CN207998619U - A kind of throttle-type main trough of blast furnace heat shield - Google Patents
A kind of throttle-type main trough of blast furnace heat shield Download PDFInfo
- Publication number
- CN207998619U CN207998619U CN201820418129.8U CN201820418129U CN207998619U CN 207998619 U CN207998619 U CN 207998619U CN 201820418129 U CN201820418129 U CN 201820418129U CN 207998619 U CN207998619 U CN 207998619U
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- China
- Prior art keywords
- heat shield
- blast furnace
- metal shell
- restriction
- castable refractory
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Abstract
The utility model is related to blast furnace technical field of auxiliary equipment in smelting iron, specifically provide a kind of throttle-type main trough of blast furnace heat shield, including the metal shell that section is U-shaped, metal shell external welding well word reinforcing rib, metal shell inner wall fixes multiple herringbone grasps, and it is fixed on metal shell inner wall equipped with castable refractory lining, herringbone grasp is embedded into castable refractory lining, castable refractory lining inner wall is equipped with the restriction of protrusion, and restriction is arranged in the side that heat shield is connect with blast furnace iron notch.The utility model controls the jet velocity of liquid slag, iron by pressure, reduces kinetic energy and hydraulic coupling, is often burnt with solving heat shield in the prior art, or even cause the blast furnace iron notch problem of not blocking up.
Description
Technical field
The utility model is related to blast furnace technical field of auxiliary equipment in smelting iron, and specifically provide a kind of main iron of throttle-type blast furnace
Ditch heat shield.
Background technology
Currently, well known super-huge blast furnace is tapped a blast furnace using iron storage type sow, blast furnace normally taps a blast furnace under state, main iron
A heat shield must be buckled above ditch, to protect the casthouse equipment around sow.In addition, heat shield is for stokehold operation people
Member has the function of preventing from molten iron heat radiation and prevent slag iron from splashing to scald.Because having certain pressure in blast furnace, therefore work as slag
Iron is ejected from tapping hole into when sow to be washed away at radiation horn shape with certain kinetic energy and hydraulic coupling first
Heat shield inner wall falls the castable refractory lining at position around iron spot, cause heat shield fall around iron spot wash away corrode it is especially tight
Weight, then slag iron stream goes downstream, and then washes away and corrode entire heat shield.
In addition, due to the molten iron gone out from blast furnace iron notch during tapping a blast furnace, sow inner wall is similarly formed huge
Impact force causes sow inner wall impact erosion serious, and sow heat shield is buckled on sow, sow inner lining refractory
After washing away erosion, sow width is caused to increase, heat shield inner wall refractory material is directly contacted with slag iron, generates chemical attack.
In addition, it is frequent to cause sow heat shield to replace, increase spare parts cost, if the heat shield, which is burnt, falls into sow
It is interior, Hydraulic clay gun running orbit will be blocked, blast furnace iron notch is caused not block up, cause high-temperature molten slag, iron spill into iron flask it
Outside, or even iron flask vehicle and railway are burnt.
In addition, after burning iron flask vehicle, rail is welded in the residual molten iron trickling to ground of molten condition, iron flask vehicle is caused to slide down,
It forces blast furnace staying to carry out process accident, not only affects furnace processor and coke ratio, be also consumed by a large amount of manpower and materials, cause weight
Big economic loss.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of throttle-type main trough of blast furnace heat shield, passes through
The jet velocity for forcing control liquid slag, iron, reduces kinetic energy and hydraulic coupling, is often burnt with solving heat shield in the prior art,
Even cause the blast furnace iron notch problem of not blocking up.
The utility model is realized in this way a kind of throttle-type main trough of blast furnace heat shield, including section are the metal of U-shaped
Shell, metal shell external welding well word reinforcing rib, metal shell inner wall fixes multiple herringbone grasps, and is served as a contrast equipped with castable refractory
Layer is fixed on metal shell inner wall, and herringbone grasp is embedded into castable refractory lining, and castable refractory lining inner wall is equipped with
The restriction of protrusion, restriction are arranged in the side that heat shield is connect with blast furnace iron notch.
Further, two lifting earrings are symmetrically fixed in the metal shell top surface.
Further, the metal shell is 12mm steel plate shells.
Further, the long 4800mm of the heat shield, width 2780mm, high 1212mm;The castable refractory liner layer thickness
For 200mm;The restriction apart from heat shield at a distance from one end that blast furnace iron notch connects is 1100mm, restriction width is
1500mm。
Compared with prior art, the utility model has the advantage of:
1, basis"Hydro-mechanics"For Throttle Principle it is found that generating pressure drop when fluid passes through restriction, this practicality is new
The refractory material that type falls position near iron spot is thickeied than original, and forms the restriction of 1500mm wide, and effect is to work as to melt injection
Slag, Tie Tong generate pressure drop when crossing the restriction, cause the kinetic energy rejection of liquid slag iron, make liquid slag iron in sow heat shield
The hydraulic impact power of wall weakens, to reduce the erosion of washing away to sow heat shield inner wall, therefore the sow heat shield anti-slag
Iron scouring capability is extremely strong;
2, the structure in the utility model controls the movement velocity of liquid slag, iron by pressure, reduces kinetic energy and hydraulic coupling,
Main trough of blast furnace heat shield is avoided, caused heavy economic losses is often burnt during tapping a blast furnace;
3, cast house space is limited, and in the case where sow heat shield cannot be widened and increase, the utility model solves
Defect in cast house spatial design;
4, improved sow heat shield, moon consumption are reduced to 6 by original 19, and the sow heat shield service life is than former
To extend 3 times or more;
5, it since sow heat shield restriction can block the injection of blast furnace iron notch slag iron, equally also reduces to main iron
Ditch inner wall enormous impact force reduces to sow inner wall impact erosion probability, extends the service life of sow;
6, the transformation success of sow heat shield, a feasible way is provided for the technological transformation of other production processes
Diameter;
7, improved sow heat shield can be recycled, inner wall refractory casting after metal shell damage with Welding Repair
After material lining is washed away by slag iron, Reusability can be poured into a mould again, create more than 600 ten thousand yuan of economic benefit in year.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment is described in further detail the utility model:
FIG. 1 is a schematic structural view of the utility model;
Structural schematic diagram when Fig. 2 is the utility model inner wall unlocked castable refractory lining.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with the accompanying drawings and implement
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is used only for explaining
The utility model is not used to limit the utility model.
With reference to figure 1 and Fig. 2, the utility model provides a kind of throttle-type main trough of blast furnace heat shield, including section is U-shaped
Metal shell 1,1 external welding well word reinforcing rib 2 of metal shell, prevents 1 temperature distortion of metal shell, 1 inner wall of metal shell from fixing
Multiple herringbone grasps 5, and it is fixed on 1 inner wall of metal shell equipped with castable refractory lining 4, herringbone grasp 5 is embedded into fire resisting and pours
In material feeding lining 4,4 inner wall of castable refractory lining is equipped with the restriction 6 of protrusion, and restriction 6 is arranged in heat shield and blast furnace
The side of tapping hole connection.Two lifting earrings 3 are symmetrically fixed in 1 top surface of metal shell.
At restriction castable refractory lining gradually thicken and be shrunk to it is streamlined, to block the spray of blast furnace iron notch slag iron
It penetrates, avoids other than sow heat shield restriction, inner wall castable refractory lining and slag iron contact scour and erosion.
As the preferred of technical solution, metal shell 1 is 12mm steel plate shells.The long 4800mm of heat shield, width 2780mm,
High 1212mm;4 thickness of castable refractory lining is 200mm;The restriction 6 is connect apart from heat shield with blast furnace iron notch
One end distance be 1100mm, restriction width is 1500mm.
Castable refractory slurries are poured in by a kind of special dies with throttling mouth-shaped on 1 inner wall of metal shell,
And be inserted into vibrating head and keep vibration, castable refractory lining 4 is clenched by multiple herringbone grasps 5.It will with gas burner
Castable refractory lining 4 is dried.
After blast furnace opens tapping hole, using two manipulators of lid-moving machine, reach in heat shield lifting earrings 3, heat-insulated
Cover is lifted and is moved to above main trough of blast furnace, is then lightly fallen.After blast furnace has gone out iron, with identical method handle
Heat shield is removed, and then blocks blast furnace iron notch with Hydraulic clay gun.
Claims (4)
1. a kind of throttle-type main trough of blast furnace heat shield, which is characterized in that including the metal shell that section is U-shaped, metal shell
External welding well word reinforcing rib, metal shell inner wall fixes multiple herringbone grasps, and is fixed on metal equipped with castable refractory lining
Outer casing inner wall, herringbone grasp are embedded into castable refractory lining, and castable refractory lining inner wall is equipped with the restriction of protrusion,
Restriction is arranged in the side that heat shield is connect with blast furnace iron notch.
2. throttle-type main trough of blast furnace heat shield described in accordance with the claim 1, which is characterized in that the metal shell top surface pair
Title fixes two lifting earrings.
3. throttle-type main trough of blast furnace heat shield described in accordance with the claim 1, which is characterized in that the metal shell is 12mm
Steel plate shell.
4. throttle-type main trough of blast furnace heat shield described in accordance with the claim 1, which is characterized in that the heat shield is long
4800mm, width 2780mm, high 1212mm;The castable refractory liner layer thickness is 200mm;The restriction apart from heat shield with
The distance of one end of blast furnace iron notch connection is 1100mm, restriction width is 1500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820418129.8U CN207998619U (en) | 2018-03-27 | 2018-03-27 | A kind of throttle-type main trough of blast furnace heat shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820418129.8U CN207998619U (en) | 2018-03-27 | 2018-03-27 | A kind of throttle-type main trough of blast furnace heat shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207998619U true CN207998619U (en) | 2018-10-23 |
Family
ID=63839504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820418129.8U Expired - Fee Related CN207998619U (en) | 2018-03-27 | 2018-03-27 | A kind of throttle-type main trough of blast furnace heat shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207998619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110093469A (en) * | 2019-06-14 | 2019-08-06 | 郑州赛沃科技有限公司 | Prefabricated iron tap channel |
-
2018
- 2018-03-27 CN CN201820418129.8U patent/CN207998619U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110093469A (en) * | 2019-06-14 | 2019-08-06 | 郑州赛沃科技有限公司 | Prefabricated iron tap channel |
| CN110093469B (en) * | 2019-06-14 | 2023-11-17 | 郑州赛沃科技有限公司 | Prefabricated tapping channel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181023 Termination date: 20190327 |