Preparation process of low-oxygen copper rods

Abstract

The invention provides a preparation process of low-oxygen copper rods, and belongs to the technical field of copper rod production. The preparation process of the low-oxygen copper rods comprises thesteps of feeding, melting, oxidation and decontamination, reduction, continuous casting and continuous rolling; in the reduction step, natural gas is used for reduction; the pressure of the natural gas is controlled within 0.35-0.45 MPa, and the flow is controlled within 90-120 m3 / h; the reduction time is 1-2 h; and when the natural gas is introduced, an exhaust fan is used for controlling the air pressure in a furnace within 0.01-0.03 MPa. The preparation process of the low-oxygen copper rods has the following beneficial effects: the method of cooperating the natural gas reduction with the furnace internal air pressure control is adopted to replace the log reduction, so that the production efficiency is greatly improved, the environment is protected, the process is simple and easy to control, meanwhile, the product quality is high, and the large-scale popularization and application are facilitated; and such recovered materials as waste copper are used as raw materials, so that the energy is saved.

Description

technical field

[0001] The invention relates to the technical field of copper rod production, in particular to a production process of a low-oxygen copper rod. Background technique

[0002] With the development of the electrical industry, the demand for materials such as cables and wires and the purity requirements are getting higher and higher. Low-oxygen / oxygen-free copper rods are widely used to guide electrical cables, especially low-oxygen copper rods with a diameter of 8mm. Its high purity, low oxygen content, and less impurities are favored by the market. The existing low-oxygen copper rods mainly adopt the continuous casting and rolling process. The steps include scrap copper pretreatment, feeding, melting, redox, slag removal, continuous casting and rolling. However, the current low-oxygen copper rods have high production process costs and environmental pollution. Large size, different product quality and performance, and many other shortcomings, cannot meet the pr...