CN101720145B - Insulated part of self-baking electrode protection device and insulated material - Google Patents
Insulated part of self-baking electrode protection device and insulated material Download PDFInfo
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- CN101720145B CN101720145B CN 200910223810 CN200910223810A CN101720145B CN 101720145 B CN101720145 B CN 101720145B CN 200910223810 CN200910223810 CN 200910223810 CN 200910223810 A CN200910223810 A CN 200910223810A CN 101720145 B CN101720145 B CN 101720145B
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Abstract
The invention discloses an insulated part of a self-baking electrode protection device and an insulated material for manufacturing the same. The electrode protection device of a self-baking electrode comprises a plurality of fan-shaped sections which are arranged on the periphery of the electrode; the electrode protection device is arranged on an electrode bottom ring and supported by a bottom ring pull rod; a groove-shaped insulated part is arranged between the electrode protection device and the electrode bottom ring; and the fan-shaped bottom of the electrode protection device is embedded in the groove-shaped insulated part. Since the electrode protection device is wrapped by the insulated part, the electrode bottom ring and the electrode protection device can not be switched on by splashing conductive furnace slag, and the burning mark accidents of the electrode protection device can be greatly reduced, thereby decreasing the maintenance cost and improving the equipment operation rate.
Description
Technical field
The present invention relates to the electric furnace field of metallurgy, be specifically related to a kind of insulating element of self-baking electrode protection device and for the manufacture of the insulating material of this insulating element.
Background technology
At present, self-baking electrode is widely used in the fields such as iron alloy electric furnace, furnace of calcium carbide, phosphorus electric furnace processed.Because self-baking electrode need at high temperature be worked usually, so need to adopt protective device to cool off and protect the conductive contact element of self-baking electrode body and electrode interior, can prevent that electrode is because of the exposed oxidation that causes outside simultaneously.In addition, the protective device of self-baking electrode also plays a part the electrode fixed support.At present, the protective device of self-baking electrode normally cools off and guard electrode in the mode of water-cooled.
Fig. 1 shows the structure of the self-baking electrode of prior art.With reference to Fig. 1, comprise electrode shell 1, Electrode Fluctuation Device 2, electrode heating apparatus 3, electrode protecting device 4, base ring pull bar 5, electrode base ring 6 and welding tip 7 according to the self-baking electrode of prior art.Electrode shell 1 generally be welded into by cold-rolled steel sheet cylindric, being used for the splendid attire block type electrode sticks with paste and reinforces roasting electrode, conductive contact element (being electrode power supply system Connection Element) (not shown) also is installed on the electrode shell gusset, and conductive contact element can produce relative sliding with electrode shell when Electrode Fluctuation.Electrode shell 1 is along with welding tip 7 constantly consumes together, and used up electrode shell replenishes from the top welding; Electrode heating apparatus 3 is used for that consumable electrode is stuck with paste and the roasting electrode makes it moulding and meets production requirement; Welding tip 7 is constantly to consume in process of production.The effect of Electrode Fluctuation Device 2 is regularly to press electrode, and the part that consumption of electrode is fallen is replenished, so that welding tip 7 keeps certain-length.Normally a kind of water cooling plant of electrode protecting device 4 and by identical a plurality of parts (general quinquepartite) forms a cylinder-like structure wrap up electrode (electrode protecting device and its inner electrode keep 15mm~25mm distance with avoid its two between conduction or sting fiery); the each several part of electrode protecting device 4 is fixed on the electrode base ring 6; electrode base ring 6 is fixing by base ring pull bar 5, is used for support electrode protective device 4.
Fig. 2 shows the amplification diagram of the A part of the self-baking electrode among Fig. 1; Fig. 3 A shows the vertical view of the insulating element among Fig. 2; Fig. 3 B shows the vertical view of each part of the insulating element among Fig. 2, and Fig. 3 C shows insulating element among Fig. 1 and the end view of electrode protecting device.
As shown in Figure 2, the self-baking electrode of prior art also comprise the insulating element 8 that is arranged between electrode protecting device 4 and the electrode base ring 6 ', be used for making between electrode protecting device 4 and the electrode base ring and insulate.As shown in Figure 3A, insulating element 8 ' in the form of a ring.Specifically, corresponding with the electrode protecting device 4 that is made of identical a plurality of parts, insulating element 8 ' be made of the identical a plurality of parts of shape generally is comprised of five part fan-shaped section, and the shape of each part of insulating element is shown in Fig. 3 B.Insulating element 8 ' be arranged on the bottom of electrode protecting device 4, shown in Fig. 3 C.
Operation principle below with reference to Fig. 1 brief description self-baking electrode.The block type electrode paste is joined in the tubular electrode shell 1 from self-baking electrode system top, then the heat and the heat in the electric stove hearth that produce by electrode heating apparatus 3 carry out roasting, make electrode paste that a series of softening, fugitive constituent effusion, sintering occur and finally form the good self-baking electrode of electric conductivity.Roasting electrode is pressed down by Electrode Fluctuation Device 2 and forms welding tip 7, and electrode is by the conductive contact element power supply of electrode protecting device 4 inside, and welding tip 7 just can enter and carry out operation (for example, smelting operation) in the electric furnace.
In the electric furnace smelting process, partial electrode protective device 4 need stretch in the stove for a long time, and the most of the time be in open arc and smelt state, the thermal radiation of electric furnace inside is very strong, temperature is above 1000 ℃ in the stove.In smelting process, turn over slag, collapse when expecting; the high-temperature electric conduction slag splashes between welding tip 7 and the electrode base ring 6 and between the bottom of electrode base ring 6 and electrode protecting device 4; thereby make electrode base ring 6 and electrode protecting device 4 charged and cause that easily electrode protecting device 4 the thorn fire occurs and punctures the steel water cooling wall, cause the charged and leakage accident of body of heater.And a large amount of cooling waters bleeds, and high-temperature electric resistance furnace is interior can to produce water-gas, and the danger that causes burner hearth gas explosion is arranged.
In addition, the insulating material of traditional self-baking electrode is made by the phlogopite material, the phlogopite material is the lamellar structure, 2%~3% the crystallization water is arranged, thermal shock resistance is relatively poor, and anti-scour property is poor, its under hot conditions volatile decrystallize water and be out of shape to peel off cause material to damage gradually inefficacy, when reality is used the life-span short, only have about 30 days; In addition, the anti-scour property of phlogopite material is relatively poor, if run in the smelting process turn over slag, the material that collapses just has slag and splashes to and damage insulating barrier on the insulating element, causes the thorn fire.
The thorn fire accident of electrode protecting device is an important undesirable element that affects equipment operation rate, accounts for 30%~50% of total equipment operation rate.Therefore, the insulation processing of carrying out the electrode protecting device system is to improve an important means of electric furnace efficient.
Summary of the invention
One of purpose of the present invention is to select the material of suitable alternative phlogopite to make insulating element, to improve the insulation property of self-baking electrode protection device.
One of purpose of the present invention is to design a kind of structural rational insulating element, so that electrode protecting device obtains good insulation protection.
The invention provides a kind of insulating element of self-baking electrode protection device; described electrode protecting device formed by several fan-shaped section and be arranged on electrode around; described electrode protecting device is arranged on the electrode base ring and by the base ring pull bar and supports; wherein; be provided with the insulating element of a groove shapes between described electrode protecting device and described electrode base ring, the fan-shaped bottom of described electrode protecting device is embedded in the insulating element of described groove shapes.
In the present invention, described insulating element is by a kind of the making in aluminium oxide ceramics class material, mullite and the quartz material.Described insulating element is made of the identical a plurality of parts of shape, and the number of the part of described insulating element is identical with the number of the composition fan-shaped section of described electrode protecting device.The thickness of the each several part of described insulating element is in the scope of 10mm to 25mm, and the length of the each several part of described insulating element is in the scope of 15mm to 35mm, and the height of the each several part of described insulating element is in the scope of 20mm to 45mm.
The present invention also provides a kind of insulating material, and for the manufacture of the insulating element of above-mentioned self-baking electrode protection device, wherein, described insulating material is a kind of in aluminium oxide ceramics class material, mullite and the quartz material.
According to the present invention; the insulating element of making by between electrode protecting device and electrode base ring, sandwiching material good by high temperature insulation characteristic, good thermal shock, can effectively prevent because of turn over slag, when material high-temperature electric conduction slag of collapsing splashes to the fiery problem of thorn that thorn fire problem that electrode protecting device and base ring junction cause and insulating material were lost efficacy and cause by scouring.In addition; according to the present invention; by adopting according to the insulating element for self-baking electrode protection device of the present invention; can effectively strengthen apparatus insulated effect; avoid because the fiery electrode protecting device that causes of equipment thorn leaks, body of heater band electrification, and prevent that cooling device lost efficacy, shuts down, thereby reduced maintenance cost; improve equipment operation rate, increased economic benefit.
Description of drawings
Accompanying drawing shows embodiments of the invention with specification, and accompanying drawing is used for explaining principle of the present invention together with the description.
Fig. 1 shows the structure of the self-baking electrode of prior art.
Fig. 2 shows the amplification diagram of the A part of the self-baking electrode among Fig. 1.
Fig. 3 A shows the vertical view of the insulating element among Fig. 2.
Fig. 3 B shows the vertical view of each part of the insulating element among Fig. 2.
Fig. 3 C shows insulating element among Fig. 1 and the end view of electrode protecting device.
Fig. 4 shows the amplification diagram according to the partial structurtes of self-baking electrode of the present invention.
Fig. 5 A shows the vertical view of the insulating element among Fig. 4.
Fig. 5 B shows the vertical view according to each part of each part of insulating element of the present invention and electrode protecting device.
Fig. 5 C shows the end view according to insulating element of the present invention and electrode protecting device.
Embodiment
Hereinafter, describe with reference to the accompanying drawings according to some exemplary embodiment of the present invention.For clarity, omitted understanding the present invention's some elements that are not absolutely necessary fully.In addition, identical label represents identical element all the time.
As the cutaway view of the illustrative examples of desirable embodiment of the present invention (and intermediate structure) embodiments of the invention are described in this reference.Like this, the change of shape of the example that the variation by manufacturing technology and/or tolerance causes for example can appear in expectation.Therefore, embodiments of the invention should not be understood to be limited to the concrete shape in the zone shown in this, and should comprise the shape distortion that is for example caused by manufacturing.Therefore, the zone that illustrates in the drawings is actually schematically, and their shape is not intended to illustrate the true form in the zone of device, also is not intended to limit the scope of the invention.
Identical with primary structure according to the self-baking electrode of prior art according to the primary structure of self-baking electrode of the present invention.As shown in Figure 1, self-baking electrode according to the present invention comprises electrode shell 1, Electrode Fluctuation Device 2, electrode heating apparatus 3, electrode protecting device 4, base ring pull bar 5, electrode base ring 6 and welding tip 7.Except insulating element 8, identical with primary structure according to the self-baking electrode of prior art according to the primary structure of self-baking electrode of the present invention, therefore no longer same parts is given unnecessary details at this.
Insulating element according to self-baking electrode protection device of the present invention is to carry out improved basis at the insulating element to traditional self-baking electrode to carry out.Describe below with reference to accompanying drawings the present invention in detail.
Fig. 4 shows the amplification diagram according to the partial structurtes of self-baking electrode of the present invention.Fig. 5 A shows the vertical view of the insulating element 8 among Fig. 4, and Fig. 5 B and Fig. 5 C show respectively vertical view and the end view according to each part of insulating element of the present invention.
Electrode protecting device 4 formed by a plurality of fan-shaped section and be arranged on electrode around, electrode protecting device 4 is arranged on the electrode base ring 6 and by base ring pull bar 5 and supports.As shown in Figure 4, the insulating element 8 of groove shapes is arranged between electrode protecting device 4 and the electrode base ring 6, thereby the bottom of electrode protecting device 4 can be wrapped in the insulating element 8.The fan-shaped bottom of electrode protecting device 4 is embedded in the insulating element 5 of groove shapes, shown in Fig. 5 A and Fig. 5 C.
Specifically, insulating element 8 not only is arranged on the bottom of electrode protecting device 4, also is arranged on the side of electrode protecting device 4.That is, according to the insulating element 8 in the self-baking electrode of the present invention have certain height be centered around electrode protecting device 4 around.In the present invention, the insulating element 8 of self-baking electrode is selected a kind of the making in aluminium oxide ceramics class material, mullite and the quartz material.Because the working temperature of aluminium oxide ceramics class material, mullite and quartz material is all more than 1400 ℃; high-temperature insulation is effective; good thermal shock; anti-scour property is good; long service life; so compare with the protective device of traditional self-baking electrode, can prevent better thorn fire phenomenon between electrode protecting device 4 and the electrode base ring 6 according to the insulating element of self-baking electrode of the present invention.
Specifically, electrode protecting device 4 partly forms a cylinder-like structure by the identical a plurality of flats of shape, and the each several part of electrode protecting device 4 all is fixed on the electrode base ring 6, whole electrode base ring 6 by several identical structures form one circular; Correspondingly, insulating element 8 also forms Baltimore groove by a plurality of parts identical with the component part quantity of electrode protecting device 4 and is installed between the bottom and electrode base ring 6 of each fan-shaped part of electrode protecting device 4.In one embodiment of the invention, electrode protecting device 4 is comprised of five block-shaped identical water cooling plants and is installed in respectively on the corresponding electrode base ring 6, and insulating element 8 also is comprised of corresponding five parts and is installed between electrode protecting device and the electrode base ring.Correspondingly, insulating element 8 is comprised of five identical parts of shape, shown in Fig. 5 B.Although insulating element 8 illustrated in the accompanying drawings is comprised of five parts, the invention is not restricted to this, as long as the quantity of the part of the insulating element in the self-baking electrode of the present invention is identical with the quantity of the part of electrode protecting device 4.At length say; as long as electrode protecting device can form a complete cylinder-like structure and wrap electrode; electrode protecting device 4 can also be comprised of a plurality of parts such as the identical two parts of shape, three parts, four parts or six parts; corresponding with it; insulating element 8 also can be comprised of a plurality of Baltimore grooves such as the identical two parts of shape, three parts, four parts or six parts, to surround electrode protecting device 4.
The purpose that insulate better in order to reach the protective device that makes self-baking electrode; in the present invention; the thickness a of the each several part of insulating element 8 and c are in the scope of 10mm~25mm; the length b of the each several part of insulating element 8 is in the scope of 15mm~35mm; the height d of the each several part of insulating element 8 is in the scope of 20mm~45mm, shown in Fig. 5 C.Here; shown in Fig. 5 C; the thickness a of insulating element 8 refers to the thickness of this part between electrode protecting device 4 and electrode base ring 6 of insulating element; the thickness c of insulating element 8 refers to this part the thickness that is positioned at electrode protecting device 4 sides of insulating element; the length b of insulating element 8 refers to this part length of the bottom that is arranged on electrode protecting device 4 of insulating element, the length of the part parallel with electrode protecting device 4 that the height c of insulating element 8 refers to insulating element.
More particularly, in the present invention, if the groove thickness a<10mm of insulating element 8, then insulating element 8 is too thin, thereby does not reach insulation effect, and intensity is also inadequate; If the groove thickness a>25mm of insulating element 8, then insulating element 8 is too thick, and weight is larger, thereby is unfavorable for that the dismounting maintenance has also caused waste of material.Therefore the size Selection principle stack pile a of the thickness c of insulating element 8 no longer gives unnecessary details it.The groove length b size of insulating element 8 is by the shape decision of electrode base ring 6, if groove length b<15mm, then insulating element 8 can not fill up electrode base ring 6 fully; On the contrary, if groove length b>35mm, then insulating element 8 may exceed the scope of electrode base ring 6.If the height d<20mm of insulating element 8, guard electrode protective device 4 well then, namely slag still might directly splash on the electrode protecting device 4; On the contrary, if height d>45mm, then insulating element 8 is oversize, and weight is larger, is unfavorable for that the dismounting maintenance has also caused waste of material.
The insulating element of self-baking electrode protection device of the present invention is described below in conjunction with embodiment.
Comparative Examples:
The self-baking electrode of prior art is tested in the AC titanium slag melting electric furnace system of 25.5MW, and insulating element is comprised of 5 identical shaped parts and is made by the phlogopite material.Specifically being of a size of of the each several part of insulating element: a=10mm, b=15mm.After test, the result shows, electrode system accounts for 50% of total failare rate because of the failure rate of stinging fire and causing; Using the useful life of the insulating element of phlogopite material is 30 days.
Embodiment 1:
To be used for self-baking electrode according to insulating element of the present invention, and test in the AC titanium slag melting electric furnace system of 25.5MW, insulating element is comprised of six identical shaped parts and has replaced original phlogopite material with alumina ceramic material.Specifically being of a size of of the groove each several part of insulating element: a=10mm, b=15mm, c=10mm, d=20mm.After test, the result shows, electrode system has reduced 80% because of the failure rate of stinging fire and causing than Comparative Examples; The useful life of insulating element is than using the phlogopite material to increase by 60 days; Maintenance cost is reduced to 30% of Comparative Examples.
Embodiment 2:
To be used for self-baking electrode according to insulating element of the present invention, and test in the AC titanium slag melting electric furnace system of 25.5MW, electrode protecting device is comprised of four identical shaped parts and has replaced original phlogopite material with mullite.Specifically being of a size of of the groove each several part of insulating element 8: a=15mm, b=20mm, c=15mm, d=30mm.After test, the result shows, electrode system has reduced 83% because of the failure rate of stinging fire and causing than Comparative Examples; The useful life of insulating element is than using the phlogopite material to increase by 70 days; Maintenance cost is reduced to 27% of Comparative Examples.
Embodiment 3:
To be used for self-baking electrode according to insulating element of the present invention, and test in the AC titanium slag melting electric furnace system of 25.5MW, insulating element is comprised of three identical shaped parts and has replaced original phlogopite material with quartz material.Specifically being of a size of of the groove each several part of insulating element: a=25mm, b=35mm, c=20mm, d=45mm.After test, the result shows, electrode system has reduced 76% because of the failure rate of stinging fire and causing than Comparative Examples; The alumina insulation materials'use life-span is than using the phlogopite material to increase by 61 days; Maintenance cost is reduced to 35% of Comparative Examples.
By top Comparative Examples and embodiment and result of the test thereof as can be known; original insulating element 8 ' (seeing Fig. 2 to Fig. 3 C) just sandwiches flat phlogopite material between electrode base ring and the electrode protecting device; the material that collapses is arranged in stove; when turning over slag; the high-temperature electric conduction slag is easy to splash to base ring and electrode protecting device junction conduction electrode protective device and base ring; so that insulating material lost efficacy, cause stinging fiery problem.Insulation system after the improvement is that electrode protecting device is embedded in the groove that is formed by insulating element shown in accompanying drawing 5B; the bottom of electrode protecting device 4 can be wrapped in the insulating element 8; the conduction slag of having avoided splashing makes electrode base ring 6 and electrode protecting device 4 conductings, thereby has reduced dramatically the thorn fire accident of electrode protecting device 4.On the other hand, owing to having adopted the exotic material different from phlogopite, the insulation effect in hot environment is good according to the insulating element 8 of self-baking electrode of the present invention, good thermal shock, and anti-scour property is good, is difficult for being damaged by scouring.
Therefore; by adopting according to the insulating element for self-baking electrode protection device of the present invention; can effectively strengthen apparatus insulated effect; avoid because the fiery electrode protecting device that causes of equipment thorn leaks, body of heater band electrification; prevent that cooling device lost efficacy, shuts down; thereby reduced maintenance cost, improved equipment operation rate, increased economic benefit.
Claims (5)
1. insulating element that is used for the electrode protecting device of self-baking electrode; described electrode protecting device formed by a plurality of fan-shaped section and be arranged on electrode around; described electrode protecting device is arranged on the electrode base ring and by the base ring pull bar and supports; it is characterized in that; be provided with the insulating element of a groove shapes between described electrode protecting device and described electrode base ring, the fan-shaped bottom of described electrode protecting device is embedded in the insulating element of described groove shapes.
2. insulating element as claimed in claim 1 is characterized in that, described insulating element is by a kind of the making in alumina ceramic material, mullite and the quartz material.
3. insulating element as claimed in claim 1 is characterized in that, described insulating element is made of the identical a plurality of parts of shape, and the number of the part of described insulating element is identical with the number of the composition fan-shaped section of described electrode protecting device.
4. insulating element as claimed in claim 3, it is characterized in that, the thickness of the each several part of described insulating element is in the scope of 10mm to 25mm, the length of the each several part of described insulating element is in the scope of 15mm to 35mm, and the height of the each several part of described insulating element is in the scope of 20mm to 45mm.
5. insulating element as claimed in claim 3 is characterized in that, described insulating element is comprised of two, three, four, five or six identical parts of shape.
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CN102215614B (en) * | 2011-05-16 | 2012-12-05 | 江西赛维Ldk太阳能高科技有限公司 | Graphite electrode and polycrystalline ingot furnace |
CN107231715A (en) * | 2017-06-16 | 2017-10-03 | 石嘴山市荣华缘冶金有限责任公司 | Self-baking electrode forges roasting device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2158809Y (en) * | 1992-07-11 | 1994-03-16 | 余小平 | Electromembrane type electric-heating cup used in vehicle |
CN2793884Y (en) * | 2005-03-16 | 2006-07-05 | 江苏三星化工有限公司 | Insulating hanger with high-molecular material coating |
CN2819404Y (en) * | 2005-07-06 | 2006-09-20 | 无锡市沪安电线电缆有限公司 | Fireproofing electric cable |
CN101325828A (en) * | 2008-07-16 | 2008-12-17 | 攀钢集团钛业有限责任公司 | Self-baking electrode for large titanium slag electric furnace and production process thereof |
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2009
- 2009-11-23 CN CN 200910223810 patent/CN101720145B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2158809Y (en) * | 1992-07-11 | 1994-03-16 | 余小平 | Electromembrane type electric-heating cup used in vehicle |
CN2793884Y (en) * | 2005-03-16 | 2006-07-05 | 江苏三星化工有限公司 | Insulating hanger with high-molecular material coating |
CN2819404Y (en) * | 2005-07-06 | 2006-09-20 | 无锡市沪安电线电缆有限公司 | Fireproofing electric cable |
CN101325828A (en) * | 2008-07-16 | 2008-12-17 | 攀钢集团钛业有限责任公司 | Self-baking electrode for large titanium slag electric furnace and production process thereof |
Non-Patent Citations (1)
Title |
---|
JP特开平6-168783A 1994.06.14 |
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