CN102912053A - Heat-insulation cover of trough - Google Patents
Heat-insulation cover of trough Download PDFInfo
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- CN102912053A CN102912053A CN2012104140581A CN201210414058A CN102912053A CN 102912053 A CN102912053 A CN 102912053A CN 2012104140581 A CN2012104140581 A CN 2012104140581A CN 201210414058 A CN201210414058 A CN 201210414058A CN 102912053 A CN102912053 A CN 102912053A
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- insulation cover
- trough
- heat
- insulation
- iron
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Abstract
The invention discloses a heat-insulation cover of a trough. The heat-insulation cover comprises a heat-insulation cover body and a heat-insulation layer, wherein the heat-insulation layer is arranged on the inner side of the heat-insulation cover body, and the heat-insulation cover body in a proper shape can cover the trough. The heat-insulation cover has the advantages that semi-enclosed space can be formed above the trough, so that the radiation quantity of heat of molten iron is reduced; the ambient temperature of local space is increased, and loss of conductive heat is reduced; and physical loss of the heat of the molten iron is effectively reduced on the premise that the through can be observed and tapping iron operation is unaffected.
Description
Technical field
The invention belongs to field of iron and steel smelting, be specifically related to a kind of trough insulation cover.
Background technology
Molten iron is the main raw material(s) of steel-making, and its chemical heat and physical thermal are the main thermals source of converter steelmaking.In general, the molten iron physical thermal accounts for 50% of converter heat income.What that the converter physical thermal is brought into the height of molten iron temperature indicate, and the assurance of converter steelmaking heat.Therefore, guarantee the temperature of stove molten iron/semisteel, can make the converter endogenous pyrogen sufficient, slagging is rapid.In addition, the raising of molten iron temperature can also increase the adding of steel scrap amount, reduces steel making working procedure iron and steel stock consumption, thereby reduces the converter energy consumption.
From the iron-smelting blast furnace zone, molten iron has larger calorific loss in tapping a blast furnace, convert dress, transportation and waiting process.The temperature drop of molten iron is excessive, can cause iron ladle bonding dross, increases the ironmaking energy consumption, reduces recovery rate of iron, also can directly affect normal production operation when serious.Molten iron temperature is low can to cause also that molten steel is low to be blown seriously, and blow loss is large, and iron and steel stock consumes high, and cost is high, and steel quality is without guarantee, degradation serious consequence under furnace life.Therefore, reduce with control iron steel interface hot metal temperature drop is significant to iron and steel enterprise's cost efficiency.
The iron smelting steel comprises many links such as blast furnace casting, Molten Iron Transportation and hot metal pretreatment.Along with the raw-material variation of Iron and Steel Production, and the ratio of high-quality steel grade is more and more, and the demand of low-sulfur steel is increasing.Keep preferably molten iron temperature, be conducive to steelmaking system production direct motion and cost.The processes such as the heat insulation effect of blast furnace casting process, Molten Iron Transportation process, molten iron group tank, desulfurizing iron and the anti-material of iron ladle or factor are to cause the reason of hot metal temperature drop.Molten iron all is to carry out in modes such as thermal radiation, thermal conduction, thermal convections at the calorific loss of whole transportation.After molten iron enters tank, because quality and the heat-transfer surface of molten iron substantially no longer change in the iron ladle, think that approx heat transfer process is in a flash stable state at this.Wait for very similar with the hot metal temperature drop of transportation, just convection transfer rate (being respectively natural convection and forced convection) is different, in this course, main thermosteresis item has: molten iron is by the heat lost by radiation of upper surface, molten iron is by the heat lost by radiation of iron ladle spherical bottom, and molten iron is by the heat lost by radiation of iron ladle stylolitic part.
Hot-metal insulating measure both at home and abroad is varied, mainly insulation in blast furnace casting, the tank, reduces the aspect such as desulphurization and slag skimming temperature drop and considers.Take to reduce the slack tank rate, improve the iron ladle turnover rate, improve the tank lining material, improve heat-insulating property, iron ladle is added a cover insulation, iron ladle online the measures such as baking can effectively solve the excessive problem of hot metal temperature drop.In addition, the time that taken in whole shipment by the iron process is the longest, on average be subjected to the iron time to account for more than 60% of whole time of shipment, high temperature liquid iron waits as long under State of Blast Furnace, can cause declining to a great extent of molten iron temperature, this part-time depends primarily on iron flow and single iron ladle number.Reduce the number of single iron ladle as far as possible, can effectively reduce the waiting time of molten iron under stove.But, yet there are no disclosing of prior art for the Insulation of casting house trough.
Summary of the invention
The object of the present invention is to provide a kind ofly can be applied to the trough insulation cover that trough is incubated in the process of tapping a blast furnace, directly effectively to reduce the physical thermal loss of molten iron.
To achieve these goals, the invention provides a kind of trough insulation cover, described insulation cover comprises insulation cover body and thermal insulation layer, and thermal insulation layer is arranged on the inboard of insulation cover body, and the insulation cover body has the shape that can cover trough.
According to one embodiment of present invention, described insulation cover body is semicylindrical steel construction piece.
According to one embodiment of present invention, the diameter of described semicylindrical insulation cover body is 800～1200mm.
According to one embodiment of present invention, described thermal insulation layer is cotton for the fire resistant heat preserving of the refractory materials of spraying or stickup.
According to one embodiment of present invention, the thickness of described thermal insulation layer is 20～40mm.
According to one embodiment of present invention, described insulation cover also comprises viewing window.
According to one embodiment of present invention, described insulation cover also comprises hoisting ring.
According to one embodiment of present invention, the length of described insulation cover is 800～1500mm and the sliceable use of the described insulation cover of multistage.
Beneficial effect of the present invention comprises: (1) can form semi-enclosed space above trough, reduces the molten iron thermal exposure; (2) envrionment temperature of raising local space reduces conductive heat loss; (3) satisfying the observation trough and not affecting under the prerequisite of the operation of tapping a blast furnace, effectively reduce the loss of molten iron physical thermal.
Description of drawings
By the description of carrying out below in conjunction with the accompanying drawing that an example exemplarily is shown, above and other purpose of the present invention and characteristics will become apparent, wherein:
Fig. 1 is the front view of the trough insulation cover of exemplary embodiment of the present.
Fig. 2 is the side-view of the trough insulation cover of exemplary embodiment of the present.
Description of reference numerals:
1-insulation cover body, 2-thermal insulation layer, 3-viewing window, 4-hoisting ring.
Embodiment
Below, describe embodiments of the invention in detail with reference to accompanying drawing.
Fig. 1 is the front view of the trough insulation cover of exemplary embodiment of the present, and Fig. 2 is the side-view of the trough insulation cover of exemplary embodiment of the present.As depicted in figs. 1 and 2, the trough insulation cover comprises insulation cover body 1 and thermal insulation layer 2 according to an exemplary embodiment of the present invention, and thermal insulation layer 2 is arranged on the inboard of insulation cover body 1, and insulation cover body 1 has the shape that can cover trough.
Wherein, insulation cover body 1 can be semi-cylindrical shaped, cuboid, the conventional structure such as triangular prism shaped, as long as its mask that is used for covering trough has the area that can cover trough.The material of insulation cover body 1 also can select to be easy to such as steel plate, engineering plastic flitch etc. the material of moulding, durable and stable mechanical property as required, but the invention is not restricted to this.In the present embodiment, insulation cover body 1 is semicylindrical steel construction piece, and preferably, its diameter is 800～1200mm.
Wherein, thermal insulation layer 2 mainly works to prevent that the molten iron heat loss is too fast, also can select as required conventional lagging material to form above-mentioned thermal insulation layer 2.In the present embodiment, thermal insulation layer 2 is the refractory materials of spraying or the fire resistant heat preserving cotton of stickup, but the invention is not restricted to this.Preferably, the thickness of thermal insulation layer is 20～40mm, and this thickness both can play good function of heat insulation, also can not increase too much manufacturing cost and insulation cover weight.
For convenient situation of observing in the trough, insulation cover can also comprise the viewing window 3 that is arranged on insulation cover one side, and for example, the size of viewing window can be 150 * 400mm.For handling, the installation that makes things convenient for insulation cover, insulation cover can also comprise the hoisting ring 4 that is arranged on insulation cover top, the quantity of hoisting ring 4 can for single or several, for example 2.
According to the present invention, the multistage insulation cover can be spliced use, be incubated with the trough to certain-length.Particularly, the length of insulation cover can be 800～1500mm, but the invention is not restricted to this, can specifically arrange as required.
In sum, the present invention can satisfying the observation trough and not affecting the loss that effectively reduces the molten iron physical thermal under the prerequisite that operates of tapping a blast furnace, have good application value.
Although the above has described the present invention in conjunction with exemplary embodiment, those of ordinary skills should be clear, in the situation of the spirit and scope that do not break away from claim, can carry out various modifications to above-described embodiment.
Claims (8)
1. a trough insulation cover is characterized in that, described insulation cover comprises insulation cover body and thermal insulation layer, and thermal insulation layer is arranged on the inboard of insulation cover body, and the insulation cover body has the shape that can cover trough.
2. trough insulation cover according to claim 1 is characterized in that, described insulation cover body is semicylindrical steel construction piece.
3. trough insulation cover according to claim 2 is characterized in that, the diameter of described semicylindrical insulation cover body is 800～1200mm.
4. trough insulation cover according to claim 1 is characterized in that, described thermal insulation layer is the refractory materials of spraying or the fire resistant heat preserving cotton of stickup.
5. trough insulation cover according to claim 4 is characterized in that, the thickness of described thermal insulation layer is 20～40mm.
6. trough insulation cover according to claim 1 is characterized in that, described insulation cover also comprises viewing window.
7. trough insulation cover according to claim 1 is characterized in that, described insulation cover also comprises hoisting ring.
8. trough insulation cover according to claim 1 is characterized in that, the length of described insulation cover is 800～1500mm and the sliceable use of the described insulation cover of multistage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104140581A CN102912053A (en) | 2012-10-26 | 2012-10-26 | Heat-insulation cover of trough |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104140581A CN102912053A (en) | 2012-10-26 | 2012-10-26 | Heat-insulation cover of trough |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102912053A true CN102912053A (en) | 2013-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104140581A Pending CN102912053A (en) | 2012-10-26 | 2012-10-26 | Heat-insulation cover of trough |
Country Status (1)
| Country | Link |
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| CN (1) | CN102912053A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964867A (en) * | 2019-12-30 | 2020-04-07 | 河北鑫达钢铁集团有限公司 | Method for preventing cold shrinkage cracks of blast furnace tapping channel refractory material |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54140033U (en) * | 1978-03-23 | 1979-09-28 | ||
| JPS5827343U (en) * | 1981-08-13 | 1983-02-22 | 株式会社神戸製鋼所 | Blast furnace hot metal gutter cover |
| JPH1060513A (en) * | 1996-08-19 | 1998-03-03 | Kobe Steel Ltd | Device for attaching and detaching main runner cover for iron tapping runner of blast furnace |
| CN2885878Y (en) * | 2005-12-27 | 2007-04-04 | 攀钢集团攀枝花钢铁研究院 | Curved channel cover for molten iron |
| CN200940149Y (en) * | 2006-04-04 | 2007-08-29 | 宝山钢铁股份有限公司 | Blast furnace slag channel cover plate |
| CN201261789Y (en) * | 2008-08-07 | 2009-06-24 | 秦皇岛首秦金属材料有限公司 | Composite type groove cover for blast furnace |
| CN102094092A (en) * | 2011-02-25 | 2011-06-15 | 莱芜钢铁股份有限公司 | Iron slag runner sealing cover plate |
| CN102134623A (en) * | 2010-12-14 | 2011-07-27 | 中冶南方工程技术有限公司 | Blast furnace swing spout dust collecting cover |
| CN202099303U (en) * | 2011-05-11 | 2012-01-04 | 山西太钢不锈钢股份有限公司 | Channel cover for iron tapping hole of blast furnace |
-
2012
- 2012-10-26 CN CN2012104140581A patent/CN102912053A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54140033U (en) * | 1978-03-23 | 1979-09-28 | ||
| JPS5827343U (en) * | 1981-08-13 | 1983-02-22 | 株式会社神戸製鋼所 | Blast furnace hot metal gutter cover |
| JPH1060513A (en) * | 1996-08-19 | 1998-03-03 | Kobe Steel Ltd | Device for attaching and detaching main runner cover for iron tapping runner of blast furnace |
| CN2885878Y (en) * | 2005-12-27 | 2007-04-04 | 攀钢集团攀枝花钢铁研究院 | Curved channel cover for molten iron |
| CN200940149Y (en) * | 2006-04-04 | 2007-08-29 | 宝山钢铁股份有限公司 | Blast furnace slag channel cover plate |
| CN201261789Y (en) * | 2008-08-07 | 2009-06-24 | 秦皇岛首秦金属材料有限公司 | Composite type groove cover for blast furnace |
| CN102134623A (en) * | 2010-12-14 | 2011-07-27 | 中冶南方工程技术有限公司 | Blast furnace swing spout dust collecting cover |
| CN102094092A (en) * | 2011-02-25 | 2011-06-15 | 莱芜钢铁股份有限公司 | Iron slag runner sealing cover plate |
| CN202099303U (en) * | 2011-05-11 | 2012-01-04 | 山西太钢不锈钢股份有限公司 | Channel cover for iron tapping hole of blast furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964867A (en) * | 2019-12-30 | 2020-04-07 | 河北鑫达钢铁集团有限公司 | Method for preventing cold shrinkage cracks of blast furnace tapping channel refractory material |
| CN110964867B (en) * | 2019-12-30 | 2022-01-14 | 河北鑫达钢铁集团有限公司 | Method for preventing cold shrinkage cracks of blast furnace tapping channel refractory material |
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Application publication date: 20130206 |