Metallurgical furnace slag thickness control device

Abstract

The invention relates to the technical field of metallurgy, in particular to a metallurgical furnace slag thickness control device, which comprises a furnace wall and a slag hole external water jacket, wherein the furnace wall is provided with a fireproof slag outlet wall body; a water-cooling component is embedded between the furnace wall and the fireproof slag outlet wall body; the fireproof slag outlet wall body is provided with an upper slag hole and a lower slag hole; the slag hole external water jacket is positioned in the water-cooling component and is further positioned on the external surface of the fireproof slag outlet wall body; the slag hole external water jacket comprises a first slag hole, a second slag hole and a third slag hole; the first slag hole and the second slag hole are synchronously communicated with the upper slag hole; and the third slag hole is communicated with the lower slag hole. By using the metallurgical furnace slag thickness control device provided by the invention, the in-time and reasonable control of the thickness of a furnace slag layer can be achieved according to an on-site furnace practice; the residence time of furnace slag in a metallurgical furnace is regulated; the loss of a metal in furnace slag due to the completion extent of a chemical reaction and mechanical inclusion is decreased; the recovery rate of the metal is improved; the processing cost is saved; the service life of the slag holes can be effectively prolonged; and further, the maintenance is convenient.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a device for controlling the thickness of metallurgical slag. Background technique [0002] In the metallurgical process, the main function of the slag is to concentrate the gangue in the ore and the flux and the ash in the fuel, and to separate the smelted product metal and cobalt at high temperature. In some smelting processes, the main reaction for extracting metals is carried out in the slag medium. For example, during lead reduction smelting, the lead silicate dissolved in the slag can be directly reduced by reducing agents (CO, C) from the slag, and the loss of metal in the slag is mainly determined by the degree of completion of these reactions. Therefore, a reasonable slag thickness is conducive to the sedimentation and separation of metal droplets or calcite droplets in the slag, and the completeness of the sedimentation separation plays a decisive role in the mechan...

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Problems solved by technology

However, in the prior art, the thickness of the slag layer in the furnace is usually set at a fixed value, and its thickness cannot be adjusted at any time, so that the residence time of the slag in the metallurgical furnace cannot be well controlled, making the metal The degree of reaction in the slag is not guaranteed

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