Three continuous furnace technology for continuous production of anode copper with copper concentrate

Abstract

The invention provides a three continuous furnace technology for continuous production of anode copper with copper concentrate. The technology is particularly characterized in that a smelting furnace, a copper making furnace and an anode furnace are in tandem arrangement successively, and kilns are connected by chutes. The technology comprises the steps that the copper concentrate and flux enter the smelting furnace and react with oxygen-enriched air to generate white matte, smelting slag and high-temperature smoke; the smelting slag overflows continuously; a slow cooling slag ladle is put through the chutes for floatation and depletion; the white matte continuously flows into the copper making furnace via siphon through the chute and reacts with the flux and the oxygen-enriched air to generate raw copper, copper converting slag and high-temperature smoke; the raw copper continuously or intermittently flows into the anode furnace via siphon through the chute; the anode furnace alternately operates and produces the anode copper via oxygenation and reduction; and the converting slag is regularly discharged, chilled, broken and returned to the smelting furnace. The technology achieves continuous operation of smelting production of the raw copper with the copper concentrate.

Description

technical field [0001] The invention relates to a process for producing anode copper, in particular to a three-continuous furnace process for continuously producing anode copper from copper concentrate. Background technique [0002] Copper smelting technology is gradually developing in the direction of high efficiency, cleanliness and continuity. Copper smelting enterprises at home and abroad are actively seeking or developing copper smelting processes with large production capacity, low investment and operating costs, continuous operation, and environmental protection. my country attaches great importance to the selection and development of smelting process and blowing process in large and medium-sized copper smelting new or renovation projects. While introducing and digesting advanced technologies, it focuses on developing smelting technology and continuous blowing technology with independent intellectual property rights. It has become an inevitable trend to gradually narro...

AI Technical Summary

Problems solved by technology

This process has the disadvantages of inability to digest cold material, high comprehensive energy consumption, high copper content in blowing slag, low direct yield, high production cost, and high sulfur content in blister copper.

The Mitsubishi blowing process is to directly flow the hot matte (grade less than 68%) into the blowing furnace through the chute, and at the same time use the air spray gun to spray flux and oxygen-enriched air into the melt, and generate blowing slag through oxidation reaction. Blister copper and high-temperature flue gas; although energy consumption is low, there are disadvantages of high copper content in blowing slag, low direct yield, high sulfur and impurities in blister copper

[0005] Blister copper is transported to the anode furnace by the ladle and bridge crane, and is oxidized and reduced to produce anode copper. Most enterprises use natural gas or solid fuel, solid reducing agent, and the working environment is poor.

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