Process for producing anode copper by adoption of four connected furnaces

Abstract

The invention provides a process for producing anode copper by adoption of four connected furnaces. The process is particularly characterized in that a smelting furnace, a slagging furnace, a copper preparation furnace and an anode furnace are connected in series from front to back and are connected through chutes. The process mainly comprises the steps that copper concentrate and flux enter the smelting furnace to react with oxygen-enriched air to generate smelting slag and copper matte, and the smelting slag continuously overflows and is put into a slow cooling slag bag through the corresponding chute; the copper matte is siphoned to continuously flow into the slagging furnace through the corresponding chute and reacts with flux and oxygen-enriched air to generate converting slag, white matte and high-temperature smoke; the converting slag continuously overflows and is put into the slow cooling slag bag through the corresponding chute; the white matte is siphoned to continuously flow into the copper preparation furnace through the corresponding chute and reacts with flux and oxygen-enriched air to generate converting slag, crude copper and high-temperature smoke; copper preparation slag is discharged regularly and is quenched and broken to return to the slagging furnace; crude copper is siphoned and continuously or discontinuously flows into the anode furnace through the corresponding chute, the anode furnace operates alternately, and anode copper is obtained through oxidation and reduction. The process achieves continuous operation of the crude copper production process.

Description

technical field [0001] The invention relates to a process for producing anode copper, in particular to a process for producing anode copper by adopting four continuous furnaces, which is called Jinfeng copper smelting process. 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 ...

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 flow the hot matte directly 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, blister copper and high-temperature flue gas through oxidation reaction ;Although the energy consumption is low, there are disadvantages of high copper content in blowing slag, low direct yield, high sulfur content and high 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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