Method for carrying out mixed melting on multisource complex low-grade copper ores to produce white matte

Abstract

The invention discloses a method for carrying out mixed melting on multisource complex low-grade copper ores to produce white matte. The method comprises the following steps: carrying out batching according to a mass ratio of copper content of copper concentrates to copper content of scrap copper to copper content of refining slags of copper pyrites of 1:(0.30 to 0.45):(0.002 to 0.006); adding the copper concentrates, the scrap copper and the refining slags of the copper pyrites into a melting furnace; adding anthracite of which mass accounts for 5 percent to 19 percent of the total mass of the copper concentrates, the scrap copper and the refining slags of the copper pyrites into the melting furnace; melting in the oxygen-enriched air to produce the white matte. The method disclosed by the invention has a small investment scale, is low in energy consumption, continuously operates and can implement recycling of copper resources.

Description

technical field [0001] The invention belongs to the technical field of heavy nonferrous metallurgy, and relates to a method for smelting white matte by using low-grade copper ore, in particular to a method for producing white matte by mixing and melting multi-source complex low-grade copper ore. 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 white matte i...

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

[0006] There is still no effective way to deal with multi-source complex low-grade copper ore

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