ELECTRIC FURNACE HAVING DUST REMOVING MEANS IN VENT PIPES

摘要

A closed-type electric furnace to be used for extremely high temperature smelting of a ferroalloy such as metallic silicon or 70 percent ferrosilicon. The furnace has at least two dual service pipes, each of which functions as a raw material charging chute and concurrently as an exhaust gas vent pipe with the aid of its branch pipe, and a plural number of single raw material charging chutes through the furnace lid, whereby each dual service pipe has an automatic dust removing machine at the forked position thereof.