Hypoxia copper rod production technology

Abstract

The invention discloses a technique for manufacturing a low-oxygen copper rod, which is characterized by comprising the following steps: firstly, pretreating waste copper; secondly, throwing the wastecopper into a reverberatory furnace; thirdly, removing slag at a low temperature; fourthly, stopping blast and fire and oxidating at a high temperature; fifthly, melting slag; sixthly, stopping blast and fire and polling at a high temperature; and seventhly, continuously casting and rolling reduced copper and preparing the low-oxygen copper rod finished product. The technique for manufacturing the low-oxygen copper rod has the advantages of high efficiency, energy conservation and good product quality.

Description

Technical field: [0001] The invention relates to a production process for low-oxygen copper rods, in particular to a production process for producing low-oxygen copper rods through continuous casting and rolling processes by using a coal-to-gas furnace to generate coal gas for smelting waste copper. Background technique: [0002] The existing low-oxygen copper rod production process is mainly the continuous casting and rolling process, and its main process includes: scrap copper pretreatment, feeding, melting, slag removal, high-pressure air oxidation, comprehensive slag removal, live pine planting tree reduction, continuous Casting and rolling to produce low-oxygen copper rods. The key quality index of T2R low-oxygen copper rod is that the resistivity is not higher than 0.017241 ohm square millimeter per meter at 20°C, and the elongation is not less than 35%. The existing technology is to use a reverberatory furnace to smelt scrap copper. In the slag removal and redox stag...

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