CN102559995A - Water-cooled furnace lid for refined-smelting ladle furnace, and slag removal method of dust-proof flue of water-cooled furnace lid - Google Patents
Water-cooled furnace lid for refined-smelting ladle furnace, and slag removal method of dust-proof flue of water-cooled furnace lid Download PDFInfo
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- CN102559995A CN102559995A CN2012100489659A CN201210048965A CN102559995A CN 102559995 A CN102559995 A CN 102559995A CN 2012100489659 A CN2012100489659 A CN 2012100489659A CN 201210048965 A CN201210048965 A CN 201210048965A CN 102559995 A CN102559995 A CN 102559995A
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Abstract
The invention discloses a water-cooled furnace lid for a refined-smelting ladle furnace, and a slag removal method of a dust-proof flue thereof. The water-cooled furnace lid comprises a dust-proof flue, wherein one end of the dust-proof flue is connected with the water-cooled furnace lid, and is communicated with a space in the refined-smelting ladle furnace, and the other end of the dust-proof flue is connected with a dust removal fan; and a flue gas regulator valve is arranged in the dust removal flue. The water-cooled furnace lid also comprises an opening arranged in the dust removal flue, and a movable cover plate arranged on the opening, wherein the opening can be sealed by the movable cover plate. Under the condition that the smooth production is carried out at processing working positions of the LF (Ladle Furnace), the accumulated slag in the dust removal flue of the water-cooled furnace lid can be cleaned simply and fast, and the time consumed by cleaning the accumulated slag is short.
Description
Technical field
The present invention relates to the furnace outer refining technology field, more particularly, relate to the clinker removal method of the dust-removing flue of a kind of ladle refining furnace water cooled cover that can be convenient to clear up and a kind of this water cooled cover.
Background technology
Ladle refining furnace (that is LF (Ladle Furnace) stove) is the refining unit that grows up in Japan at the initial stage seventies.Because its equipment is simple, investment cost is low, and flexible operation and refining effect are good and become the up-and-coming youngster of metallurgy industry, have obtained using widely and developing in the whole world.The handled steel grade of LF stove almost relates to all steel grades from special steel to general steel, can adopt the different processes operating duty according to the needs of quality control in the production.In various secondary refining equipment, the comprehensive price ratio of LF stove is higher.
The LF device mainly is made up of molten steel hired car, water cooled cover and hoisting appliance, electrode lifting mechanism, electric-pole horizontal arm, alloy and slag charge charging system, molten steel jar Bottom Argon Blowing Device, wire feeder, X-former and short net etc.
Fig. 1 shows the synoptic diagram according to the ladle refining furnace of prior art.Fig. 2 A shows the schematic top plan view according to the water cooled cover and the dust-removing flue thereof of the ladle refining furnace of prior art, and the master that Fig. 2 B shows according to the water cooled cover of the ladle refining furnace of prior art and dust-removing flue thereof looks synoptic diagram.
Shown in Fig. 1, Fig. 2 A and Fig. 2 B, the water cooled cover 1 of LF stove is used for the jar mouth of ladle 2 is sealed, and water cooled cover 1 is contactless with the jar mouth of ladle 2.Water cooled cover 1 is provided with hoisting appliance with processing requirement.Water cooled cover 1 is layering cooling structure pattern; Acting as of water cooled cover 1: the one, guarantee that (this space is commonly called as " in the stove ") forms inert ambient environment in the space between molten steel face 3 and water cooled cover 1 inside cover; Prevent that extraneous air from getting in the stove, avoid molten steel, electrode 4 to contact secondary oxidation takes place with air; The 2nd, the dust in the molten steel treating processes is collected (that is, the dedusting effect), prevent the flue gas effusion to greatest extent, the protection environment.Smoke regulating valve door (not shown) is set on the dust-removing flue 6 of water cooled cover 1 simultaneously, under the pressure-fired condition, operates to guarantee the LF stove.Water inlet pipe 7 is used to water cooled cover 1 with return water pipe 8 recirculated cooling water is provided.
At present; For the dust-removing flue (also claiming the flue horizontal section) of the LF stove water cooled cover of domestic and international online use; Increase along with the molten steel treatment capacity; Because the slag splash causes here constantly accumulated slag in the molten steel treating processes,, cause accumulated slag the dust-removing flue cross section of effectively discharging fume to reduce constantly that (the smoke evacuation sectional area of design is about 700 * 800mm usually when being accumulated to a certain degree
2), and then smoke evacuation (dedusting) deleterious when causing molten steel to be handled, dust removing effects constantly worsens (because of need carry out the ladle bottom blowing argon gas, supervening volume of smoke in the molten steel treating processes, especially when adding slag charge).As untimely dust-removing flue 6 accumulated slags are cleared up; Because effective smoke evacuation cross section of dust-removing flue 6 significantly dwindles, volume of smoke will occur can't be siphoned away by dedusting fan, causes volume of smoke excessive; Cause environmental pollution accident, post and near zone safety and environmental protection are caused have a strong impact on.At this moment; Need stop molten steel handling; At first use the job platform cantilever to hang electrode 4 hung to move and deposit to the electrode storage cylinder, again the rise fall of electrodes passage of anti-material the 5 (also can be described as three orifice plates 5) on water cooled cover 1 top is hung immediately and move and be positioned over job platform (this section operation need usually about 15-25 branch consuming time/inferior), then; Can clear up the accumulated slag in the dust-removing flue 6 of water cooled cover 1 with the manual work mode, about general about 10 minutes of cleaning time spent/inferior.After cleaning out; Need at first use the job platform cantilever to hang three orifice plates 5 are hung the backwater black furnace and cover 1 top and adjust, lay appropriate; Respectively electrode 4 is hung back original position subsequently and install, three orifice plates 5 and electrode 4 are all installed back original position just can carry out the molten steel processing after appropriate.Each accomplish whole this type of operation and all need time spent 50-60 branch/inferior usually,, needed clear up in average about 2-3 days the accumulated slag in the dust-removing flue 6 of water cooled cover 1 because of treatment capacity is different.
In the prior art, when clearing up the dust-removing flue accumulated slag of water cooled cover, LF operation molten steel is handled and will be interrupted, and the operation organization of production produces fluctuation before and after causing, and direct motion causes greater impact to economic production.The dust-removing flue accumulated slag of the water cooled cover of each LF stove is cleared up length consuming time, and the accumulated slag cleaning is complete many to the time spent of resuming production again, and each accumulated slag removal treatment impacts bigger to the production direct motion, at present temporary no a kind of comparatively special cost-effective technological solution.
Summary of the invention
To the above-mentioned deficiency that exists in the prior art, one of the object of the invention is to provide a kind of ladle refining furnace water cooled cover with dust-removing flue of being convenient to clear up accumulated slag.Another object of the present invention is to provide the method for the accumulated slag in a kind of dust-removing flue that can clear up water cooled cover simple and direct, apace.
One side of the present invention provides a kind of water cooled cover of ladle refining furnace; Said water cooled cover comprises dust-removing flue; One end of said dust-removing flue is connected with water cooled cover and is communicated with the furnace inner space of ladle refining furnace; The other end of said dust-removing flue is connected with dedusting fan; And be provided with the smoke regulating valve door in the said dust-removing flue, said water cooled cover comprises also and is arranged on the perforate on the dust-removing flue and is arranged on the removable cover in the said perforate that said removable cover can seal said perforate.
According to an embodiment of water cooled cover of the present invention, wherein, said perforate can be arranged on the said end place near dust-removing flue, promptly is arranged on the end place that is connected with water cooled cover near said dust-removing flue.
According to an embodiment of water cooled cover of the present invention, wherein, the quantity of said removable cover and perforate can be for more than two.
A kind of clinker removal method of dust-removing flue of ladle refining furnace water cooled cover is provided according to a further aspect in the invention, and said clinker removal method may further comprise the steps: the removable cover that perforate is set on dust-removing flue and is used to seal said perforate; The liquid steel refining that stops ladle refining furnace being handled, and opens removable cover, the accumulated slag in the cleaning dust-removing flue; Closed removable cover.
According to an embodiment of the clinker removal method of the dust-removing flue of ladle refining furnace water cooled cover of the present invention, wherein, the said step of opening removable cover is carried out in the heat gap of ladle refining furnace.
Compared with prior art; The clinker removal method of ladle refining furnace water cooled cover of the present invention and dust-removing flue thereof can guaranteed under the situation that the continuous direct motion of LF stove processing station is produced; Realize simply, efficiently the accumulated slag in the dust-removing flue of water cooled cover is cleared up, and cleaning accumulated slag weak point consuming time.
Description of drawings
Fig. 1 shows the synoptic diagram according to the ladle refining furnace of prior art.
Fig. 2 A shows the schematic top plan view according to the water cooled cover and the dust-removing flue thereof of the ladle refining furnace of prior art.
The master that Fig. 2 B shows according to the water cooled cover of the ladle refining furnace of prior art and dust-removing flue thereof looks synoptic diagram.
Fig. 3 A shows the schematic top plan view of the water cooled cover of ladle refining furnace according to an exemplary embodiment of the present invention.
Fig. 3 B shows according to an exemplary embodiment of the present invention, and the master of the water cooled cover of ladle refining furnace looks synoptic diagram.
Embodiment
Hereinafter, will specify the clinker removal method of ladle refining furnace water cooled cover of the present invention and dust-removing flue thereof with reference to accompanying drawing and exemplary embodiment.
Fig. 3 A shows the schematic top plan view of the water cooled cover of ladle refining furnace according to an exemplary embodiment of the present invention, and Fig. 3 B shows according to an exemplary embodiment of the present invention that the master of the water cooled cover of ladle refining furnace looks synoptic diagram.
Shown in Fig. 3 A and Fig. 3 B; The water cooled cover 1 of ladle refining furnace comprises dust-removing flue 6 according to an exemplary embodiment of the present invention; One end of said dust-removing flue 6 is connected with water cooled cover 1 and is communicated with the furnace inner space of ladle refining furnace; The other end of said dust-removing flue 6 is connected with the dedusting fan (not shown); And be provided with the flow of smoke regulating valve door (not shown) with the control flue gas in the said dust-removing flue 6, said water cooled cover 1 also comprises the perforate 9 that is arranged on the dust-removing flue 6 and is arranged on the removable cover 10 in the perforate 9 that said removable cover 10 can seal said perforate 9.Usually; Water cooled cover includes the water-cooled mechanism of cooling off water cooled cover 1 through recirculated cooling water; For example, said water-cooled mechanism can be through by water inlet pipe 7, rising pipe 8 and respectively water inlet pipe 7 is constituted with a plurality of branching pipes that rising pipe 8 is connected with water cooled cover 1.
In an exemplary embodiment of water cooled cover of the present invention, said perforate 9 can be provided with according to accumulated slag situation in the dust-removing flue 6, with convenient accumulated slag in the dust-removing flue 6 is cleared up.For example; Usually; The comparatively serious position of dust-removing flue 6 accumulated slags of water cooled cover 1 is near the link position of dust-removing flue 6 and water cooled cover 1; Therefore, in one exemplary embodiment of the present invention, said perforate 9 can be set to the end that is connected with water cooled cover 1 near dust-removing flue 6.
In another exemplary embodiment of water cooled cover of the present invention, the quantity of said removable cover and perforate can be cleared up the many places accumulated slag that possibly exist in the dust-removing flue 6 with convenient for more than two.
In an exemplary embodiment of water cooled cover of the present invention, the size of said removable cover 10 is about 400 * 400mm
2, thickness is about 20mm.
The clinker removal method of the dust-removing flue of ladle refining furnace water cooled cover comprises according to an exemplary embodiment of the present invention: the removable cover 10 that perforate 9 is set on dust-removing flue 6 and is used for seal and opening 9; The liquid steel refining that stops ladle refining furnace being handled, and opens removable cover 10, the accumulated slag in the cleaning dust-removing flue 6; Closed removable cover 10.Preferably; The said step of opening removable cover in the heat gap of ladle refining furnace (for example; Time period in adjacent twice liquid steel refining treating processes that the use ladle refining furnace carries out; Be in off working state at this time period ladle refining furnace) in carry out, thereby the scarfing cinder treating processes that can guarantee dust-removing flue does not impact the refining treatment explained hereafter of ladle refining furnace.
Adopt clinker removal method of the present invention, need as accumulated slag manner of cleaning up of the prior art, not hang earlier and move, lift electrode 4, three orifice plates 5, clear up accumulated slag then; Clear up and get final product but only need open 10 pairs of accumulated slags of removable cover on the flue.Scarfing cinder handle average about 15 minutes consuming time/inferior; This operation duration is in heat scope off time; Can not cause the continuous handling interrupt of furnaceman's LF preface heat of molten steel; The operation organization of production does not produce fluctuation before and after can not making, and can not impact to the economic production direct motion, can adapt to and satisfy the requirement of operation economic production fully.
In sum; The clinker removal method of ladle refining furnace water cooled cover of the present invention and dust-removing flue thereof can be under the situation of guaranteeing the continuous direct motion of LF stove processing station production; Realize simply, efficiently the accumulated slag in the dust-removing flue of water cooled cover is cleared up, and cleaning accumulated slag weak point consuming time.
Although combined exemplary embodiment above the clinker removal method of ladle refining furnace water cooled cover of the present invention and dust-removing flue thereof has been described; But those of ordinary skills should be clear; Under the situation of spirit that does not break away from claim and limited and scope, can adjust or revise above-mentioned exemplary embodiment.
Claims (5)
1. the water cooled cover of a ladle refining furnace; Said water cooled cover comprises dust-removing flue, and an end of said dust-removing flue is connected with water cooled cover and is communicated with the furnace inner space of ladle refining furnace, and the other end of said dust-removing flue is connected with dedusting fan; And be provided with the smoke regulating valve door in the said dust-removing flue; It is characterized in that said water cooled cover comprises also and be arranged on the perforate on the dust-removing flue and be arranged on the removable cover in the said perforate that said removable cover can seal said perforate.
2. water cooled cover according to claim 1 is characterized in that, said perforate is arranged on the said end place near dust-removing flue.
3. water cooled cover according to claim 1 is characterized in that, the quantity of said removable cover and perforate is more than two.
4. the clinker removal method of the dust-removing flue of a ladle refining furnace water cooled cover is characterized in that, said clinker removal method may further comprise the steps:
The removable cover that perforate is set on dust-removing flue and is used to seal said perforate;
The liquid steel refining that stops ladle refining furnace being handled, and opens removable cover, the accumulated slag in the cleaning dust-removing flue;
Closed removable cover.
5. the clinker removal method of the dust-removing flue of ladle refining furnace water cooled cover according to claim 4 is characterized in that, the said step of opening removable cover is carried out in the heat gap of ladle refining furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100489659A CN102559995A (en) | 2012-02-29 | 2012-02-29 | Water-cooled furnace lid for refined-smelting ladle furnace, and slag removal method of dust-proof flue of water-cooled furnace lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100489659A CN102559995A (en) | 2012-02-29 | 2012-02-29 | Water-cooled furnace lid for refined-smelting ladle furnace, and slag removal method of dust-proof flue of water-cooled furnace lid |
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|---|---|
| CN102559995A true CN102559995A (en) | 2012-07-11 |
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|---|---|---|---|
| CN2012100489659A Pending CN102559995A (en) | 2012-02-29 | 2012-02-29 | Water-cooled furnace lid for refined-smelting ladle furnace, and slag removal method of dust-proof flue of water-cooled furnace lid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238905A (en) * | 2015-09-28 | 2016-01-13 | 南京钢铁股份有限公司 | Automatic dust removal device for low-frequency (LF) refining furnace and control method thereof |
| CN106399624A (en) * | 2016-06-12 | 2017-02-15 | 江苏永钢集团有限公司 | Ladle refining furnace water-cooling furnace cover |
| CN107447077A (en) * | 2017-08-23 | 2017-12-08 | 浙江杭真能源科技股份有限公司 | Fume dust remover and its dust removal method during vacuum refining furnace hello silk |
| CN114350893A (en) * | 2022-01-04 | 2022-04-15 | 武汉钢铁有限公司 | Online cleaning method for accumulated slag on furnace cover of LF (ladle furnace) refining furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953618A (en) * | 1982-09-22 | 1984-03-28 | Sumitomo Metal Ind Ltd | Lf treatment device for molten steel |
| JPS6217115A (en) * | 1985-07-15 | 1987-01-26 | Kobe Steel Ltd | Combined structure of furnace cap and dust collecting hood of ladle refining device |
| CN2450220Y (en) * | 2000-10-19 | 2001-09-26 | 中国冶金建设集团包头钢铁设计研究总院 | Bell of ladle refining furnace |
| JP2005105378A (en) * | 2003-09-30 | 2005-04-21 | Sanyo Special Steel Co Ltd | Ladle refining apparatus |
| CN201228270Y (en) * | 2008-05-07 | 2009-04-29 | 攀枝花新钢钒股份有限公司 | Smoking pipe and water cooling furnace lid including the same |
| CN201548055U (en) * | 2009-12-11 | 2010-08-11 | 攀枝花新钢钒股份有限公司 | Cooling furnace cover of LF furnace |
-
2012
- 2012-02-29 CN CN2012100489659A patent/CN102559995A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953618A (en) * | 1982-09-22 | 1984-03-28 | Sumitomo Metal Ind Ltd | Lf treatment device for molten steel |
| JPS6217115A (en) * | 1985-07-15 | 1987-01-26 | Kobe Steel Ltd | Combined structure of furnace cap and dust collecting hood of ladle refining device |
| CN2450220Y (en) * | 2000-10-19 | 2001-09-26 | 中国冶金建设集团包头钢铁设计研究总院 | Bell of ladle refining furnace |
| JP2005105378A (en) * | 2003-09-30 | 2005-04-21 | Sanyo Special Steel Co Ltd | Ladle refining apparatus |
| CN201228270Y (en) * | 2008-05-07 | 2009-04-29 | 攀枝花新钢钒股份有限公司 | Smoking pipe and water cooling furnace lid including the same |
| CN201548055U (en) * | 2009-12-11 | 2010-08-11 | 攀枝花新钢钒股份有限公司 | Cooling furnace cover of LF furnace |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238905A (en) * | 2015-09-28 | 2016-01-13 | 南京钢铁股份有限公司 | Automatic dust removal device for low-frequency (LF) refining furnace and control method thereof |
| CN106399624A (en) * | 2016-06-12 | 2017-02-15 | 江苏永钢集团有限公司 | Ladle refining furnace water-cooling furnace cover |
| CN107447077A (en) * | 2017-08-23 | 2017-12-08 | 浙江杭真能源科技股份有限公司 | Fume dust remover and its dust removal method during vacuum refining furnace hello silk |
| CN114350893A (en) * | 2022-01-04 | 2022-04-15 | 武汉钢铁有限公司 | Online cleaning method for accumulated slag on furnace cover of LF (ladle furnace) refining furnace |
| CN114350893B (en) * | 2022-01-04 | 2022-11-11 | 武汉钢铁有限公司 | Online cleaning method for accumulated slag on furnace cover of LF (ladle furnace) refining furnace |
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Application publication date: 20120711 |