CN101274364A - Furnace for converting and casting oxygen-free copper ingot - Google Patents
Furnace for converting and casting oxygen-free copper ingot Download PDFInfo
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- CN101274364A CN101274364A CNA2008100615602A CN200810061560A CN101274364A CN 101274364 A CN101274364 A CN 101274364A CN A2008100615602 A CNA2008100615602 A CN A2008100615602A CN 200810061560 A CN200810061560 A CN 200810061560A CN 101274364 A CN101274364 A CN 101274364A
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Abstract
The invention provides a continuous blowing and casting furnace of oxygen-free copper ingots, which pertains to the technical field of manufacturing metal smelting and casting equipment. The furnace essentially comprises a furnace shell (3) which is externally coated with refractory bricks (1), a smelting furnace (4) and a deoxidation furnace (10) which are provided with an electric inductive heater (17) at the bottom and arranged in the furnace shell (3) in parallel, a bottom blowing chute (19) which is provided with gas permeable bricks (22) at the bottom and arranged between the smelting furnace (4) and the deoxidation furnace (10), a bottom blowing furnace end (11) which is provided with a casting gate (20) and bottom blowing bricks (12) at the bottom and connected with the deoxidation furnace (10), a diversion trench (21) which is distributed in an 'S' shape and arranged in the bottom blowing furnace end (11), a smelting furnace cover (5) arranged at the upper part of the smelting furnace (4) and a deoxidation furnace cover (9) which is provided with a vent (8) and arranged at the upper part of the deoxidation furnace (10), etc. The whole structure of the furnace has reasonable design, convenient operation, low cost, being stable and reliable and can effectively reduce the oxygen content and the casting cost of oxygen-free copper, thereby being easy to form mass production.
Description
Technical field
The present invention relates to a kind of furnace for converting and casting oxygen-free copper ingot, belong to the manufacturing technology field of Metal Melting Casting Equipment.
Background technology
The conductance of fine copper is only second to silver, and price is far below silver.Therefore fine copper is widely used in fields such as electrician, electronics as conductive material after melting and casting and processing.But copper combines with oxygen easily when high temperature and forms cuprous oxide, the cuprous crystal boundary place that is distributed in of solidification and crystallization rear oxidation, and the rising of oxygen content descends the conductance of copper in the copper, can not reach the due conductance more than 100% of fine copper.Oxygen content 〉=50PPm in the pure copper material of the melting and casting device fabrication that employing is conventional, and along with the development of electronics, communications industry, especially the pure copper material of the high conduction of low residual oxygen of usefulness such as magnetic control element, radio-frequency cable, electron tube is led the needs of high-fidelity for guaranteeing height.Require then that cupric contains below the oxygen 5ppm conductance 〉=101% more than 99.99% in the material.
The production method of oxygen-free copper ingot casting and strand mainly contains vacuum melting casting and the casting of conventional melting up-drawing method at present.Vacuum melting is that smelting furnace and Casting Equipment are arranged in the airtight box hat, vacuumize then, the melting of copper and casting are remained under the vacuum state to be carried out, reaching the purpose of secluding air and deoxygenation, but this method equipment relative complex, operation inconvenience, lumber recovery is low, the production cost height should not form the large-scale production of continuous batchization, especially is subjected to the influence of equipment to make the fine copper oxygen content of production be difficult for keeping continous-stable.It is after adopting conventional smelting furnace with the copper fusing that up-drawing method is produced the oxygen-free copper strand, draw bar is inserted in the copper liquid behind pinch roll that passes through draw-gear down and graphite-pipe crystallizer by last, clamp pinch roll then, utilize draw-gear that draw bar is drawn with the copper proposition and by graphite-pipe crystallizer solidification and crystallization according to certain temperature and speed from bottom to top, owing to shrink during the copper solidification and crystallization, form the negative pressure of moment, the discharging of oxygen when being beneficial to copper liquid and solidifying, and realize reducing the purpose of oxygen.But this method only can be reduced to 7～10ppm with oxygen content limitedly, and can not be reduced to below the 5ppm.And only can produce low and middle-grade products of small dimension.
Summary of the invention
The purpose of this invention is to provide a kind of reasonable in design, can effectively reduce oxygen-free copper oxygen content and the casting cost furnace for converting and casting oxygen-free copper ingot,
The present invention is a furnace for converting and casting oxygen-free copper ingot, it is characterized in that comprising the furnace shell of outsourcing refractory brick, place the smelting furnace and the deoxidation stove of the charged induction heater in bottom that is set up in parallel in the furnace shell, place the bottom blowing chute of band air brick in bottom between smelting furnace and the deoxidation stove, link to each other with the deoxidation stove bottom blowing burner of bottom band casting gate and bottom blowing brick places the guiding gutter in the bottom blowing burner.
Guiding gutter in the described bottom blowing burner can be serpentine and distribute.
The top of described smelting furnace and deoxidation stove also can be respectively equipped with the deoxidation bell of melting bell and band exhaust outlet.
Described electric induction heater can be by placing indoor iron core of furnace bottom and coil, around the formations such as channel of furnace bottom chamber.The coil of described furnace bottom chamber also can be provided with water collar outward.
The present invention is reasonable in design, the mode of the continuous smelting-blowing that adopt smelting furnace, deoxidation stove, place the bottom blowing chute of band air brick in bottom between smelting furnace and the deoxidation stove, combines with the bottom blowing burner of mutually related guiding gutter of deoxidation stove and bottom blowing brick, the air blowing point of tough cathode continuous fusing back air brick bottom the bottom blowing chute in smelting furnace continues to enter the deoxidation stove, and this moment, copper liquid obtained purification for the first time, the deoxidation degassing; The guiding gutter that copper liquid in the deoxidation stove is formed by a plurality of air blowing points makes copper liquid obtain the further deoxidation degassing and purification.Do not need vacuum plant, simple in structure, easy to operate, cost is low, and is reliable and stable, is easy to form large-scale production.The oxygen content of the oxygen-free copper ingot blank of producing by the present invention, not only can stablize and reach below the 5ppm, also can reach below the 3ppm, can satisfy the needs that contain the pure copper material that oxygen 5ppm is following, the low residual oxygen height of conductance 〉=101% conducts electricity of usefulness such as magnetic control element, radio-frequency cable, electron tube.
Description of drawings
Fig. 1 is an overall structure cutaway view of the present invention;
Fig. 2 is an A-A face structure cutaway view shown in Figure 1.
Among the figure, 1 is refractory brick, and 2 is refractory material, and 3 is furnace shell, 4 is smelting furnace, and 5 are the melting bell, and 6 is tough cathode, and 7 is charge door, 8 is exhaust outlet, and 9 are the deoxidation bell, and 10 are the deoxidation stove, and 11 are the bottom blowing burner, 12 are the bottom blowing brick, and 13 is the furnace bottom chamber, and 14 is iron core, and 15 is coil, 16 is water collar, and 17 is electric induction heater, and 18 is channel, and 19 are the bottom blowing chute, 20 is casting gate, and 21 is guiding gutter, and 22 is air brick.
The specific embodiment
The present invention is mainly by the furnace shell 3 of outsourcing refractory brick 1 and refractory material 2, place the smelting furnace 4 and the deoxidation stove 10 of the charged induction heater 17 in the bottom that is set up in parallel in the furnace shell 3, place the bottom blowing chute 19 of band air brick 22 in bottom between smelting furnace 4 and the deoxidation stove 10, the bottom blowing burner 11 of bottom band casting gate 20 and bottom blowing brick 12 links to each other with deoxidation stove 10, place and be the guiding gutter 21 that serpentine distributes in the bottom blowing burner 11, place the melting bell 5 on smelting furnace 4 tops, place deoxidation bell 9 formations such as grade of deoxidation stove 10 top band exhaust outlets 8.Electric induction heater 17 around the channel 18 of furnace bottom chamber 13, places water collar 16 formations such as grade outside 13 coils 15 of furnace bottom chamber by the iron core 14 and the coil 15 that place in the furnace bottom chamber 13.
Below in conjunction with embodiment the present invention is further described:
1, tough cathode 6 is entered in the smelting furnace 4 by charge door 7, under the effect of electric induction heater 17, melt, coil 15 external power supplys in the furnace bottom chamber 13, the energising back produces magnetic field and changes electric energy into iron core 14, make the copper heat fused in the channel 18, carry out heat exchange with the tough cathode 6 in the smelting furnace 4, make the fusion temperature of tough cathode 6 reach 1083 ℃.Copper liquid after the fusing heats up and reaches 1120～1200 ℃, enter insulation in the deoxidation stove 10 by bottom blowing chute 19 then, guarantee that temperature is 1120～1180 ℃, the mist of while CO gas or 10～70% carbon monoxide and 30～90% nitrogen, air brick 22 by bottom blowing chute 19 bottoms and refractory material are the disperse shape and enter in the copper liquid in the bottom blowing chute 19, and enter in the deoxidation stove 10 thereupon.This moment the generation carbon dioxide that reacts of the free oxygen in the copper liquid and oxide and carbon monoxide in bottom blowing chute 19 and deoxidation stove 10, behind the deoxygenation remaining hydrogen, carbon dioxide and other gas and carbon monoxide more than needed is assembled mutually or with the mutual adsorpting aggregation of nitrogen that feeds after form bubble and from melt, float, overflow by the exhaust outlet on the deoxidation bell 98, realize the deoxidation degassing of phase I.
2, enter bottom convertor head 11 after the deoxidation degassing of the copper liquid in the heat-preserving deoxidizing stove 10 through the phase I, during the copper liquid guiding gutter 21 that serpentine distributes in by the bottom blowing burner, the mist of CO gas or 10～70% carbon monoxide and 30～90% nitrogen bottom blowing brick 12 and the refractory material by the guiding gutter bottom is the disperse shape and enters in the guiding gutter 21, copper liquid in the guiding gutter 21 is carried out the deoxidation degassing of second stage, so that copper liquid further purifies.
3, the copper liquid after the second stage deoxidation degassing enters crystallizer by the casting gate in the bottom blowing burner 11 20, between crystallizer and casting gate 20 sealed hollow is arranged and has pure carbon monoxide gas to continue to feed, and does not contact with air to guarantee copper liquid.
4, oxygen content can reach below the 5ppm in the anaerobic copper ingot of producing thus, even can reach below the 3ppm.The copper conductance can reach 101～102%IACS.
Claims (5)
1, a kind of furnace for converting and casting oxygen-free copper ingot, it is characterized in that comprising the furnace shell (3) of outsourcing refractory brick (1), place the smelting furnace (4) and the deoxidation stove (10) of the charged induction heater in bottom (17) that is set up in parallel in the furnace shell (3), place the bottom blowing chute (19) of bottom band air brick (22) between smelting furnace (4) and the deoxidation stove (10), link to each other with deoxidation stove (10) the bottom blowing burner (11) of bottom band casting gate (20) and bottom blowing brick (12) places the interior guiding gutter (21) of bottom blowing burner (11).
2,, it is characterized in that the guiding gutter (21) in the described bottom blowing burner (11) is the serpentine distribution by the described furnace for converting and casting oxygen-free copper ingot of claim 1.
3,, it is characterized in that the top of described smelting furnace (4) and deoxidation stove (10) also is respectively equipped with the deoxidation bell (9) of melting bell (5) and band exhaust outlet (8) by the described furnace for converting and casting oxygen-free copper ingot of claim 1.
4,, it is characterized in that described electric induction heater (17) by the iron core (14) and the coil (15) that place in the furnace bottom chamber (13), around channel (18) formation of furnace bottom chamber (13) by the described furnace for converting and casting oxygen-free copper ingot of claim 1.
5,, it is characterized in that the outer water collar (16) that also is provided with of coil (15) of described furnace bottom chamber (13) by the described furnace for converting and casting oxygen-free copper ingot of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100615602A CN101274364B (en) | 2008-05-06 | 2008-05-06 | Furnace for converting and casting oxygen-free copper ingot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100615602A CN101274364B (en) | 2008-05-06 | 2008-05-06 | Furnace for converting and casting oxygen-free copper ingot |
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| CN101274364A true CN101274364A (en) | 2008-10-01 |
| CN101274364B CN101274364B (en) | 2011-03-16 |
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| CN2008100615602A Active CN101274364B (en) | 2008-05-06 | 2008-05-06 | Furnace for converting and casting oxygen-free copper ingot |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105682829A (en) * | 2013-11-13 | 2016-06-15 | 中岛巌 | Method for producing eutectic copper-iron alloy |
| CN107177738A (en) * | 2017-04-28 | 2017-09-19 | 重庆市永川区益锐机械有限责任公司 | Oxygen-free copper foundry furnace |
| CN107218807A (en) * | 2017-06-29 | 2017-09-29 | 马鞍山市兴隆铸造有限公司 | The circulation blowing of foundry furnace and cooling and dedusting device |
| CN107262692A (en) * | 2017-06-29 | 2017-10-20 | 马鞍山市兴隆铸造有限公司 | Casting boiler centrifugal casting detection casting device |
| CN107262693A (en) * | 2017-06-29 | 2017-10-20 | 马鞍山市兴隆铸造有限公司 | The smooth casting of pressure adjustable casting is dust-proof to make stove |
| CN107321966A (en) * | 2017-06-29 | 2017-11-07 | 马鞍山市兴隆铸造有限公司 | The continuous cutting foundry furnace of tubulose casting ingot |
| CN107321960A (en) * | 2017-06-29 | 2017-11-07 | 马鞍山市兴隆铸造有限公司 | Casting vacuum casting, which is quickly removed, uses foundry furnace |
| CN111304458A (en) * | 2020-03-27 | 2020-06-19 | 芜湖楚江合金铜材有限公司 | High accuracy red copper contact pin production is with deoxidization smelting unit |
Families Citing this family (1)
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| CN103148702A (en) * | 2013-03-13 | 2013-06-12 | 邵宏 | Energy-saving degassing holding furnace |
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2008
- 2008-05-06 CN CN2008100615602A patent/CN101274364B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105682829A (en) * | 2013-11-13 | 2016-06-15 | 中岛巌 | Method for producing eutectic copper-iron alloy |
| US10094001B2 (en) | 2013-11-13 | 2018-10-09 | Iwao Nakajima | Method for producing eutectic copper-iron alloy |
| CN105682829B (en) * | 2013-11-13 | 2019-04-12 | 中岛巌 | The manufacturing method of CFA |
| CN107177738A (en) * | 2017-04-28 | 2017-09-19 | 重庆市永川区益锐机械有限责任公司 | Oxygen-free copper foundry furnace |
| CN107218807A (en) * | 2017-06-29 | 2017-09-29 | 马鞍山市兴隆铸造有限公司 | The circulation blowing of foundry furnace and cooling and dedusting device |
| CN107262692A (en) * | 2017-06-29 | 2017-10-20 | 马鞍山市兴隆铸造有限公司 | Casting boiler centrifugal casting detection casting device |
| CN107262693A (en) * | 2017-06-29 | 2017-10-20 | 马鞍山市兴隆铸造有限公司 | The smooth casting of pressure adjustable casting is dust-proof to make stove |
| CN107321966A (en) * | 2017-06-29 | 2017-11-07 | 马鞍山市兴隆铸造有限公司 | The continuous cutting foundry furnace of tubulose casting ingot |
| CN107321960A (en) * | 2017-06-29 | 2017-11-07 | 马鞍山市兴隆铸造有限公司 | Casting vacuum casting, which is quickly removed, uses foundry furnace |
| CN111304458A (en) * | 2020-03-27 | 2020-06-19 | 芜湖楚江合金铜材有限公司 | High accuracy red copper contact pin production is with deoxidization smelting unit |
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| Publication number | Publication date |
|---|---|
| CN101274364B (en) | 2011-03-16 |
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Effective date of registration: 20230720 Address after: 730300 Southeast of the intersection of Huashan Road and Wujiang Street, Lanzhou New Area, Lanzhou, Gansu Province Patentee after: Gansu Hailiang New Energy Materials Co.,Ltd. Patentee after: ZHEJIANG HAILIANG Co.,Ltd. Address before: 311814, Zhejiang City, Zhuji province shop town Meizhou pond Patentee before: ZHEJIANG HAILIANG Co.,Ltd. |