Metallurgical furnace

Device used to heat and munipuliate metals / From Wikipedia, the free encyclopedia

A metallurgical furnace, more commonly referred to as a furnace, is an industrial furnace used to heat and melt metal ore to remove gangue, primarily in iron and steel production. The heat energy to fuel a furnace may be supplied directly by fuel combustion, by electricity such as the electric arc furnace, or through induction heating in induction furnaces. There are several different types of furnaces used in metallurgy to work with specific metal and ores.[1]

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Industrial furnace from 1907.
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The Manufacture of Iron -- Filling the Furnace, an 1873 wood engraving
Modern TLS furnace used in copper smelting during heat up.
Modern TLS furnace used in copper smelting during heat up.