CN204174255U - A kind of metallurgical electric furnace deathnium bell - Google Patents
A kind of metallurgical electric furnace deathnium bell Download PDFInfo
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- CN204174255U CN204174255U CN201420650596.5U CN201420650596U CN204174255U CN 204174255 U CN204174255 U CN 204174255U CN 201420650596 U CN201420650596 U CN 201420650596U CN 204174255 U CN204174255 U CN 204174255U
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Abstract
The utility model relates to field of metallurgy, specifically a kind of metallurgical electric furnace deathnium bell.This center bell entirety becomes circular platform type structure, and major part upwards, has three electrode holes run through from top to bottom, is divided into thermal insulation layer, cooling layer, dross layer from top to bottom successively.The utility model, owing to effectively achieving dedusting in electrosmelting process, heat insulation function, effectively can prevent electrode from contacting with water-cooled steel pipe and cause electric discharge; Can effectively prevent furnace door oxygen lance oxygen blast from causing the high-temperature molten steel splash of immediate vicinity, make center of electric furnace bell refractory materials work-ing life comparatively primary structure increase by more than 4 times; Effectively can reduce center bell and change number of times, improving operating rate can 10%, saves spare part expense, repair time simultaneously, ensures effectively to improve Business Economic Benefit by the stable smooth operation that furnace equipment is produced.
Description
Technical field
The utility model relates to field of metallurgy, specifically a kind of metallurgical electric furnace deathnium bell.
Background technology
The large bell of modern metallurgical electric furnace is all generally water cooled cover, in order to ensure dust removing effects, preventing electrode from contacting with water-cooled steel pipe simultaneously and causing electric discharge, have a fire proofed wood feed ring being called the belt electrode hole of center bell at bell center.
Centered by cause, bell is immediately below electrode, when electrode power transmission is smelted, be subject to the hyperthermia radiation that electrode produces, when stopping power transmission, when particularly bell produces furnace charge, center bell enters the atmospheric environment of normal temperature, quick cooling, its internal surface thermal stresses changes greatly, and cracks more and more, peels off gradually.Modern electric furnace is typically equipped with oxygen blowing device, no matter be fire door oxygen blast or furnace wall gun oxygen blast, the air-flow that capital has oxidizing atmosphere dense contacts with center bell internal surface, and can produce and damage the oxidation chemistry of center bell internal surface, furnace high-temperature environment also can aggravate this damage.The general capacity of modern electric furnace is all comparatively large, and because the dirt tolerance produced in stove is comparatively large, the dedusting fan power of outfit is also comparatively large, and gas stream in the stove flow velocity is also comparatively large, and the scouring force of air-flow to center bell is corresponding also larger.Under many-sided unfavorable factor effects such as thermal stresses change, oxidizing atmosphere, hot gas flow wash away, refractory materials center bell is very short for work-ing life, generally at 100-150 stove.
Frequent more switching center9's bell causes production cost to increase.Because operating environment is harsh, refractory materials must select costly refractory materials.The more necessary blowing out of switching center9's bell, reduces the production time, reduces equipment operation rate, directly affect the economic benefit of electric furnace.More switching center9's bell personnel are in high-temperature service, and labor strength is comparatively large, and changing the resistance to material of residual center bell rolled off the production line cannot recycle, and simultaneously as non-degradable thing, are difficult to process.Be generally treatment process be as roadbed material after fragmentation.
Summary of the invention
Technical problem to be solved in the utility model is: how to solve very short problem in metallurgical electric furnace center bell work-ing life.
The technical scheme that the utility model adopts: a kind of metallurgical electric furnace deathnium bell, this center bell entirety becomes circular platform type structure, and major part upwards, has three electrode holes run through from top to bottom, is divided into thermal insulation layer, cooling layer, dross layer from top to bottom successively.This programme is lowered the temperature to electrode and dross layer by adopting cooling layer; effectively improve the work-ing life of lagging material; thus improve the metallurgical electric furnace center bell life-span; simultaneously by dross layer; make slag can be splashed to dross layer to be formed on dross layer and spatter flux shielding layer, effectively improve the metallurgical electric furnace center bell life-span.
As a kind of optimal way: described cooling layer comprises upper and lower two-layer water cooling tube, described water cooling tube is around three electrode holes.Two-layer water cooling tube is lowered the temperature to metallurgical electric furnace center bell, the electrode that first the first layer divides with temperature highest portion and the high dross layer of temperature are lowered the temperature, then by the second layer, the electrode of lowering the temperature and the first layer water cooling tube are lowered the temperature, improve cooling efficiency, effectively improve the metallurgical electric furnace center bell life-span.
As a kind of optimal way: there is the bar construction being welded on lower floor's water cooling tube described dross layer inside, and heat insulating material filling is full of the internal space of bar construction except electrode hole.The bar construction of dross layer inside is as the similar in reinforced concrete; serve the effect of stable internal insulation material; part lagging material drops simultaneously does not affect the bell use of metallurgical electric furnace center; and metallurgical electric furnace in use spatters slag formation and spatters flux shielding layer, effectively improves the metallurgical electric furnace center bell life-span.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is that the A of Fig. 1 is to schematic diagram;
Fig. 3 is the B-B schematic cross-section of Fig. 1;
Wherein, 1, thermal insulation layer, 2, cooling layer, 3, dross layer, 4, electrode hole, 5, water cooling tube.
Embodiment
As depicted in figs. 1 and 2, the utility model metallurgical electric furnace deathnium bell is installed on the large bell of metallurgical electric furnace, and this center bell entirety becomes circular platform type structure, and major part upwards, there are three electrode holes run through from top to bottom, are divided into thermal insulation layer, cooling layer, dross layer from top to bottom successively.Each electrode hole lagging material spreads upon on the wall of electrode hole, for placing three electrodes of three-phase alternating current.As shown in Figure 3, the cooling layer of the present embodiment comprises upper and lower two-layer water cooling tube, described water cooling tube is around three electrode holes, two-layer water cooling tube is identical around structure, the water-cooled tube wall of middle reserved electrode hole polishes with nonconducting lagging material, prevents the too high damage water cooling tube of temperature from directly contacting with water cooling tube with electrode.There is the bar construction (with the similar of reinforced concrete, play fixing lagging material, do not require special construction) being welded on lower floor's water cooling tube dross layer inside, and heat insulating material filling is full of the internal space of bar construction except electrode hole.
The utility model, owing to effectively achieving dedusting in electrosmelting process, heat insulation function, effectively can prevent electrode from contacting with water-cooled steel pipe and cause electric discharge; Can effectively prevent furnace door oxygen lance oxygen blast from causing the high-temperature molten steel splash of immediate vicinity, make center of electric furnace bell refractory materials work-ing life comparatively primary structure increase by more than 4 times; Effectively can reduce center bell and change number of times, improving operating rate can 10%, saves spare part expense, repair time simultaneously, ensures effectively to improve Business Economic Benefit by the stable smooth operation that furnace equipment is produced.
Claims (3)
1. a metallurgical electric furnace deathnium bell, is characterized in that: this center bell entirety becomes circular platform type structure, and major part upwards, has three electrode holes run through from top to bottom, is divided into thermal insulation layer, cooling layer, dross layer from top to bottom successively.
2. a kind of metallurgical electric furnace deathnium bell according to claim 1, it is characterized in that: described cooling layer comprises upper and lower two-layer water cooling tube, described water cooling tube is around three electrode holes.
3. a kind of metallurgical electric furnace deathnium bell according to claim 2, is characterized in that: there is the bar construction being welded on lower floor's water cooling tube described dross layer inside, and heat insulating material filling is full of the internal space of bar construction except electrode hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420650596.5U CN204174255U (en) | 2014-11-04 | 2014-11-04 | A kind of metallurgical electric furnace deathnium bell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420650596.5U CN204174255U (en) | 2014-11-04 | 2014-11-04 | A kind of metallurgical electric furnace deathnium bell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204174255U true CN204174255U (en) | 2015-02-25 |
Family
ID=52563079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420650596.5U Active CN204174255U (en) | 2014-11-04 | 2014-11-04 | A kind of metallurgical electric furnace deathnium bell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204174255U (en) |
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2014
- 2014-11-04 CN CN201420650596.5U patent/CN204174255U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |