Forebed-free blast furnace and antimony-gold concentrate treatment method using forebed-free blast furnace

Abstract

The invention belongs to the technical field of metal smelting, and aims to solve the problems that when an existing blast furnace smelts antimony-gold concentrate, antimony in flue gas cannot be effectively treated, sulfur-containing gas cannot be effectively purified, heat in the blast furnace can be absorbed by direct input of air in the smelting process, and constant temperature in the blast furnace is not facilitated. According to the forebed-free blast furnace and the antimony-gold concentrate treatment method using the forebed-free blast furnace, the blast furnace comprises a blast furnace body, a dry type gooseneck communicates with a fire cabinet and the blast furnace body, a coiled pipe is installed on the fire cabinet, the coiled pipe is connected with a cooling box, a heat conduction sleeve is installed on the outer surface of the coiled pipe, and the heat conduction sleeve communicates with an air input pipe and an air conveying pipe. The air conveying pipe communicates with an annular air pipe and the cooling box communicates with a collecting box. According to the method, the yield and the quality of the refined antimony are greatly improved, the smelting efficiency and the smelting effect are obviously improved, the productivity is effectively improved, the energy consumption and the production cost are reduced, and the economic and technical indexes are improved.

Description

technical field [0001] The invention relates to the technical field of metal smelting, in particular to a forebed-less blast furnace and a treatment method for antimony-gold concentrate using the forebed-less blast furnace. Background technique [0002] The blast furnace is a shaft furnace in metallurgical equipment. The blast furnace is a shaft furnace in which the charge containing metal components is smelted under the condition of blowing air or oxygen-enriched air to obtain matte or crude metal. Composed of a hearth, the top of the furnace is equipped with a feeding port and a smoke exhaust port, and there are several tuyeres on both sides of the lower part of the furnace body, which are blown into the furnace. The hearth is equipped with a melt discharge port and a vent port. It is one of the important smelting equipment for pyrometallurgy because of its high productivity, high metal recovery rate, low cost, and small footprint; [0003] Blast furnaces are required in ...

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Problems solved by technology

[0005] The object of the present invention is to provide a blast furnace without a forebed and an antimony-gold concentrate treatment method using the blast furnace without a forebed. The heat in the flue gas is absorbed through the heat conduction sleeve so that the temperature of the input air is raised and enters the blast furnace. The air in the body will not absorb a large amount of heat, which helps to keep the temperature in the blast furnace body constant, which not only improves the overall smelting effect, but also effectively utilizes the heat in the flue gas, saving energy and reducing energy waste. The antimony-containing flue gas is fully oxidized through the dry gooseneck and the fire cabinet, which plays the role of secondary oxidation, which is helpful for the subsequent treatment and acquisition of antimony in it, and the antimony in the flue gas is effectively collected through the collection box. The sulfur in the flue gas is effectively treated by the desulfurization purification box, which significantly improves the overall use effect of the device, and solves the problem that the antimony in the flue gas cannot be effectively treated when the existing blast furnace smelts the antimony-gold concentrate. Effective purification of sulfur-containing gases, and the direct input of air during the smelting process will absorb the heat in the blast furnace, which is not conducive to the problem of constant temperature in the blast furnace

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