Machining technology for low-oxygen bright copper bar

Abstract

The invention discloses a machining technology for a low-oxygen bright copper bar and belongs to the technical field of copper machining. The machining technology includes the following steps that firstly, scrap copper is subjected to sorting treatment, the treated scrap copper is thrown into a reflecting furnace to be subjected to be heated and melted, low-temperature slagging-off is conducted, then the temperature is increased to 1300 DEG C or above, and high-temperature oxidization is conducted; and after oxidization is over, poling work can be conducted, and finally the bright copper bar is formed through continuous casting and rolling. The machining technology has the beneficial effects of being high in efficiency, capable of saving energy, uniform in product performance, stable in quality and the like.

Description

technical field [0001] The invention belongs to the technical field of copper processing, and in particular relates to a processing technology for a low-oxygen bright copper rod. Background technique [0002] With the rapid development of the national economy, on the one hand, copper consumption has grown rapidly and copper prices have soared, while my country's copper resources are in short supply, and the output of copper concentrates is difficult to meet the demand; pollute. Therefore, the recycling of scrap copper is a shortcut for the rapid development of my country's copper industry to make up for the shortage of raw materials. For a long time, copper rod manufacturers in various countries have been trying to increase the proportion of scrap copper in raw materials. How to use scrap copper to produce bright copper rods by using the refining process of red miscellaneous copper reverberatory furnace is an important research goal for technicians. [0003] The existing b...

AI Technical Summary

Problems solved by technology

Nowadays, the use of reverberatory furnaces to smelt scrap copper is often accompanied by the following problems: ① poor control of temperature and improper use of process methods, resulting in high fuel consumption; ② poor control of temperature and improper use of process methods, it is easy to make other metals Melting into liquid copper will affect the quality of the copper rod. It is difficult to reach the national standard of resistivity lower than 0.017241 ohm square millimeter per meter, and burrs or cracks will appear after about 10 turns of rotation; At the same time, the high-temperature liquid copper is over-oxidized, resulting in high consumption of reducing agents such as live pine; ④The over-oxidized copper at the same time affects the resistivity, torsion and tensile properties of the product; The small particles formed by the liquid copper that jumps from time to time are easily sucked away by the high-speed gas flow, resulting in increased copper loss during the smelting process; A continuous oxidizing atmosphere is formed on the surface of the liquid copper, and at the same time the combustion will consume a lot of live pine that has not been inserted into the liquid copper, which is not conducive to the rapid and efficient reduction of tree cuttings