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Method for producing oxygen-free copper by utilizing waste red copper

A technology of oxygen-free copper and red copper, which is applied in the direction of improving process efficiency, etc., can solve problems such as environmental pollution, large copper loss, and complicated procedures, and achieve the effects of no environmental pollution, reduced production costs, and simple processes

Inactive Publication Date: 2014-02-19
JIANGSU HUANSHENG COPPER IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This indirect utilization process is complicated, the cycle is long, the copper loss is large, the energy consumption is high, and it causes environmental pollution.

Method used

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  • Method for producing oxygen-free copper by utilizing waste red copper

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Embodiment Construction

[0010] The difference between waste red copper and standard cathode copper is that waste red copper may be mixed with other metal impurities, such as aluminum, iron, zinc, tin, etc.; there are more impurities attached to the surface, such as insulating paint, oil, dust, moisture, etc.; Due to the difference in the original smelting process, especially the deoxidation process of waste copper, there is a large difference in composition, and the content of impurity elements such as phosphorus, iron, arsenic, and bismuth may be relatively high. The key to directly using waste copper to produce oxygen-free copper is to combine these Removal of impurities. According to this, the present invention adopts raw material pretreatment and melt compound purification process to remove the above two types of impurities respectively. Raw material pretreatment mainly includes sorting, roasting, washing, and drying; the purpose of sorting is to remove metal impurities such as aluminum, iron, z...

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Abstract

The invention relates to the field of production of oxygen-free copper, and provides a method for producing oxygen-free copper by utilizing waste red copper. The method comprises the steps as follows: 1) sorting; 2) roasting, water washing and drying; 3) adoption of a composite melt purification process combining oxidizing smelting, degassing and filtering for slag removal and deoxidation; 4) casting. The method is simple in process and convenient to operate, has no environment pollution, improves the working efficiency and reduces the production cost.

Description

technical field [0001] The invention relates to the field of oxygen-free copper production, in particular to a method for producing oxygen-free copper by using waste copper. Background technique [0002] Oxygen-free copper has high electrical conductivity, ductility and air tightness, low hydrogen embrittlement tendency, and is favored in the field of electronic power, such as making wires and cables, motor commutators, high vacuum electronic devices, etc. At present, the raw materials for the production of oxygen-free copper basically use high-quality first-class electrolytic cathode copper, and the cost is extremely high. If some high-grade waste copper is added to the furnace charge, such as scraps from conductive copper factories, waste copper wires, and upper lead waste, etc., it can be used. Make full use of resources, save materials and reduce consumption. Usually, waste red copper is also indirectly used to produce oxygen-free copper, that is, it is first smelted in...

Claims

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Application Information

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IPC IPC(8): C22B15/00
CPCY02P10/20
Inventor 仇文秋
Owner JIANGSU HUANSHENG COPPER IND