Reduction kettle

Abstract

The invention discloses a reduction kettle, comprising a kettle body (1) which appears as a box or cylinder structure. The bottom or top part of the kettle body is arranged in an inclined form. Radiation pipes (2) arranged to be parallel with both the front and back side walls of the reduction kettle or in a horizontal array form run through the kettle body. A slag draining port (3) is arranged on the side kettle body of the lowest point of the kettle bottom part, and an assistant slag draining port (4) is arranged on the kettle body, namely on a position where the highest point of the kettle bottom is opposite to the slag draining port. A charging inlet (5) is arranged on the highest point of the top part of the kettle body, and a metal steam vacuum adsorbing port (6) is arranged on the side kettle body of the highest point of the kettle body top. The invention can reduce reduction action time, enhance manufacturing capability, and also can reduce energy cost. The invention prolongs the service life of reduction kettle. The design of the invention leads slag draining to be easier and can enhance slag draining efficiency and reduce heat energy loss. The collection of the metal steam becomes convenient and the purity of the products is high.

Description

technical field [0001] The invention relates to a reduction kettle, in particular to a reduction kettle for metal vacuum smelting. Background technique [0002] In the production of metal vacuum smelting, the reduced material produced through the batching and pressing process is sent to the reduction tank for reduction reaction. Generally, the reduction reaction temperature is required to be higher than 1100 °C and the pressure is lower than 10Pa~13Pa. The reduction reaction is realized by heating the reduction tank in the reduction furnace with fuel or heating the radiant tube of the reduction tank so that the reduced material reaches the required temperature value. The existing reduction tank has a tubular hollow structure, which is placed in the reduction furnace to heat the reduced material. The heat is transferred from the outside of the reduction tank to the material. The thermal conductivity is low and the temperature rises slowly. It takes a long time to reach the re...

AI Technical Summary

Problems solved by technology

The existing reduction tank has a tubular hollow structure, which is placed in the reduction furnace to heat the reduced material. The heat is transferred from the outside of the reduction tank to the material. The thermal conductivity is low and the temperature rises slowly. It takes a long time to reach the reaction temperature. The existing The time required for the reduction tank from feeding to the completion of the reduction reaction is generally between 8 and 12 hours, and the production capacity is limited.

In the semi-continuous method, the reduction reactor is used to heat the reduced product. Although the reaction temperature is high, the energy cost remains high due to the use of electric heating; the reaction material forms a liquid state, and the product purity is low.

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