CN105400918A - Cover plate for slag-iron runner of blast furnace - Google Patents
Cover plate for slag-iron runner of blast furnace Download PDFInfo
- Publication number
- CN105400918A CN105400918A CN201511011276.0A CN201511011276A CN105400918A CN 105400918 A CN105400918 A CN 105400918A CN 201511011276 A CN201511011276 A CN 201511011276A CN 105400918 A CN105400918 A CN 105400918A
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- CN
- China
- Prior art keywords
- cover plate
- blast furnace
- iron runner
- phase
- change material
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- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
Abstract
The invention provides a cover plate for a slag-iron runner of a blast furnace. The cover plate comprises a cover plate shell, wherein the bottom of the cover plate shell is provided with a phase-change material layer, and the upper surface of the cover plate shell is provided with a hoisting hook. The cover plate for the slag-iron runner of the blast furnace is additionally provided with the phase-change material layer, the phase-change material absorbs heat transferred from molten iron and molten slag to the cover plate shell during blast furnace tapping, and the heat of the phase-change material is released during a non-tapping process, so that the problem of periodical load change of a lining of the existing refractory material is effectively avoided, the heat insulation effect of the cover plate for the slag-iron runner of the blast furnace is improved, and the service life of the cover plate is prolonged.
Description
Technical field
The invention belongs to technical field of blast furnace ironmaking, be specifically related to a kind of blast furnace slag iron runner cover plate.
Background technology
Blast furnace needs regular discharge molten iron and slag, slag iron runner is the passage of molten iron and slag flowing, realizes slag sluicing system in flow process simultaneously, and blast furnace slag iron runner needs to cover cover plate, its Main Function is the personnel safety of operator of keeping the scene intact, and avoids the molten iron and the slag that touch high temperature; Next is the thermosteresis reducing molten iron and slag, ensures that good mobility is beneficial to slag sluicing system; 3rd is prevent the dust in molten iron and slag from overflowing, protection casting house operating environment.
But conventional slag iron runner cover plate still has comparatively high temps, constitutes a threat to the safety of blast furnace workman; And general slag iron runner cover plate is fragile, its major cause is that the discontinuity of blast furnace casting causes the resistance to material periodic thermal load change of cover plate, and cover plate inner lining refractory comes off under the repeated action of rapid heat cycle.The cover plate losing refractory materials cannot play heat insulation effect, and when tapping a blast furnace, cover plate head temperature becomes potential safety hazard by obviously raising.
Therefore, need to improve existing conventional slag iron runner cover plate, make slag iron runner cover plate temperature maintain lesser temps, improve the Working environment of blast furnace discharge yard.
Summary of the invention
The object of the invention is to overcome the problem that existing slag iron runner cover plate heat-blocking action is poor, work-ing life is short.
For this reason, the invention provides a kind of blast furnace slag iron runner cover plate, comprise cover plate housing, described cover plate housing bottom is provided with phase-change material layers, and cover plate housing upper surface is provided with Lift hook.
Further, above-mentioned cover plate housing is groove structure, and phase-change material layers is connected in this groove.
Further, many stiffening webs are provided with in above-mentioned cover plate housing.
Further, the crisscross distribution of above-mentioned many stiffening webs.
Further, above-mentioned Lift hook has four, is separately positioned on the corner of cover plate housing.
Further, above-mentioned phase-change material layers adopts massfraction to be 68.1%KCl and 31.9%ZnCl
2the obtained phase change heat storage material composition of mixture.
Further, above-mentioned phase-change material layers adopts NaNO
3or KNO
3heat-storing material is made.
Beneficial effect of the present invention: this blast furnace slag iron runner cover plate provided by the invention adopts phase-change material layers to make the liner of slag iron runner cover plate, heat is absorbed and temperature remains unchanged by phase transformation, effectively prevent existing cover plate liner to come off under the repeated action of rapid heat cycle, cover plate cannot play the problem of heat-blocking action, improve slag iron runner cover plate effect of heat insulation, extend its work-ing life.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is the vertical view of blast furnace slag iron runner cover plate of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Description of reference numerals: 1, phase-change material layers; 2, cover plate housing; 3, stiffening web; 4, Lift hook.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
As depicted in figs. 1 and 2, in order to improve blast furnace slag iron runner cover plate heat-blocking action, extend the life-span of slag iron runner cover plate, present embodiments provide a kind of blast furnace slag iron runner cover plate, comprise cover plate housing 2, be provided with phase-change material layers 1 bottom described cover plate housing 2, cover plate housing 2 upper surface is provided with Lift hook 4.
Wherein, concrete, described cover plate housing 2 is groove structure, and phase-change material layers 1 is connected in this groove, fixing more firm between phase-change material layers 1 and cover plate housing 2.
In order to strengthen the rigidity of this blast furnace slag iron runner cover plate, in described cover plate housing 2, be provided with many stiffening webs 3, the crisscross setting of these many stiffening webs 3.
And stablizing in order to hoisting process, described Lift hook 4 has four, is separately positioned on the corner of cover plate housing 2.
The size of the blast furnace slag iron runner cover plate of the present embodiment matches with the size of actual slag iron runner.
When blast furnace casting, heat is imported phase-change material layers 1 by cover plate housing 2 by the heat of molten iron and slag, and the phase change material of phase-change material layers 1 absorbs heat by phase transformation and temperature is substantially constant, thus ensures that cover plate housing 2 top can not steep temperature rise; When blast furnace does not tap a blast furnace, energy is released in air by cover plate housing 2 by phase-change material layers 1.
In the present embodiment, the phase change material that phase-change material layers 1 is selected can have multiple, as 68.1%KCl and 31.9%ZnCl
2mixture, 38.5%MgCl
2with the mixture of 61.5%NaCl, independent NaNO
3, KNO
3deng, which kind of phase change material it selects depend primarily on blast furnace itself.Long for its each tapping duration of large blast furnace, just adopt the material that transformation temperature is higher, as independent NaNO
3or KNO
3heat-storing material; And short for its each tapping duration of small furnace, just adopt the material that transformation temperature is lower, if massfraction is 68.1%KCl and 31.9%ZnCl
2the obtained phase change heat storage material of mixture, its fusing point is 235 DEG C, and Heat of fusion is 198kJ/kg.
In sum, this blast furnace slag iron runner cover plate provided by the invention adds phase-change material layers, when blast furnace casting, phase change material absorption molten iron and slag import the heat of cover plate housing into, when not tapping a blast furnace, the heat of phase change material discharges again, effectively avoids existing refractory lining cyclical heat load variations problem, improve the heat-blocking action of blast furnace slag iron runner cover plate, extend its work-ing life.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (7)
1. a blast furnace slag iron runner cover plate, comprise cover plate housing (2), it is characterized in that: described cover plate housing (2) bottom is provided with phase-change material layers (1), and cover plate housing (2) upper surface is provided with Lift hook (4).
2. blast furnace slag iron runner cover plate as claimed in claim 1, is characterized in that: described cover plate housing (2) is groove structure, and phase-change material layers (1) is connected in this groove.
3. blast furnace slag iron runner cover plate as claimed in claim 1 or 2, is characterized in that: be provided with many stiffening webs (3) in described cover plate housing (2).
4. blast furnace slag iron runner cover plate as claimed in claim 3, is characterized in that: the crisscross distribution of described many stiffening webs (3).
5. blast furnace slag iron runner cover plate as claimed in claim 1, is characterized in that: described Lift hook (4) has four, is separately positioned on the corner of cover plate housing (2).
6. blast furnace slag iron runner cover plate as claimed in claim 1, is characterized in that: described phase-change material layers (1) adopts massfraction to be 68.1%KCl and 31.9%ZnCl
2the obtained phase change heat storage material composition of mixture.
7. blast furnace slag iron runner cover plate as claimed in claim 1, is characterized in that: described phase-change material layers (1) adopts NaNO
3or KNO
3heat-storing material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011276.0A CN105400918A (en) | 2015-12-30 | 2015-12-30 | Cover plate for slag-iron runner of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011276.0A CN105400918A (en) | 2015-12-30 | 2015-12-30 | Cover plate for slag-iron runner of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105400918A true CN105400918A (en) | 2016-03-16 |
Family
ID=55466673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511011276.0A Pending CN105400918A (en) | 2015-12-30 | 2015-12-30 | Cover plate for slag-iron runner of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105400918A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581503A (en) * | 2009-06-26 | 2009-11-18 | 吴耀琪 | Heat storage multi-use solar cooker |
| CN101592455A (en) * | 2009-06-26 | 2009-12-02 | 吴耀琪 | Solar energy high-temperature phase-change heat reservoir |
| CN101830435A (en) * | 2010-04-07 | 2010-09-15 | 昆明理工大学 | Resource recycling method of metallurgical flue gas |
| CN202164312U (en) * | 2011-07-01 | 2012-03-14 | 河北省首钢迁安钢铁有限责任公司 | Lining structure for blast furnace slag iron runner cover plate |
| CN103484580A (en) * | 2013-09-13 | 2014-01-01 | 鞍钢集团工程技术有限公司 | Method and device for recovering molten blast furnace slag sensible heat |
| CN103525376A (en) * | 2013-09-18 | 2014-01-22 | 中国科学院过程工程研究所 | Heat storage material for recovering industrial exhaust heat and preparation method and application thereof |
| CN205443352U (en) * | 2015-12-30 | 2016-08-10 | 中冶南方工程技术有限公司 | High slag iron runner apron |
-
2015
- 2015-12-30 CN CN201511011276.0A patent/CN105400918A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581503A (en) * | 2009-06-26 | 2009-11-18 | 吴耀琪 | Heat storage multi-use solar cooker |
| CN101592455A (en) * | 2009-06-26 | 2009-12-02 | 吴耀琪 | Solar energy high-temperature phase-change heat reservoir |
| CN101830435A (en) * | 2010-04-07 | 2010-09-15 | 昆明理工大学 | Resource recycling method of metallurgical flue gas |
| CN202164312U (en) * | 2011-07-01 | 2012-03-14 | 河北省首钢迁安钢铁有限责任公司 | Lining structure for blast furnace slag iron runner cover plate |
| CN103484580A (en) * | 2013-09-13 | 2014-01-01 | 鞍钢集团工程技术有限公司 | Method and device for recovering molten blast furnace slag sensible heat |
| CN103525376A (en) * | 2013-09-18 | 2014-01-22 | 中国科学院过程工程研究所 | Heat storage material for recovering industrial exhaust heat and preparation method and application thereof |
| CN205443352U (en) * | 2015-12-30 | 2016-08-10 | 中冶南方工程技术有限公司 | High slag iron runner apron |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160316 |
|
| RJ01 | Rejection of invention patent application after publication |