Electromagnetic reduction roasting method and device for manganese oxide ores

Abstract

The invention discloses an electromagnetic reduction roasting method and an electromagnetic reduction roasting device for manganese oxide ores. The method comprises the following steps: winding LC oscillator circuits (9) outside a roasting tube (8); and enabling the LC oscillator circuits (9) to generate alternating magnetic fields which enable the roasting tube (8) in the LC oscillator circuits (9) to induct and then to heat so as to provide a reaction environment for the manganese oxide ores in the roasting tube (8). The device comprises the roasting tube which is vertically arranged, wherein a feeding hole is formed in the top end of the roasting tube; two LC oscillator circuits are wound outside the roasting tube; a winding spacing of the LC oscillator circuit wound on the upper half part of the roasting tube is 100-300 mm, and the corresponding LC oscillator circuit is used as a pre-heating section; and a winding spacing of the LC oscillator circuit wound on the lower half part of the roasting tube is 20-100mm, and the corresponding LC oscillator circuit is used as a reducing section. The electromagnetic reduction roasting device has the beneficial effects of being energy-saving, uniform in temperature, long in service life, continuous in discharge, and good in operation environment.

Description

technical field [0001] The invention relates to a reduction roasting method and device for manganese oxide ore, in particular to an electromagnetic reduction roasting method and device for manganese oxide ore. Background technique [0002] At present, my country has become the world's largest consumer of manganese resources. Iron and steel output has jumped to the first place in the world, and iron and steel smelting must not be separated from manganese resources. The output of electrolytic manganese metal products accounts for more than 90% of the world, and my country is also the world's most important producer of electrolytic manganese dioxide and industrial manganese sulfate. However, my country's manganese resource reserves are very limited, mainly distributed in Hunan, Guangxi, Guizhou and other provinces, and most of them are poor ores, and there are almost no high-grade rich ores that meet international commodity grades. my country needs 15 million tons of manganes...

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Problems solved by technology

Sulfur dioxide gas leaks from gas combustion, and the operating environment for workers is relatively harsh

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