A copper smelting device with high oxygen-enriched double-side blowing molten pool and its operation method

Abstract

The invention relates to a copper smelting device with a high-oxygen-enrichment double-side-blowing melting bat and an operation method of the copper smelting device and belongs to the technical field of copper smelting devices and processes. According to the method, a large-volume hearth is used, the continuous production is performed, a single furnace is adopted so as to meet the periodic production of a PS converter, smelting slag continuously overflows from a smelting slag outlet and matte is directly discharged from a matte outlet formed in the bottom end of the hearth. During the smelting slag is discharged, the flowing direction of the smelting slag is controlled by virtue of a switching chute so that the smelting slag can be continuously discharged; the ratio of Fe to SiO2 in the smelting slag is controlled at 1.6-1.8, the ratio of a fuel to input materials is controlled at 2-2.5% and the content of copper in the smelting slag is less than or equal to 0.65%. The method has the characteristics of small construction investment, low production cost, good working environment, high degree of automation, high utilization rate of plant building and the like.

Description

technical field [0001] The invention belongs to the technical field of copper smelting equipment and technology, in particular to a smelting device for extracting copper metal from copper ore to produce matte and an operating method thereof. Background technique [0002] In recent years, the oxygen-enriched side-blowing process has been widely used in the domestic copper smelting field due to its advantages of small investment and strong material adaptability, and more than a dozen copper smelting enterprises have adopted the oxygen-enriched side-blowing process. The equipment used in the oxygen-enriched side-blowing copper smelting process is mainly the oxygen-enriched side-blown furnace and its auxiliary facilities. The oxygen-enriched side-blown furnace is made of refractory materials and a furnace body with a copper water jacket. composition. The oxygen-enriched air is directly blown into the smelting slag layer, the material is put in from the top of the furnace, and t...

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Problems solved by technology

[0003] The problem existing in the oxygen-enriched side-blowing copper smelting process is that the matte blowing device it is equipped with is a PS converter, and the PS converter is a periodic production equipment, while the oxygen-enriched side-blowing copper smelting process is a continuous production, so it is necessary to add a A separate matte storage container, such as a heat preservation electric furnace, will inevitably increase the production cost and increase the floor area; the release of slag and matte from both ends of the furnace will cause a large amount of heat loss; A large amount of flue gas overflows, causing environmental pollution and poor operating environment for workers; due to the use of copper water jackets in the furnace body, heat loss increases, and fuel consumption is higher than that of bottom-blown furnaces

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