Blowing-type induction melting furnace

Abstract

The invention provides a blowing-type induction melting furnace which comprises a furnace body, an air brick, a mechanical stirring system, a blowing system and an induction system, wherein the furnace body and a refractory crucible of the induction system form a molten pool; the inner wall of the furnace body and the induction system are partitioned and sealed through a thermal insulation material; the air brick is arranged at the bottom part or the side wall of the furnace body, directly passes through the furnace body and is communicated with the induction system and the molten pool; the mechanical stirring system comprises a mixing propeller and a control box; the mixing propeller is inserted into the molten pool and controls the rotating speed when working through the control box; the blowing system comprises a gas source and a high-pressure carrier gas transmission pipeline, and is connected with the bottom part of the furnace body through the high-pressure carrier gas transmission pipeline; an air outlet of the pipeline is opposite to the air brick; the induction system comprises an induction coil, an electromagnetic induction body, the refractory crucible and the thermal insulation material; the induction coil is in tight contact with the thermal insulation material on the inner wall of the furnace body; the thermal insulation material is arranged between the induction coil and the electromagnetic induction body; and the refractory crucible is located on the innermost layer.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a jet-type induction melting furnace. Background technique [0002] With the improvement of pyrometallurgy copper smelting intensity and copper matte grade, the copper content in copper slag is as high as 0.4%-0.8%, and the copper content in copper slag in oxygen-enriched blowing process is even as high as 3-4% (much higher than 0.3 % copper mining grade). There are two types of copper slag dilution methods in industry: slow cooling and beneficiation and pyrolysis. The slow cooling mineral processing method can only recover most of the inclusion matte, and the copper content in the mineral processing tailings is less than 0.35%, but the valuable components such as iron in the copper slag cannot be recycled. The fire depletion method is to add a vulcanizing agent to the molten copper slag for depletion treatment, and the copper-sulfur phase is recovered through se...

AI Technical Summary

Problems solved by technology

However, if the presence of carbon is strictly limited for the heated smelting material, then induction heating cannot be applied

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