A process for preparing low-oxygen copper rods by using scrap copper

A low-oxygen copper and waste copper technology is applied in the field of preparing low-oxygen copper rods, which can solve the problems of poor conductivity, easy breakage, low tensile strength, etc. Effect

Active Publication Date: 2018-11-23
安徽金林科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of low-oxygen copper rods in the prior art, such as poor conductivity, low tensile strength, and easy breakage, and to provide a process for preparing low-oxygen copper rods using scrap copper, which helps to reduce copper The oxygen content in the rod improves the tensile resistance and conductivity of the low-oxygen copper rod, and the invention uses secondary copper resources as processing raw materials, which can effectively reduce production costs

Method used

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  • A process for preparing low-oxygen copper rods by using scrap copper
  • A process for preparing low-oxygen copper rods by using scrap copper
  • A process for preparing low-oxygen copper rods by using scrap copper

Examples

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Embodiment 1

[0052] Such as figure 1 As shown, a kind of process of utilizing waste miscellaneous copper to prepare low-oxygen copper rod of the present embodiment comprises the following steps:

[0053] Step 1, the melting of raw materials comprises the following operations:

[0054] 1. Feeding: Use 90% waste motor wires and 10% bright copper to mix and pack into 60-100kg square raw materials. Use an automatic feeding machine to add the raw materials into the copper melting furnace, and cover the surface of the raw materials with a layer of broken glass. The mass ratio of glass to raw material is 1:65.

[0055] The waste motor wires in this embodiment come from various types of waste motors, and before the waste motor wires are put into the furnace, they are firstly treated to remove the paint film to remove surface impurities. Mixing waste motor wires with bright copper as raw materials, on the one hand, the waste motor wires are used for secondary use of waste copper resources, which ...

Embodiment 2

[0088] A process for preparing low-oxygen copper rods using scrap copper, which is basically the same as in Example 1, except that in step 1 of this example, 95% of waste motor wires and 5% of bright copper are used as raw materials for mixing and packaging, and glass The mass ratio to the raw material is 1:75, and the natural gas flow rate is 780m 3 / h, the temperature of molten copper in the copper melting furnace reaches 1200°C; the casting temperature of the copper liquid in step 2 is controlled at 1110°C, and the temperature of the crystallization wheel 2 is controlled at 120°C.

[0089] In the present embodiment, the inner cooling pipe 3 includes a front cooling section, a middle cooling section and a rear cooling section, and the inlet water pressure of the front cooling section, the middle cooling section and the rear cooling section is 8kg / cm 2 ; The outer cooling pipe 4 includes a front cooling section and a rear cooling section, and the inlet water pressure of the f...

Embodiment 3

[0093] A process for preparing low-oxygen copper rods using scrap copper is basically the same as in Example 1, except that 93% of waste motor wires and 7% of bright copper are used as raw materials for mixing and packaging in step 1 of this example, and glass The mass ratio to the raw material is 1:70, and the natural gas flow rate is 800m 3 / h, the temperature of molten copper in the copper melting furnace reaches 1300°C; the casting temperature of the copper liquid in step 2 is controlled at 1120°C, and the temperature of the crystallization wheel 2 is controlled at 110°C.

[0094] In this embodiment, the inner cooling pipe 3 includes a front cooling section, a middle cooling section and a rear cooling section, and the inlet water pressure of the front cooling section, the middle cooling section and the rear cooling section is 7.5kg / cm 2 ; The outer cooling pipe 4 includes a front cooling section and a rear cooling section, and the inlet water pressure of the front cooling ...

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Abstract

The invention discloses a process for processing a low-oxygen copper rod through scrap copper and belongs to the field of colored metallurgy. The process comprises the following steps that firstly, the raw material is fused, wherein waste motor wires and bright copper are mixed into the raw material, the surface of the raw material is covered with cullet, natural gas is introduced to serve as a hot source for fusing the raw material, oxidization and reduction treatment are carried out, and finally, impurities on the surface of copper liquid are removed; secondly, copper liquid casting is carried out, wherein the copper liquid enters a crystallization wheel through casting ladle and is subjected to cooling crystallization to form copper billet; thirdly, the copper billet is rolled, wherein the copper billet is fed into a continuous mill to be rolled into the low-oxygen copper rod; and fourthly, discharging is carried out, wherein the rolled low-oxygen copper rod is wound into a spiral shape through a rod winding machine and then packed and discharged. The low-oxygen copper rod produced through the process is low in specific resistance, excellent in conductivity, high in extension strength, good in ductility and low in production cost, end breaking phenomena are not likely to occur during follow-up wire drawing treatment, and production benefits are improved for an enterprise.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metallurgy, and more specifically relates to a process for preparing low-oxygen copper rods by using waste miscellaneous copper. Background technique [0002] Copper is an important non-ferrous metal, which is widely used in various industrial sectors because of its excellent comprehensive properties, such as electrical conductivity, thermal conductivity, corrosion resistance and good processability. The existence of a very small amount of impurities such as oxygen, lead, antimony, tin, etc. will seriously affect the conductivity and other properties of copper, so different fields have strict requirements on the purity of copper. Low-oxygen copper rods are favored by the market and widely used because of their high purity, low oxygen content and less impurities. [0003] The production of existing low-oxygen copper rods mainly adopts the continuous casting and rolling process. After the raw c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/06C22B15/00B21B1/16
CPCB21B1/16B21B2261/08B21B2261/20B21B2265/12B22D11/062B22D11/0682C22B15/0028Y02P10/20
Inventor 金权扬
Owner 安徽金林科技股份有限公司
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