Device and process adopted for rod-making by continuous casting and continuous rolling of red impure copper

A red miscellaneous copper and continuous casting technology, which is applied in the direction of metal rolling, can solve the problems of high resistivity of copper rods, unqualified product quality, poor pullability, etc., and achieve the goal of improving surface quality, good surface quality and reducing impurities volume effect

Inactive Publication Date: 2012-10-24
湖南金龙国际铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although domestic continuous casting and rolling equipment is used to produce copper rods with red copper, although the production cost is low, the resistivity of copper rods is high (0.017400Ω·m), the plasticity is poor (elongation 38% to 42%), and the drawability is poor ( Pulled to Ф1.0mm or more, broken ends 2-3 per ton), resulting in difficulty in subsequent wire drawing, affecting wire drawing efficiency, coupled with high resistance, the wire and cable products produced with this copper rod will cause great damage to the downstream during use. waste of electric energy, and it is easy to cause unqualified product quality, burying hidden dangers of accidents

Method used

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  • Device and process adopted for rod-making by continuous casting and continuous rolling of red impure copper
  • Device and process adopted for rod-making by continuous casting and continuous rolling of red impure copper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Red miscellaneous copper is sorted by spectral measurement. The melting, oxidation and reduction furnace has a capacity of 80 tons. After batching, the copper content of this furnace is 99.89%, the lead content is 150mg / kg, the tin content is 560mg / kg, and the nickel content is 120mg. / kg, the rest of the impurity content is qualified. Add SiO 2 As a flux, the melting temperature is 1090°C, the melting time is 6.5 hours, and the slag is removed; the reverberatory furnace is used for oxidation and reduction treatment, the oxidation-reduction temperature is 1180°C, and oxygen at a pressure of 1.0MPa is introduced as an oxidant, and the oxidation time is 4 hours. Add pine wood As a reducing agent, the reduction time is 6 hours. Sampling analysis shows that the copper content is 99.91%, the lead content is 85mg / kg, the tin content is 420mg / kg, the nickel content is 108mg / kg, and the oxygen content is 0.049%. Electromagnetic refining device ( figure 1 ), the flo...

Embodiment 2

[0021] Example 2 Unlike Example 1, the copper content of red copper after batching is 99.90% ， The zinc content is 230mg / kg, and the remaining impurities are qualified. The copper material is melted in a reverberatory furnace with a melting temperature of 1130°C and a melting time of 6 hours; it is oxidized and reduced in a reverberatory furnace with a redox temperature of 1130°C and an oxidation time of 5 hours. Natural gas is used as a reducing agent and the reduction time is 5 hours. Sampling and analysis showed that the copper content was lower than 99.90%. After the second oxidation and reduction, the copper content was 99.92% after repeated oxidation and reduction. ， Zinc content 58mg / kg, oxygen content 0.025%. When the copper liquid flows through the electromagnetic refining device, the flow velocity is 0.17m / s, and the electromagnetic force received by each liter of copper liquid is 2000N. The angle of the copper liquid along the oblique upward direction is 26 degree...

Embodiment 3

[0022] Example 3 The difference from Example 1 is that the copper content of the mixed copper is 99.94%, the nickel content is 122.5 mg / kg, and the remaining impurities are qualified. It is melted in a shaft furnace with a melting temperature of 1100°C and a melting time of 6 hours. It is oxidized and reduced in a converter with a redox temperature of 1100°C. Sampling and analysis showed that the content of impurity elements in the copper liquid was qualified, the copper content was 99.94%, and the oxygen content was 0.022%. When the copper liquid flows through the electromagnetic refining device, the flow velocity is 0.20m / s, and the electromagnetic force received by each liter of copper liquid is 1900N. The angle of the copper liquid along the oblique upward direction is 21 degrees to the horizontal plane. The oxygen content of liquid copper passing through the electromagnetic refining unit dropped to 0.016%. The molten copper refined by the electromagnetic refining device ...

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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 [0001] The invention provides a device and process for continuous casting and rolling of purple copper rods. Background technique [0002] Energy saving and emission reduction is the long-term policy of national industrial development. The reuse of scrap copper reduces waste pollution and saves limited resources, which is a good thing that kills two birds with one stone. The red miscellaneous copper continuous casting and rolling rod process is an advanced technology for producing copper rods by using red miscellaneous copper. It uses red miscellaneous copper as raw material. After sorting, it is melted, oxidized, and reduced to obtain copper liquid, which is poured into continuous casting and rolling equipment. , to get a copper rod. Compared with the copper rods produced by the traditional hot rolling method, the copper rods produced by the copper rod continuous casting and rolling process have the characteristics of long length, energy saving, stable pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/46
Inventor 苏华光刘孟英
Owner 湖南金龙国际铜业有限公司
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