Vacuum metal smelting heat accumulation reducing furnace system

Abstract

The invention discloses a vacuum regenerative and reduction furnace system for metal smelting, which comprises a reduction furnace (1), a reduction kettle (2), a regenerative burning system and a liquid-state metal collection system. The reduction kettle with a bevel bottom structure is provided with a radiation pipe (3) penetrating in the reduction kettle and is arranged at the middle section of the reduction furnace to divide the reduction furnace into an upper or a left combustion chamber (4) and a lower or a right combustion chamber (5), and the two combustion chambers are communicated with each other through the radiation pipe (3), so that the hot smoke in the combustion chambers can pass through the radiation pipe (3). The two combustion chambers are respectively connected with each other a regenerative combustion system, which is used for storing the heat of smoke discharged from the reduction furnace after heating materials through the radiation pipe and for controlling the alternate combustion of the combustion chambers and the flow direction of the high-temperature gas in the radiation pipe. A reduction material in the reduction kettle produces a metal vapor after reduction reaction, and the metal vapor is collected by the liquid-state metal collection system and is directly cast or conveyed to a refining furnace. The invention has the advantages of high heat utilization rate, good power saving effect, complete combustion and short reduction reaction time.

Description

technical field [0001] The invention relates to a reduction furnace, in particular to a heat storage reduction furnace system for vacuum metal 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 lon...

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 time required until the reduction reaction is basically completed is generally between 8 and 12 hours, and the production capacity is limited

Images