) * | 2002-01-16 | 2005-05-11 | 保尔·沃特公司 | Cooling plate for a metallurgical furnace and method for manufacturing such a cooling plate |
| CN201313904Y (en) * | 2008-12-18 | 2009-09-23 | 张伟 | Composite copper steel cooling stick |
| CN202595167U (en) * | 2012-05-04 | 2012-12-12 | 绍兴曙光机械有限公司 | Thin-type cooling wall of cast copper blast furnace |
| CN202730153U (en) * | 2012-07-13 | 2013-02-13 | 武汉钢铁(集团)公司 | Copper cooling wall with good cooling effect and combined plate and wall for furnace bosh of blast furnace |
| CN203715654U (en) * | 2013-12-11 | 2014-07-16 | 江苏联兴成套设备制造有限公司 | Double-metal reinforced cooling wall with copper matrix with internal steel pipe and external steel plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588314A (en) * | 2018-04-03 | 2018-09-28 | 莱芜市天铭冶金设备有限公司 | A kind of pre- poling cast-iron cooling wall of high-efficiency long-life and its manufacturing process |
| CN115820959A (en) * | 2022-12-12 | 2023-03-21 | 中冶南方工程技术有限公司 | Construction method for inlaying bricks on cooling wall in blast furnace |
| CN115820959B (en) * | 2022-12-12 | 2024-05-24 | 中冶南方工程技术有限公司 | Brick embedding construction method for cooling wall in blast furnace |
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Application publication date: 20151021 |