Impure copper refining method for electric copper anode plate

Abstract

The invention discloses an impure copper refining method for an electric copper anode plate. The impure copper refining method comprises the following steps: A, impure copper with the mass ratio of 87-98.5 percent is divided into six grades from high to low according to a difference of 1.5-2 percent of each grade, wherein grade 1 to grade 4 are high grades, and grade 5 to grade 6 are low grades; B, the high-grade impure copper with the mass ratio being 65 portions an the low-grade impure copper with the mass ratio being 6.5 portions are put into a refining furnace, and compressed air or oxygen-enriched air are blown into the refining furnace; and C, after oxidation is completed, the low-grade impure copper with the mass ratio being 2-3 portions is put into the refining furnace. The method adopts an impure copper grading method to carry out ordination and collocation for the impure copper of each furnace, the copper content of the impure copper of each furnace is relatively uniform, and the quality of the anode plate is more easily controlled. Meanwhile, as the copper content of the impure copper of each furnace is uniform, the operation and the time are more accurate, the cost is saved, the efficiency is also increased, and the refining time of the impure copper is shortened.

Description

technical field [0001] The technical field of the electrolytic copper of the present invention, in particular relates to a method for refining the mixed copper of the electrolytic copper anode plate. Background technique [0002] The electrolytic copper anode plate is made of miscellaneous copper through refining. The copper content of miscellaneous copper is between 87-98.5% (in terms of mass percentage content), and the copper content of the anode plate is 90-99.3%. [0003] The current method of refining miscellaneous copper into cathode plates is as follows: heating and melting miscellaneous copper, blowing compressed air or oxygen-enriched air, and removing S, Fe, Zn, Pb, Ni, Sn, Bi, etc. contained in miscellaneous copper Easily oxidizable impurities form slag on the surface of copper in the form of oxides, and other small amounts of impurities are stored in copper water. The oxygen blown into the air first oxidizes copper to form cuprous oxide, and then oxidizes impuri...

AI Technical Summary

Problems solved by technology

[0004] The existing technology has the following disadvantages: the copper content of miscellaneous copper is uneven, and it is not classified according to its copper content, and the miscellaneous copper in a furnace is not matched according to the copper content, so the miscellaneous copper in a furnace The copper content may be higher or lower, and the quality of the anode plates produced will vary, which increases the difficulty of controlling the quality of the anode plates

If the copper content of miscellaneous copper in a furnace is low, it may not meet the copper content standard of the cathode plate; if the copper content of miscellaneous copper in a furnace is high, but the refining process is still operated according to the original refining time, Not only wasting time, but also increasing costs