CN103925792A - Handling method for situation after fracture of melt channel in upward smelting furnace - Google Patents
Handling method for situation after fracture of melt channel in upward smelting furnace Download PDFInfo
- Publication number
- CN103925792A CN103925792A CN201410152062.4A CN201410152062A CN103925792A CN 103925792 A CN103925792 A CN 103925792A CN 201410152062 A CN201410152062 A CN 201410152062A CN 103925792 A CN103925792 A CN 103925792A
- Authority
- CN
- China
- Prior art keywords
- channel
- water jacket
- water
- fracture
- furnace
- Prior art date
- 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.)
- Granted
Links
Landscapes
- Furnace Details (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a handling method for the situation after the fracture of a melt channel in an upward smelting furnace. The handling method comprises the following handling steps that (1) the liquid level of liquid copper in the whole upward smelting furnace is lowered to meet the requirement that the distance between the liquid level of the liquid copper and the bottom of the upward smelting furnace is about 200 mm, and the liquid copper is covered with charcoal; (2) current of an electric furnace with the fractured melt channel is cut off, an iron core and an energized coil in the electric furnace are disassembled, and cooling water in a water jacket of the electric furnace is cut off; (3) the water jacket of the electric furnace with the fractured melt channel is filled with high-temperature asbestos in a plugging mode, and then the two end faces of the water jacket are sealed; (4) the voltage of an inductor of an electric furnace without any fractured melt channels is boosted to 300 V, temperature rise is carried out for four hours, then, the voltage of the inductor is boosted to be within the range from 300 V to 380 V, and the temperature is controlled to be within the range from 1050 DEG C to 1200 DEG C; (5) the temperature of the part, at the position of the channel fracture of the melt channel, of the liquid copper is measured repeatedly; (6) the current which is cut off before is recovered, water feeding of the water jacket is carried out, the iron core which is disassembled before and the coil which is disassembled before are installed, and insulation of the inductor is carried out. According to the handling method for the situation after the fracture of the melt channel in the upward smelting furnace, the melt channel can be prevented from abnormally fracturing or the fractured melt channel can be recovered, the service life of the smelting furnace is prolonged, the cost is reduced, and benefits are increased.
Description
?
Technical field
The present invention relates to draw on a kind of the post-rift processing method of channel in smelting furnace.
Background technology
In current coloured industry, there is the application of core induction channel furnace more and more, be widely used in smelting furnace and the holding furnace of melting copper and copper alloy.Be characterized in the advantages such as heating is fast, efficiency is high, iron loss is few, environment friendly and pollution-free, site environment is good.
Using maximum is that continuous up-casting oxygen-free copper bar unit adopts 300kg to have core to respond to three disjunctor electric furnaces (being melting furnace and holding furnace), the transformer that its operation principle is equivalent to work under short-circuit condition, hot-wire coil is equivalent to the primary winding of transformer, and its channel is equivalent to the secondary coil of transformer.After primary winding energising, the metal in channel is heated owing to producing induced-current.When heat passes to burner hearth, make again the temperature of metal in its burner hearth constantly increase, cause metal molten.But the event of disconnected channel happens occasionally in process of production, once channel fracture can not full production Jiang Dui enterprise bring loss economically.
Common channel fracture mainly contains following situation:
1. channel fracture in new stove temperature-rise period
1.1 channel defects
In the casting process of channel, there are slag inclusion, pore, crackle, coarse grains, have drawing crack line etc., when heating up, channel is under the effect of thermal expansion, and channel produces certain stress, if defectiveness can be broken in weak spot at once.
1.2 brickworks are improper
Not tight at channel surrounding ramming mass, special between the bottom surface and water jacket of channel, ramming mass is more solid, can not there is loosening phenomenon, otherwise in intensification, particularly in voltage 150V and 180V, channel is rising when molten, copper liquid can ooze copper in loosening quartz, now the channel on top does not also melt completely, causes the loss of copper liquid, produces and lacks copper, channel top and the bottom can not be connected, cause channel fracture.
2. channel fracture in normal productive process
2.1 because apparatus failure causes tripping operation circut breaking, and operating personnel not in time do not find, power-on-reset at once again after finding has been spent a period of time and occurred the fracture of no current channel.This is mainly that power-off time is long, and channel is dried up, and cover is very near, makes channel cooling rapidly, and send suddenly after high voltage, and channel has little time transferring heat, and channel fracture, appears in channel rubescent fusing at once in the short time, and this is the channel crack conditions that misoperation causes.
2.2 because exogenous impurity causes channel fracture, and first is in charcoal, to have foul, as entered in stove together with mud, stone and tiny other particle foreign material etc., melts.At high temperature can generate silicide at once and mix and flow in channel with copper liquid, make the channel conduction of secondary coil undesired, cause electric current unstable and finally cause channel isolation to be ruptured.Second is that copper inside own has a lot of impurity to bring fusing into, also will cause channel fracture.As heavy metal in copper and micro-rare metal too high levels.In the middle of useless composition brass, a large amount of oxides enters in channel, it is slowly stung and be bonded in channel wall, makes gradually channel cross section diminish, and finally causes fracture.
3. excess Temperature causes channel fracture
Because temperature grasp is not in place, cause the long-time excess Temperature of copper liquid.The smelting temperature of general copper is controlled at 1050-1200 ℃, when temperature surpasses more than 1300 ℃, ramming mass quartz sand also there will be molten state or becomes grume, can separate out to floating from channel inwall surrounding, local formation melted knurl, channel cross section diminished, current reduction, cause serious obstruction, and fracture.
4. the channel fracture that equipment fault reasons such as (have a power failure, cut off the water) water jacket leak, coil is burnt auto-transformer, contactor opens circuit causes.In such situation, the probability of channel fracture is larger, because stove global copper liquid freezes, is difficult to fusing for the moment, like this must be in strict accordance with technological operation, as caused because of carelessness channel fracture.
After channel fracture, how solving, recover is in whole industry, is also the practical problem that each enterprise faces, and is also the difficult problem that urgent need will solve.If can avoid the abnormal fracture of channel or the channel of fracture " is come back to life ", not only can return to normal production, and can retrieve economic losses, raise the efficiency.The present invention analyzes the reason of channel fracture in conjunction with drawing stove use experience on for many years, has carried out bold practice and trial in production practices, by one long channel of rupture time process, make its Power resumption, normally produce.
Summary of the invention
The object of the invention is to provide on a kind of draws the post-rift processing method of channel in smelting furnace, and the present invention can make the abnormal fracture of channel or the channel of fracture is come back to life, and extends the service life of smelting furnace, cost-saving, increases the benefit.
In order to achieve the above object, technical scheme of the present invention is:
On draw the post-rift processing method of channel in smelting furnace, comprise following treatment step:
1) first there being core to respond to copper liquid in the whole stove of three disjunctor electric furnaces, being reduced to furnace bottom and playing 200mm left and right, and cover charcoal;
2) by the failure of current in the electric furnace of its Fracture channel, dismantle iron core and hot-wire coil in this electric furnace, close the cooling water of its water jacket;
3) stifled full with high chrysotile in the water jacket of the electric furnace of fracture channel, then water jacket both ends of the surface are shut;
4) the inductor voltage of the electric furnace of the channel that do not rupture is risen to 300V, and heat up 4 hours, and then voltage is risen to 300V-380V, and temperature is observed in attention simultaneously, be controlled at 1050-1200 ℃, prevent that channel from high temperature rupturing, as ammeter has shake, with rod iron channel bottom disclose back and forth several under, anti-stopping groove;
5) then repeatedly measure the temperature of the disconnected ditch position copper liquid of channel, that is to say the channel that whole furnace is raise to melt disconnected ditch, be melted to breaking part, reach and interconnect;
6) the electric current Power resumption cutting off before, and carry out water jacket water flowing work, the iron core and the coil that before finally installing, disassemble, carry out inductor insulation, disconnected ditch current response is observed in energising, when ammeter has electric current to show, shows that the disconnected ditch part of channel communicates.
In described step 6), water jacket water flowing work refers to when changing water jacket by changing water jacket technological operation, when not changing water jacket when water inlet, water directly can not be put into water jacket because water jacket now temperature is very high, once water inlet produces water vapour at once, can cause water jacket distortion to be scrapped; Be continuous drop water inlet, the steam of water jacket the inside slowly outwards arranged, and then slowly added big yield, after waiting return pipe there are flowing out, just can open big yield to water jacket water flowing.
The invention has the beneficial effects as follows: of the present inventionly draw the post-rift processing method of channel in smelting furnace on a kind of, can make the abnormal fracture of channel or the channel of fracture " is come back to life ", extend the service life of smelting furnace, cost-saving, increase the benefit.
The specific embodiment
?
Embodiment 1
On the present embodiment a kind of, draw the post-rift processing method of channel in smelting furnace, comprise following treatment step:
1) first there being core to respond to copper liquid in the whole stove of three disjunctor electric furnaces, being reduced to furnace bottom and playing 200mm left and right, and cover charcoal;
2) by the failure of current in the electric furnace of its Fracture channel, dismantle iron core and hot-wire coil in this electric furnace, close the cooling water of its water jacket;
3) stifled full with high chrysotile in the water jacket of the electric furnace of fracture channel, then water jacket both ends of the surface are shut;
4) the inductor voltage of the electric furnace of the channel that do not rupture is risen to 300V, and heat up 4 hours, and then voltage is risen to 300V-380V, and temperature is observed in attention simultaneously, be controlled at 1050-1200 ℃, prevent that channel from high temperature rupturing, as ammeter has shake, with rod iron channel bottom disclose back and forth several under, anti-stopping groove;
5) then repeatedly use the temperature of the disconnected ditch position copper liquid of thermocouple measurement channel, that is to say the channel that whole furnace is raise to melt disconnected ditch, be melted to breaking part, reach and interconnect;
6) the electric current Power resumption cutting off before, and carry out water jacket water flowing work, the iron core and the coil that before finally installing, disassemble, carry out inductor insulation, disconnected ditch current response is observed in energising, when ammeter has electric current to show, shows that the disconnected ditch part of channel communicates.In described step 6), water jacket water flowing work refers to when changing water jacket by changing water jacket technological operation, when not changing water jacket when water inlet, water directly can not be put into water jacket because water jacket now temperature is very high, once water inlet produces water vapour at once, can cause water jacket distortion to be scrapped; Be continuous drop water inlet, the steam of water jacket the inside slowly outwards arranged, and then slowly added big yield, after waiting return pipe there are flowing out, just can open big yield to water jacket water flowing.On the present embodiment a kind of, draw the post-rift processing method of channel in smelting furnace, can make the abnormal fracture of channel or the channel of fracture " is come back to life ", extend the service life of smelting furnace, cost-saving, increase the benefit.
Claims (2)
1. on, draw the post-rift processing method of channel in smelting furnace, it is characterized in that: comprise following treatment step:
1) first there being core to respond to copper liquid in the whole stove of three disjunctor electric furnaces, being reduced to furnace bottom and playing 200mm left and right, and cover charcoal;
2) by the failure of current in the electric furnace of its Fracture channel, dismantle iron core and hot-wire coil in this electric furnace, close the cooling water of its water jacket;
3) stifled full with high chrysotile in the water jacket of the electric furnace of fracture channel, then water jacket both ends of the surface are shut;
4) the inductor voltage of the electric furnace of the channel that do not rupture is risen to 300V, and heat up 4 hours, and then voltage is risen to 300V-380V, and temperature is observed in attention simultaneously, be controlled at 1050-1200 ℃, prevent that channel from high temperature rupturing, as ammeter has shake, with rod iron channel bottom disclose back and forth several under, anti-stopping groove;
5) then repeatedly measure the temperature of the disconnected ditch position copper liquid of channel, that is to say the channel that whole furnace is raise to melt disconnected ditch, be melted to breaking part, reach and interconnect;
6) the electric current Power resumption cutting off before, and carry out water jacket water flowing work, the iron core and the coil that before finally installing, disassemble, carry out inductor insulation, disconnected ditch current response is observed in energising, when ammeter has electric current to show, shows that the disconnected ditch part of channel communicates.
2. as claimed in claim 1ly draw the post-rift processing method of channel in smelting furnace on a kind of, it is characterized in that: in described step 6), water jacket water flowing work refers to when changing water jacket by changing water jacket technological operation, when not changing water jacket water inlet, water directly can not be put into water jacket, because water jacket now temperature is very high, once water inlet produces water vapour at once, can cause water jacket distortion to be scrapped; Be continuous drop water inlet, the steam of water jacket the inside slowly outwards arranged, and then slowly added big yield, after waiting return pipe there are flowing out, just can open big yield to water jacket water flowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152062.4A CN103925792B (en) | 2014-04-16 | 2014-04-16 | One is drawn the post-rift processing method of channel in smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152062.4A CN103925792B (en) | 2014-04-16 | 2014-04-16 | One is drawn the post-rift processing method of channel in smelting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103925792A true CN103925792A (en) | 2014-07-16 |
| CN103925792B CN103925792B (en) | 2015-08-19 |
Family
ID=51144093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410152062.4A Expired - Fee Related CN103925792B (en) | 2014-04-16 | 2014-04-16 | One is drawn the post-rift processing method of channel in smelting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103925792B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611221A (en) * | 2020-12-28 | 2021-04-06 | 无锡超洲科技有限公司 | Emergency first-aid method for breakage of melting channel of up-drawing copper melting furnace |
| CN115493402A (en) * | 2022-08-29 | 2022-12-20 | 金川集团股份有限公司 | Method for solidification and secondary melting of melting channel of power frequency induction furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718491B (en) * | 2009-12-14 | 2011-06-29 | 洛阳双瑞达特铜有限公司 | Process method for reopening old furnace of cored line-frequency induction electric furnace for producing copper-nickel alloy |
| CN102798289A (en) * | 2012-06-25 | 2012-11-28 | 新兴铸管（浙江）铜业有限公司 | Emergency method for channel breakage of power frequency cored induction electric furnace for pure copper smelting |
| CN102901352A (en) * | 2012-11-01 | 2013-01-30 | 洛阳双瑞达特铜有限公司 | Method for repairing melting groove copper mold for inductor of core frequency induction furnace |
-
2014
- 2014-04-16 CN CN201410152062.4A patent/CN103925792B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718491B (en) * | 2009-12-14 | 2011-06-29 | 洛阳双瑞达特铜有限公司 | Process method for reopening old furnace of cored line-frequency induction electric furnace for producing copper-nickel alloy |
| CN102798289A (en) * | 2012-06-25 | 2012-11-28 | 新兴铸管（浙江）铜业有限公司 | Emergency method for channel breakage of power frequency cored induction electric furnace for pure copper smelting |
| CN102901352A (en) * | 2012-11-01 | 2013-01-30 | 洛阳双瑞达特铜有限公司 | Method for repairing melting groove copper mold for inductor of core frequency induction furnace |
Non-Patent Citations (2)
| Title |
|---|
| 吴予才: ""采用"熔沟冷结法"修理大型有芯感应电炉实践"", 《云南冶金》 * |
| 周俊芳等: ""浅谈水平连铸感应电炉熔沟断裂"", 《有色金属加工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611221A (en) * | 2020-12-28 | 2021-04-06 | 无锡超洲科技有限公司 | Emergency first-aid method for breakage of melting channel of up-drawing copper melting furnace |
| CN115493402A (en) * | 2022-08-29 | 2022-12-20 | 金川集团股份有限公司 | Method for solidification and secondary melting of melting channel of power frequency induction furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103925792B (en) | 2015-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103994663B (en) | A kind of method extending medium-frequency induction furnace lining durability | |
| CN109631588B (en) | A kind of method for maintaining of all-electric melting kiln | |
| CN201954955U (en) | Structure of medium-frequency induction electric furnace | |
| CN103925792A (en) | Handling method for situation after fracture of melt channel in upward smelting furnace | |
| CN102206032B (en) | Detachable optical glass successive melting furnace | |
| CN102878805A (en) | Method for stopping and opening power frequency cored induction copper melting furnace for red copper | |
| CN103951162A (en) | Device for cooling erodible part of flat glass melting furnace tank wall | |
| KR100822285B1 (en) | Glass melting apparatus | |
| CN110462321A (en) | Top for electric arc furnaces, metallurgical furnace or refining furnace carries furnace roof and its system | |
| CN210773400U (en) | Induction smelting crucible | |
| CN201867070U (en) | Furnace door water-cooled end wall of roller hearth soaking furnace | |
| CN215176895U (en) | Induction heating discharging system for high-temperature melting furnace | |
| CN102618301B (en) | Water seal device suitable for high-temperature and high-thermal environment of dry quenching coke furnace | |
| KR101075452B1 (en) | Glass melting furnace | |
| KR20100059378A (en) | Apparatus and method for tapping melts in plasma torch melter | |
| KR101159968B1 (en) | Cooling Panel of Electric Furnace | |
| CN201026520Y (en) | Horizontal conticaster | |
| CN103286474A (en) | Special brazing filler metal for fusion reactor cooling pipe cryogenic environment | |
| CN105509475A (en) | High-sealability high-temperature resistant gate and use method thereof | |
| CN106623709A (en) | Forging process of high-temperature corrosion-resisting flange forge piece | |
| CN104596317A (en) | Power frequency core electric furnace production stop and production recovery cold start boiler melting start process in zinc casting | |
| Mulder et al. | Simultaneous Preheating and Fast Restart of 50 Aluminium Reduction Cells in an Idled Potline: A new soft restart technique for a potline | |
| JPH0486480A (en) | Hearth electrode in dc electric furnace | |
| CN104032149B (en) | Method for prolonging service life of air bricks of rotary anode furnace | |
| PL238367B1 (en) | Method of increasing the temporary creep resistance of cobalt alloy castings, in particular gas turbines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20180416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |