Method for producing white matte by mixed smelting of copper refining slag-pyrite-bornite tailings

Abstract

The invention discloses a method for producing white matte by mixed smelting of copper refining slags-pyrite-bornite tailings. The method comprises the following steps of: preparing materials according to the mass ratio of the copper contents of the copper refining slags, the pyrite and the bornite tailings being 1:(0.006 to 0.01):(0.02 to 0.09), adding the copper refining slags, the pyrite and the bornite tailings to a smelting furnace, adding anthracite which accounts for 5% to 19% total mass of the copper refining slags, the pyrite and the bornite tailings to the smelting furnace, and smelting in oxygen-enriched air to generate the white matte. The method for producing the white matte by the mixed smelting of the copper refining slags-pyrite-bornite tailings is small-scale in investment, low in energy consumption, continuous in operation and capable of recycling copper resources.

Description

technical field [0001] The invention belongs to the technical field of heavy non-ferrous metallurgy, and relates to a method of using low-grade copper ore to smelt white matte, in particular to a method of using copper refining slag-pyrite-bornite tailings for mixed melting to produce white matte method. Background technique [0002] The metal copper smelting technology has a history of thousands of years. Today, copper has become the third largest metal necessity in today's industry after steel and aluminum. In the modern copper smelting process technology, affected by factors such as economic indicators, technical indicators, and environmental indicators, copper smelting enterprises must consider maximizing output with the least production cost on the one hand, and strive to protect the environment on the other hand. Zero pollution. Therefore, it puts forward new requirements for the copper smelting process. [0003] In the copper smelting process, the production of whi...

AI Technical Summary

Problems solved by technology

However, there are certain defects in the above method: the amount of slag returned to the white matte is relatively high, the smoke and dust rate of some production processes is relatively high, and the equipment is relatively complicated

There are a few foreign companies trying to process low-grade copper ore, such as Kaiser Smelter in Germany, Comac Plant in the United States, South Aston Plant, etc., but due to large investment, high energy consumption, intermittent operation, Due to the disadvantages of frequent operation, short life of smelting furnace and high copper content in slag, these treatment technologies have not been widely promoted so far.

Images