Method for removing impurities in waste copper

Abstract

The invention discloses a method for removing impurities in waste copper, in particular to a method for removing impurities in waste copper, such as Pb, Bi, Zn, Fe, and the like. The invention can simplify a melting process of recycling the waste copper and lower the requirements of equipment, such as a refining furnace, and the like. The method comprises the following steps: adding 0.02-0.05 percent of Ce or 0.03-0.06 percent of Zr, 0.03-0.06 percent of Ti or 0.03-0.06 percent of Li and 0.01-0.05 percent of Fe to the waste copper to achieve the favorable effect of removing the Pb, the Bi andthe Zn and achieve the requirements that a ratio of T2 copper to the Pb is smaller than or equal to 0.002 percent, a ratio of the T2 copper to the Bi is smaller than or equal to 0.0006 percent and a ratio of the T2 copper to the Zn is smaller than or equal to 0.002 percent; and oxidizing copper fused mass for 2-6 hours and adding 0.005-0.05 percent of quartz preparation to achieve the requirementthat a ratio of the T2 copper to the Fe is smaller than or equal to 0.0025 percent. The method for removing impurities in waste copper has the advantages of simple operation, high efficiency and low cost and suitability of industrialized production.

Description

technical field [0001] The invention relates to a method for removing impurities in scrap copper smelting, in particular to a method for removing impurities of Pb, Bi, Zn and Fe in scrap copper. Background technique [0002] Metal copper is widely used in industries such as electric power, machinery, electronics, electrical appliances, and weapons. However, my country has always been a country with a shortage of copper resources. Copper mine resources are poor, mining is difficult, newly discovered resources are few, and reserve reserves are insufficient. In addition, the development process will inevitably seriously pollute the environment and destroy the local ecosystem. Therefore, regardless of Whether it is from the perspective of protecting my country's limited non-ferrous metal mineral resources, or from the perspective of protecting the ecological environment of resource areas and realizing sustainable regional development, is of special significance to China, a copper...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of poor removal of Pb, Bi, Zn, Fe and other impurity elements in the current scrap copper smelting process, the purpose of the invention is to provide a smelting process that is simple, easy to operate, low in cost, good in removing impurities, and suitable for industrialization. A method for removing impurities from scrap copper produced