Oxygen-enriched side-blown double-zone molten pool smelting furnace and method for smelting matte copper-containing complex materials

Abstract

The invention discloses an oxygen-enriched side-blowing dual-area bath smelting furnace and a method for smelting copper matte by using copper-containing complex materials. The bath smelting furnace comprises a furnace body and a bath. The furnace body consists of a furnace lining, water jacket, a charging port, a smoke hood and a furnace body air vent. The bath consists of a slag mouth, a discharging port, a bath air vent, an auxiliary smoke pipe and an auxiliary charging port. The bath is arranged on the side surface of the furnace body. The upper mouth of the bath is communicated with the bottom surface of the furnace body through a melt flow guide port. The method comprises the steps of material mixing, oxygen-enriched side-blowing dual-area bath smelting, smoke dust reuse and slag water quenching. The oxygen-enriched side-blowing dual-area bath smelting furnace disclosed by the invention is a zoned structure, oxygen-enriched air is blown inside respectively from a furnace body pass port and the bath air vent, and a smelting process and a slag clarification process are enhanced. The oxygen-enriched side-blowing dual-area bath smelting furnace and the method for smelting copper matte by using copper-containing complex materials have the advantages that the combustion is full, the recovery rate is high, the operation is easy to perform, unorganized emission is less, the resources are comprehensively utilized, the energy is saved, the consumption is reduced, the coke consumption can be decreased by 10 percent, the hearth specific productivity is improved by 15 percent, the electricity and water consumption is decreased by 12 percent and the product quality is improved.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal smelting, and specifically relates to an oxygen-enriched side-blown double-zone molten pool melting furnace based on an oxygen-enriched side-blown double-zone molten pool melting furnace process with simple process and stable and reliable operation, and its copper-containing complex material smelting furnace. The matte method. Background technique [0002] In the pyro-smelting process of non-ferrous metal copper, it is generally necessary to add copper concentrate, solvent and coke into the smelting furnace in a certain proportion and order, and carry out semi-self-heating or self-heating under high temperature and strong oxidizing atmosphere. Smelting, melting the copper sulfide concentrate to form a eutectic of metal sulfide - matte. Copper sulfide is enriched in copper matte in a stable low-valent sulfide state. The properties of matte and slag are very different, and they can be cl...

AI Technical Summary

Problems solved by technology

However, because the tuyere is generally located at the lower part of the furnace body, the blown oxygen strongly stirs the smelting area, and there is no reasonable space for settlement and separation. The matte copper and slag produced by it are subjected to stirring impact and cannot be separated quickly and completely, and the copper content in the slag is relatively high.

At present, the newly developed melting pool melting furnace type in China also realizes the complete separation of matte and slag by adding a partition wall in the furnace to distinguish the smelting zone and the settlement zone, but it requires a large hearth area, and the partition wall is long-term It is washed by the melt in a high temperature environment, and it is difficult to maintain and maintain

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