Movable electric furnace coal injection method for replacing coke w anthracite in electrosmelting by fire method

Abstract

The invention relates to a technology and equipment used in fire ore-smelting electric furnace smelting production, in particular to a movable electric furnace coal injection method for replacing coke by anthracite in electrosmelting by a fire method. The method is characterized in that when raw materials in a smelting furnace is heated to a fusion state, a mixture of anthracite powder and air or a mixture of anthracite powder and oxygen is added below the liquid level in the furnace. The invention is obviously suitable for all production technologies adopting electric furnaces for smelting and needing carbonaceous raw materials, thereby saving electric energy and coke.

Description

Coal injection method of mobile electric furnace using anthracite instead of coke in pyroelectric furnace smelting technical field The invention relates to a technology and equipment in the smelting and production of pyrothermal electric furnaces, in particular to a coal injection method for a mobile electric furnace in which anthracite is used instead of coke in the pyroelectric furnace smelting. Background technique Pyrometallurgy refers to various operations that use fuel, electric energy or other energy sources to generate high temperatures, and use metallurgical furnaces at high temperatures to separate valuable metals from a large number of gangues in concentrates. Also known as pyrometallurgy, it is a metallurgical process that uses high temperature to extract metals or metal compounds from ores, and is the main method of metallurgy. In this process, no aqueous solution participates in the reaction, so it is also called dry metallurgy. It is mainly used in iron and...

AI Technical Summary

Problems solved by technology

Existing electric furnaces for smelting copper, nickel, iron alloys, calcium carbide, etc. are usually bulky, and three-phase electrodes are inserted in the furnace, which are roughly distributed in an equilateral triangle. The distribution of oxygen content is very inhomogeneous, resulting in inefficient localized reduction reactions

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