a reduction kettle

Abstract

The invention discloses a reduction kettle, which comprises a kettle body (1), the kettle body is a box body or a cylinder structure, the bottom or the top of the kettle body is arranged at an inclination, and the front and rear side walls of the reduction kettle in the kettle body are arranged in parallel or in a horizontal array The radiant tube (2) runs through the kettle body, a slag discharge outlet (3) is provided on the side kettle body at the lowest point of the bottom of the kettle body, and an auxiliary slag discharge outlet (3) is provided on the kettle body opposite to the slag discharge outlet at the highest point of the bottom of the kettle body ( 4), the highest point on the top of the kettle body is provided with a charging port (5), and the kettle body on the side of the highest point on the top of the kettle body is provided with a metal vapor vacuum exhaust port (6). The invention can reduce reduction reaction time, improve production capacity and reduce energy consumption. Extend the service life of the reduction kettle. The slag discharge is easier, which can improve the slag discharge efficiency and reduce the loss of heat energy. The collection of metal vapor is convenient. The product has high purity.

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.

Images