Modification process and device for hot molten copper slag

Abstract

The invention discloses a modification process for hot molten copper slag. The modification process comprises the steps of inputting oxygen into the slag at a discharging port of the liquid hot molten slag to perform oxidation treatment; and performing slow cooling on the hot molten slag after oxidation treatment. According to the modification process for the hot molten copper slag, the following reaction that 6(2FeO.SiO2) +2O2=4Fe3O4+6SiO2 is performed, so that silicon and iron are separated, and the iron extracting accuracy is further improved. The invention further discloses a modification device for the hot molten copper slag.

Description

technical field [0001] The invention relates to the technical field of copper smelting slag, in particular to a modification process of hot-melt copper slag. The present invention also relates to a hot-melt copper slag modification device for performing the above-mentioned hot-melt copper slag modification process. Background technique [0002] Copper smelting slag is the recovery of copper from the slag produced in the copper smelting process with a copper content of more than 0.5%, and it also contains Fe, Zn, Pb, Co and other metals. At present, the focus of copper smelting slag treatment in the world is on In terms of copper recovery, pyrolysis and beneficiation depletion processes are mainly used. In the beneficiation and depletion process, the vast majority of copper metal is recovered; for the tailings after copper beneficiation, a few enterprises use magnetic separation process to treat iron ore. However, since the iron minerals are mainly fayalite, which is a compo...

AI Technical Summary

Problems solved by technology

[0002] Copper smelting slag is the recovery of copper from the slag produced in the copper smelting process with a copper content of more than 0.5%, and it also contains Fe, Zn, Pb, Co and other metals. At present, the focus of copper smelting slag treatment in the world is on In terms of copper recovery, pyrolysis and beneficiation depletion processes are mainly used. In the beneficiation and depletion process, the vast majority of copper metal is recovered; for the tailings after copper beneficiation, a few enterprises use magnetic separation process to treat iron ore. However, since the iron minerals are mainly fayalite, which is a compound of ferrous oxide and silicon dioxide, magnetic separation cannot realize the separation of iron and silicon, resulting in unsatisfactory indicators of iron concentrate grade and recovery rate. Difficulty selling concentrates

Images