Vacuum reduction furnace for electromagnetic induction heating melting reduction of magnesium metal

Abstract

The invention relates to the technical field of vacuum metallurgy equipment, in particular to a vacuum reduction furnace for electromagnetic induction heating melting reduction of magnesium metal. The vacuum reduction furnace comprises a furnace body (1), a hopper (4) made of a hard insulating material is arranged in the furnace body (1), and a center channel penetrating the bottom face of the hopper (4) is arranged in the center position of the hopper (4); one or more annular grooves (7) are concentrically arranged in the bottom face of the hopper (4), and iron in the solid state or the molten state is arranged in the grooves (7); a rectangular iron core (6) is arranged in the furnace body (1), one side of the rectangular iron core (6) penetrates the center channel of the hopper (4), and the other side of the rectangular iron core (6) is wound with a primary side coil (9); and the leading-out end of a copper winding of the primary side coil (9) is led out of the furnace through an insulation sealing device on the furnace body (1) so as to be connected with a power device. The vacuum reduction furnace is reasonable in design, distribution of a temperature field of the reduction furnace can be adjusted, and the heat transferring efficiency is high; and the vacuum reduction furnace is used for thermal reduction production of high-vapor-pressure metal such as magnesium, lithium, strontium and calcium and the like.

Description

technical field [0001] The invention relates to the technical field of vacuum metallurgical equipment, in particular to a vacuum reduction furnace for melting and reducing metal magnesium by electromagnetic induction heating, which can be used for preparing magnesium, lithium, strontium, calcium and other high vapor pressure metals by thermal reduction. Background technique [0002] Metals with high vapor pressure such as magnesium, lithium, strontium, and calcium can be prepared under vacuum conditions by thermal reduction. At present, in the field of metal magnesium production, the widely used reduction equipment is to directly heat the reduction tank made of heat-resistant alloy with gas or the like. This method is limited by the structure and material properties of the reduction tank, the reaction temperature is low, the heat transfer is slow, the energy consumption is high, and a large amount of expensive nickel-chromium alloy is consumed due to the oxidation of the red...

AI Technical Summary

Problems solved by technology

[0004] The problem existing in the prior art is: the first slag needs to be placed in the furnace

Additional facilities and operations are required when the furnace is started from a cold state, the start-up process is complicated, and the application is inconvenient

The loss of graphite electrodes and graphite linings at high temperatures is large, and equipment maintenance costs are high

Images