Mining cable high-strength oxygen free copper rod

Abstract

The invention discloses a mining cable high-strength oxygen free copper rod. In the burdening process, electrolytic copper raw materials are strictly screened, according to selection of copper, exceptfor the electrolytic copper, a certain amount of red copper waste is added, through refining impurity removal and deoxygenization, the standard of the cathode copper oxygen containing amount can be basically achieved, the problem about using of red copper waste renewable resources can be solved, and production cost is reduced; in the smelting process, through three-time refining, different refining reagents are selected, through layer-by-layer progressive operation, impurity metal like zinc, lead, tin, nickel, arsenic and the like can be removed to the maximum degree, through a composite deoxidant, lanthanum, cerium and praseodymium compound rare earth elements can be used for obviously improving the process property of the copper, and can make sufficient reaction with cuprous oxide in melt copper, the cuprous oxide is sufficiently reduced into copper, the compound deoxidant formed by calcium hexaboride and lithium oxide can further reduce the content of oxygen in the melt copper, andthe product oxygen containing amount can be further reduced.

Description

technical field [0001] The invention relates to the technical field of industrial production, in particular to a high-strength oxygen-free copper rod for mine cables. Background technique [0002] Oxygen-free copper (generally copper products with an oxygen content below 20PPM), because of its good electrical and thermal conductivity, is widely used in the production and manufacture of electronics, electrical engineering, and electrical devices. The high frequency of electric vacuum devices Products such as launch tubes, transition tubes, magnetrons, and vacuum switch tubes all use oxygen-free copper materials. Since electric vacuum devices are sealed in hydrogen during the manufacturing process, it is very important to control the oxygen content in copper. Strict regulations, with the continuous improvement of industrial technology, the international and domestic requirements for oxygen-free copper rods continue to increase, especially for the oxygen content of oxygen-free ...

AI Technical Summary

Problems solved by technology

[0002] Oxygen-free copper (generally copper products with an oxygen content below 20PPM), because of its good electrical and thermal conductivity, is widely used in the production and manufacture of electronics, electrical engineering, and electrical devices. The high frequency of electric vacuum devices Products such as launch tubes, transition tubes, magnetrons, and vacuum switch tubes all use oxygen-free copper materials. Since electric vacuum devices are sealed in hydrogen during the manufacturing process, it is very important to control the oxygen content in copper. Strict regulations, with the continuous improvement of industrial technology, the international and domestic requirements for oxygen-free copper rods continue to increase, especially for the oxygen content of oxygen-free copper rods. The existing continuous casting and rolling production The performance indicators of copper rods are far from meeting the international requirements. The oxygen content produced by the production process is about 200PPM, and the conductivity is below 0.0600. However, the oxygen content of international high-purity copper rods is required to be controlled within 20PPM. , the conductivity is above 0.064. As far as the above situation is concerned, there is still a gap between the preparation process of domestic oxygen-free copper rods and the international standard. The urgent problem is to solve the problem of phosphorus-free deoxidation of electrolytic copper in the process of melting and casting

[0003] The oxygen content of copper rods produced by the existing up-drawing method is generally between 50-100PPM, but the conditions of its preparation process are harsh, there are high requirements for raw materials, and the effect of oxygen removal and oxygen isolation is not good. The process of wood restoration consumes a lot of pine wood and causes a series of defects such as pollution to the environment