Copper slag processing system and method

Abstract

A copper slag processing method comprises the steps that S11, copper slag and carbonaceous reducing agents accounting for 3-20% of the mass of the copper slag are put into a comprehensive recycling furnace to be smelted, the operation temperature of the comprehensive recycling furnace is 1350-1550 DEG C, operation power intensity is 100-250 kW / m<2>; and S12, copper matte of the alloy phase discharged from the bottom of the comprehensive recycling furnace is subjected to ore grinding to the beneficiation standard after water crushing or wind crushing, and the copper matte with the copper content of 30-75 wt%, iron powder with the iron content of more than 80 wt% and tailings are produced after magnetic separation and / or flotation. The invention further provides a copper slag processing system. The smelting slag is processed through a copper slag resourceful treatment technology, smoke rich in lead and zinc is processed in a matched mode, and the effect that copper, lead, zinc, stibium and arsenic in the slag are decreased to be 0.3%, 0.1%, 0.15%, 0.01% and 0.005% or below separately.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a copper slag processing system and method. Background technique [0002] The output rate of slag in the copper smelting process is generally 60% to 80%, and the copper content in slag is generally 1% to 4%. At present, there are two main processes for the recovery of copper in slag, one is traditional electric furnace dilution, and the other is slag beneficiation. . [0003] Due to the limitations of the technology and equipment conditions of the traditional electric furnace depletion process, the copper content of the treated slag is generally 0.6% to 0.8%, and the recovery rate of copper is low. [0004] Although the slag beneficiation process can reduce the copper content of the tailings to about 0.3%, the process has the disadvantages of long process, large floor area, and large investment. In addition, the slag beneficiation tailings have secondary pollution...

AI Technical Summary

Problems solved by technology

[0006] Both traditional dilution electric furnace and slag beneficiation methods cannot recover zinc and lead in slag, and cannot deeply remove arsenic in slag

And the lead-containing fume produced by smelting returns to the copper smelting system, which brings troubles to the subsequent copper refining operation

Images