CN102744257A - Device and process adopted for rod-making by continuous casting and continuous rolling of red impure copper - Google Patents
Device and process adopted for rod-making by continuous casting and continuous rolling of red impure copper Download PDFInfo
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- CN102744257A CN102744257A CN2012102393010A CN201210239301A CN102744257A CN 102744257 A CN102744257 A CN 102744257A CN 2012102393010 A CN2012102393010 A CN 2012102393010A CN 201210239301 A CN201210239301 A CN 201210239301A CN 102744257 A CN102744257 A CN 102744257A
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Abstract
The invention provides a device and a process adopted for rod-making by continuous casting and continuous rolling of red impure copper. The device adopted for rod-making by continuous casting and continuous rolling of red impure copper comprises a launder which tilts upwards and is provided with an electromagnetic field, and deoxidizer is contained in an inner wall of the launder. According to the process for the rod-making by the continuous casting and continuous rolling of red impure copper, on the basis of a prior rod-making process by continuous casting and continuous rolling of red impure copper, after steps of melting, oxidization and restoring, impurities are removed and oxygen content is lowered by further refining, and casting is carried out to increase surface quality, conductivity, plasticity and tensibility of a copper rod. The surface quality, conductivity, plasticity and tensibility of the copper rod manufactured by the device and the process provided by the invention are more excellent, and manufacturing cost is low.
Description
Technical field
The invention provides device and technology that a kind of purple copper continuous casting and rolling system bar adopts.
Background technology
Energy-saving and emission-reduction are long-term policies of national industry development.Waste and old copper utilizes again and has reduced waste pollution, has practiced thrift Limited resources, is the good thing of killing two birds with one stone.Purple copper continuous casting and rolling system bar technology is to utilize the advanced technologies of purple composition brass production of copper bar, and adopting purple composition brass is raw material, after the sorting, obtains copper liquid through fusing, oxidation, reduction, gets into the casting of continuous casting and rolling equipment, obtains the copper bar.The copper bar of purple copper continuous casting and rolling system bar explained hereafter is compared with the copper bar that traditional hot rolling method is produced, and has length length, energy-conservation joint amount, characteristics such as constant product quality, performance homogeneous, surface-brightening.Though adopt homemade continuous casting and rolling equipment low with purple composition brass production of copper bar production cost; But copper bar resistivity higher (0.017400 Ω m), plasticity relatively poor (percentage elongation 38%～42%), drawability is poor (moves to more than the Ф 1.0mm; Break end 2～3/ton), cause follow-up wire drawing difficulty, influence wire drawing efficient; Add that resistance is higher; Electric wire product with this copper bar production makes downstream in use cause great waste of energy, and causes product quality defective easily, has buried accident potential.
Summary of the invention
The present invention is directed to above-mentioned deficiency, the device and the technology that provide a kind of purple copper continuous casting and rolling system bar to adopt adopt copper bar surface quality, electric conductivity, plasticity and the drawability of this device and explained hereafter more excellent, and production cost are low.
The device that purple copper continuous casting and rolling system bar provided by the invention adopts comprises an acclivitous chute with electromagnetic field, and the chute inwall contains oxygen scavenger.
As the further improvement of device of the present invention, the acclivitous angle of said chute is for becoming 10 degree～30 degree angles with horizontal plane.
The purple copper continuous casting and rolling system bar technology of employing provided by the invention device as claimed in claim 1 may further comprise the steps:
A. sorting, batching;
B. fusing, oxidation, reduction;
C. electromagnetism refining: through acclivitous chute of copper flow warp of fusing, oxidation, reduction with electromagnetic field; Copper liquid in electromagnetic force effect lower edge chute to the upper reaches; Impurity in the copper liquid receives the reverse extruding force of copper liquid and gravity effect to dirty, and copper liquid is separated with impurity, removes impurity; Copper liquid contacts with the oxygen scavenger of chute inwall under the stirring action of electromagnetic field simultaneously, and oxygen is removed a part in the copper liquid;
D. continuous casting;
E. tandem rolling;
F. clean, reduction, lopping, spray be cured: the copper bar that shuts out is cured through surface clean, reduction, lopping, spray, finished product.
As the further improvement of technology of the present invention, copper liquid spectrum analysis and the gasmetry through the stokehold through fusing, oxidation, reduction are handled is lower than 99.90% like copper content; Oxygen content is greater than 0.055%; Then carry out secondary oxidation, reduction, greater than 99.90%, oxygen content is less than 0.055% until copper content.Add grain refiner (as containing cerium mischmetal), but the copper ingot bar crystal grain during the refinement direct casting improves plasticity, the drawability of copper bar, improves copper bar performance.During tandem rolling the emulsion of using in the continuous rolling process is carried out Magnetic filtration device, remove impurity such as iron powder, reduce the iron powder amount that is rolled into the copper bar.
The device that purple copper continuous casting and rolling system bar provided by the invention adopts comprises an acclivitous chute with electromagnetic field, and the chute inwall contains oxygen scavenger.The purple copper continuous casting and rolling system bar technology of employing said apparatus provided by the invention, through increasing the electromagnetism refinement step before the continuous casting, through the copper flow of fusing, oxidation, reduction through said apparatus; Copper liquid in electromagnetic force effect lower edge chute to the upper reaches; Impurity in the copper liquid receives the reverse extruding force of copper liquid and gravity effect to dirty, and copper liquid is separated with impurity, removes impurity; Copper liquid contacts with the oxygen scavenger of chute inwall under the stirring action of electromagnetic field simultaneously; Oxygen is removed a part in the copper liquid, thereby has reduced impurity and oxygen content in the copper liquid, has improved surface quality, electric conductivity, plasticity and the drawability of copper bar.In the continuous casting and rolling process, the continuous wearing and tearing of rolling mill bearing and roll make in the emulsion iron content higher, cause iron powder to be rolled into the top layer of bar, have influenced surface quality, electric conductivity, plasticity and the drawability of bar.Emulsion to using in the continuous rolling process is carried out Magnetic filtration device, removes impurity such as iron powder, thereby has significantly reduced the amount of the impurity such as iron powder that are rolled into the copper bar, has further improved surface quality, electric conductivity, plasticity and the drawability of copper bar.Copper bar through explained hereafter provided by the invention; Can reach copper content >=99.90%; Oxygen content 0.0048%～0.042%, percentage elongation 40%～45% is moved Ф 0.15mm to; Broken end is less than 5 tons/2, and resistivity and all the other indexs meet the electrician with copper cash base T2, TU2, T3 trade mark state quality standard; Thereby have better surface quality, electric conductivity, plasticity, drawability, improved wire drawing efficient, reduced the electric energy loss of downstream product circuit, practiced thrift the energy, eliminated accident potential.
Description of drawings
Fig. 1 is an electromagnetism purifier structural representation.
1-cell body among the figure (inner band contains the refractory material of oxygen scavenger), 2-solenoid, the 3-coverture done by reducing agent such as charcoal etc.; Copper liquid flows in the electromagnetism purifier in the direction of arrows.
Fig. 2 is a filter structure schematic representation.
2-filter among the figure, 21-casing, 22-screen pack, 211-fluid intake, 212-fluid issuing.
The specific embodiment
In the technology provided by the invention, with the existing identical step of purple copper continuous casting and rolling technology, any numerical value that routine is selected for use in the desirable industry of its technological parameter, the technological parameter of same steps as only as giving an example, should not be regarded as qualification of the present invention in following examples.
The purple composition brass of embodiment 1 adopts the spectral measurement sorting, 80 tons of fusings, oxidation, reduction furnace capacity, and the copper content 99.89% of the purple composition brass of this stove of batching back, lead content 150mg/kg, tin content 560mg/kg, nickel content 120mg/kg, all the other impurity contents are qualified.Add SiO
2Make flux, 1090 ℃ of fusion temperatures, fusing time 6.5 hours, slag making removal of impurities; Carry out oxidation, reduction processing with reverberatory furnace, 1180 ℃ of redox temperature, the oxygen that feeds 1.0MPa pressure is as oxidant, and oxidization time 4 hours adds pine as reducing agent, 6 hours recovery times.Sample analysis, copper content 99.91%, lead content 85mg/kg, tin content 420mg/kg, nickel content 108mg/kg, oxygen content 0.049%.Adopt electromagnetism purifier (Fig. 1) when above-mentioned copper liquid passes through electromagnetic field, the copper flow velocity is 0.15m/s, every liter of electromagnetic force 2200N that copper liquid receives.Copper liquid along oblique upper to angle for become 30 degree angles with horizontal plane.The inner refractory material that contains oxygen scavenger that covers of electromagnetism purifier cell body is as adding the carbon dust or the graphite cake and so on of packing in the refractory material of chute.Can add charcoal etc. in the coverture as reducing agent, copper liquid is during through the electromagnetism purifier, and the oxygen in the copper liquid reacts with the charcoal in the coverture, removes partial oxygen, and behind the electromagnetism purifier, oxygen content drops to 0.042%.Casting temperature is controlled at 1130～1150 ℃, about 810 ℃ of tandem rolling start rolling temperatures, about 200 ℃ of finishing temperatures, 5 hours tandem rolling time.Adopt filter (Fig. 2) that emulsion is filtered, remove impurity such as iron powder, the emulsion flow velocity through filter is 0.7m/min.This stove copper bar resistivity 0.01723 Ω m, percentage elongation 42% is moved Ф 0.15mm to, and the line broken end is 2 of 5 tonnages, and all the other indexs all meet industry standard.
What embodiment 2 and embodiment 1 were different is the copper content 99.90% of the purple composition brass in batching back
,Zinc content is 230mg/kg, and all the other impurity contents are qualified.Copper material adopts reverberatory furnace fusing, 1130 ℃ of fusion temperatures, fusing time 6 hours; Carry out oxidation, reduction processing with reverberatory furnace, 1130 ℃ of redox temperature, oxidization time 5 hours adopts natural gas to make reducing agent, 5 hours recovery times.Sample analysis, copper content is lower than 99.90%, carries out the oxidation second time, reduction, and after repeatedly oxidation, reduction, copper content is 99.92%
,Zinc content 58mg/kg, oxygen content 0.025%.Copper flow flow velocity when the electromagnetism purifier is 0.17m/s, every liter of electromagnetic force 2000N that copper liquid receives.Copper liquid along oblique upper to angle for become 26 degree angles with horizontal plane.Copper liquid oxygen content through the electromagnetism purifier drops to 0.019%.Casting temperature is controlled at 1120～1150 ℃, about 820 ℃ of tandem rolling start rolling temperatures, about 200 ℃ of finishing temperatures, 6 hours tandem rolling time.Emulsion flow velocity through filter is 0.75m/min.This stove copper bar resistivity 0.01721 Ω m, percentage elongation 42% is moved Ф 0.15mm to, and the line broken end is 1.5 of 5 tonnages, and all the other indexs all meet industry standard.
What embodiment 3 and embodiment 1 were different is, the copper content 99.94% of the purple composition brass in batching back, and nickel content is 122.5mg/kg, all the other impurity contents are qualified.The fusing of employing shaft furnace, 1100 ℃ of fusion temperatures, fusing time 6 hours is carried out oxidation, reduction processing, 1100 ℃ of redox temperature with converter.Sample analysis, each impurity content of copper liquid is qualified, copper content 99.94%, oxygen content 0.022%.Copper flow flow velocity when the electromagnetism purifier is 0.20m/s, every liter of electromagnetic force 1900N that copper liquid receives, copper liquid along oblique upper to angle for become 21 degree angles with horizontal plane.Copper liquid oxygen content through the electromagnetism purifier drops to 0.016%.Copper liquid through after the refining of electromagnetism purifier gets into the four-wheel conticaster, adopts optoelectronic induction or gravity sensing automatic casting, and temperature is controlled at 1130～1160 ℃, the product of must casting.About 830 ℃ of casting product tandem rolling start rolling temperatures, about 200 ℃ of finishing temperatures, 8 hours tandem rolling time.Emulsion flow velocity through filter is 0.85m/min.The copper bar that shuts out is cured through surface clean, reduction, lopping, spray, finished product.This stove copper bar resistivity 0.01715 Ω m, percentage elongation 43%.Move Ф 0.15mm to, the line broken end is 1 of 5 tonnage, and all the other indexs all meet industry standard.
What embodiment 4 and embodiment 1 were different is the copper content 99.95% of the purple composition brass in batching back, lead content 122mg/kg.Employing converter fusing, 1090 ℃ of fusion temperatures, fusing time 6.5 hours is carried out oxidation, reduction processing, 1160 ℃ of redox temperature with reverberatory furnace.Sample analysis, lead content 35mg/kg, copper content 99.96%, oxygen content 0.018%.Copper flow flow velocity when the electromagnetism purifier is 0.24m/s, every liter of electromagnetic force 1500N that copper liquid receives, copper liquid along oblique upper to angle for become 13 degree angles with horizontal plane.Copper liquid oxygen content through the electromagnetism purifier drops to 0.012%.Casting temperature is controlled at 1130～1150 ℃, about 840 ℃ of tandem rolling start rolling temperatures, about 200 ℃ of finishing temperatures, 6 hours tandem rolling time.Emulsion flow velocity through filter is 0.77m/min.This stove copper bar resistivity 0.01712 Ω m, percentage elongation 44% is moved Ф 0.15mm to, and the line broken end is 1 of 5 tonnage, and all the other indexs all meet industry. standard.
What embodiment 5 and embodiment 1 were different is the copper content 99.93.% of the purple composition brass in batching back, lead content 92mg/kg, tin content 365mg/kg.Employing converter fusing, 1180 ℃ of fusion temperatures, fusing time 6.8 hours is carried out oxidation, reduction processing, 1190 ℃ of redox temperature with reverberatory furnace.Sample analysis, lead content 42mg/kg, tin content 210mg/kg, copper content 99.95%, oxygen content 0.0092 %.Copper flow flow velocity when the electromagnetism purifier is 0.30m/s, every liter of electromagnetic force 1700N that copper liquid receives, copper liquid along oblique upper to angle for become 18 degree angles with horizontal plane.Copper liquid oxygen content through the electromagnetism purifier drops to 0.0048%.Casting temperature is controlled at 1140～1160 ℃, about 820 ℃ of tandem rolling start rolling temperatures, about 200 ℃ of finishing temperatures, 4 hours tandem rolling time.Emulsion flow velocity through filter is 0.82m/min.This stove copper bar resistivity 0.01709 Ω m, percentage elongation 45% is moved Ф 0.15mm to, and the line broken end is 0.5 of 5 tonnage, and all the other indexs all meet industry standard.
What embodiment 6 and embodiment 1 were different is the copper content 99.95% of the purple composition brass in batching back, lead content 161mg/kg, tin content 93mg/kg, nickel content 82mg/kg.Employing converter fusing, 1100 ℃ of fusion temperatures are carried out oxidation, reduction processing, 1200 ℃ of redox temperature with converter.Sample analysis, lead content 108mg/kg, tin content 58mg/kg, nickel content 62mg/kg, copper content 99.96%, oxygen content 0.0092%.Copper flow flow velocity when the electromagnetism purifier is 0.28m/s, every liter of electromagnetic force 1300N that copper liquid receives, copper liquid along oblique upper to angle for become 10 degree angles with horizontal plane.Copper liquid oxygen content through the electromagnetism purifier drops to 0.0048%.Casting temperature is controlled at 1140～1160 ℃, about 820 ℃ of tandem rolling start rolling temperatures, about 200 ℃ of finishing temperatures, 7 hours tandem rolling time.Emulsion flow velocity through filter is 0.80m/min.This stove copper bar resistivity 0.01699 Ω m, percentage elongation 45% is moved Ф 0.15mm to, and the line broken end is 0.4 of 5 tonnage, and all the other indexs all meet industry standard.
Claims (6)
1. the device that purple copper continuous casting and rolling system bar adopts comprises an acclivitous chute with electromagnetic field, and the chute inwall contains oxygen scavenger.
2. the device that purple copper continuous casting and rolling system bar according to claim 1 adopts is characterized in that: the acclivitous angle of said chute is for becoming 10 degree～30 degree angles with horizontal plane.
3. purple copper continuous casting and rolling system bar technology that adopts device as claimed in claim 1 may further comprise the steps:
A. sorting, batching;
B. fusing, oxidation, reduction;
C. electromagnetism refining: through acclivitous chute of copper flow warp of fusing, oxidation, reduction with electromagnetic field; Copper liquid in electromagnetic force effect lower edge chute to the upper reaches; Impurity in the copper liquid receives the reverse extruding force of copper liquid and gravity effect to dirty, and copper liquid is separated with impurity, removes impurity; Copper liquid contacts with the oxygen scavenger of chute inwall under the stirring action of electromagnetic field simultaneously, and oxygen is removed a part in the copper liquid;
D. continuous casting;
E. tandem rolling;
F. clean, reduction, lopping, spray be cured: the copper bar that shuts out is cured through surface clean, reduction, lopping, spray, finished product.
4. purple copper continuous casting and rolling system bar technology according to claim 2 is characterized in that: oxidation among the step b, reduction are carried out more than the secondary.
5. purple copper continuous casting and rolling system bar technology according to claim 2 is characterized in that: when oxidation and reduction, add grain refiner among the step b.
6. purple copper continuous casting and rolling system bar technology according to claim 2, step e carries out Magnetic filtration device to the emulsion of using in the continuous rolling process, removes impurity such as iron powder, reduces the iron powder amount that is rolled into the copper bar.
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| CN2012102393010A CN102744257A (en) | 2012-07-12 | 2012-07-12 | Device and process adopted for rod-making by continuous casting and continuous rolling of red impure copper |
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| CN2012102393010A CN102744257A (en) | 2012-07-12 | 2012-07-12 | Device and process adopted for rod-making by continuous casting and continuous rolling of red impure copper |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526043A (en) * | 2013-10-31 | 2014-01-22 | 湖南金龙国际铜业有限公司 | Purple mixed copper smelting and oxidation-reduction system |
| CN103567223A (en) * | 2013-10-20 | 2014-02-12 | 肇庆市弘达实业有限公司 | Continuous casting and rolling production technique for copper rods |
| CN103712437A (en) * | 2013-08-28 | 2014-04-09 | 新兴铸管（浙江）铜业有限公司 | Shaft furnace for copper melting and copper melting method |
| CN104593618A (en) * | 2015-01-06 | 2015-05-06 | 湖南金龙国际铜业有限公司 | High-conductivity ultrafine alloy regeneration copper rod and refining method thereof |
| CN104646420A (en) * | 2014-11-07 | 2015-05-27 | 新兴铸管（浙江）铜业有限公司 | Method for reducing cost of producing copper rod via continuous casting and continuous rolling |
| CN104646412A (en) * | 2014-11-07 | 2015-05-27 | 新兴铸管（浙江）铜业有限公司 | Method for improving surface quality of low-oxygen light copper rod with diameter of 8mm |
| CN111519037A (en) * | 2020-03-20 | 2020-08-11 | 四川博鑫铜业有限公司 | Process for producing low-oxygen copper rod from waste red impure copper |
| CN113477365A (en) * | 2021-07-09 | 2021-10-08 | 内蒙古高等级公路建设开发有限责任公司 | Steel slag stress decomposition and fragmentation processing device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712437A (en) * | 2013-08-28 | 2014-04-09 | 新兴铸管（浙江）铜业有限公司 | Shaft furnace for copper melting and copper melting method |
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| CN104593618A (en) * | 2015-01-06 | 2015-05-06 | 湖南金龙国际铜业有限公司 | High-conductivity ultrafine alloy regeneration copper rod and refining method thereof |
| CN111519037A (en) * | 2020-03-20 | 2020-08-11 | 四川博鑫铜业有限公司 | Process for producing low-oxygen copper rod from waste red impure copper |
| CN113477365A (en) * | 2021-07-09 | 2021-10-08 | 内蒙古高等级公路建设开发有限责任公司 | Steel slag stress decomposition and fragmentation processing device |
| CN113477365B (en) * | 2021-07-09 | 2022-05-03 | 内蒙古高等级公路建设开发有限责任公司 | Steel slag stress decomposition and fragmentation processing device |
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Application publication date: 20121024 |