Single-spiral embedded excitation type magnesium vacuum reduction furnace adopting electromagnetic induction inner heating

Abstract

The invention relates to a single-spiral embedded excitation type magnesium vacuum reduction furnace adopting electromagnetic induction inner heating. The magnesium vacuum reduction furnace comprisesa furnace body, wherein a plurality of cylindrical baskets are arranged in the furnace body in a honeycomb shape, a single excitation coil is embedded in the wall of each basket body, is introduced from the bottom of the wall of the basket body, rises spirally, and is led out from the top; the excitation coils of the plurality of baskets are connected in series, and then led outside the furnace body by an insulating sealing device on the furnace body to be connected with a power device; electric energy is transmitted to the baskets in a contactless manner to heat reaction furnace charge; the whole heating body is uniformly heated and cannot be damaged by local high temperature. The problems of severe excitation coil loss, high inductance leakage and high cost of required reactive power compensation capacitance of existing electric internal heating type vacuum reduction furnaces are solved. The vacuum reduction furnace is reasonable in design, distribution of the temperature field of the reduction furnace can be adjusted, and heat transfer efficiency is high. The vacuum reduction furnace is mainly used for high vapor pressure production of metals such as magnesium, lithium, strontium, calcium and the like with a thermal reduction method.

Description

technical field [0001] The invention relates to the technical field of vacuum metallurgical equipment, in particular to a single-helix embedded excitation type electromagnetic induction internal heating magnesium vacuum reduction furnace, 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 oxidati...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a single-spiral embedded excitation type electromagnetic induction internal heating to solve the technical problems of serious excitation coil loss, large leakage inductance and high cost of reactive power compensation capacitors in the existing electric heating internal heating vacuum reduction furnace. Magnesium Vacuum Reduction Furnace

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