Rare-Earth Ferroalloy Smelting DC Electric Arc Furnace

Double electrode DC electric arc furnace 500~20000kVA Rare earth is an emerging strategic resource that plays an important role in multiple fields, especially in the semiconductor and military industries. Due to the difficulty in reducing rare earth elements, slag with higher rare earth content can be obtained when smelting ores containing rare earth elements using pyrometallurgical methods. At present, the smelting of rare earth ferroalloys mainly uses slag with high rare earth content. The smelting equipment is a DC electric arc furnace, which adopts an intermittent operation method. The flux is lime and the reducing agent is 75 # silicon iron alloy, which reduces the rare earth elements in the rare earth slag to obtain rare earth iron alloy. The smelting process is different from the smelting of other types of ferroalloys. As a reducing agent, ferrosilicon is added to the furnace only after the rare earth slag and lime are completely melted, and stirring is also required to promote…

DC Submerged Arc Furnace High Temperature Melting DC Electric Arc Furnace DC Electric Arc Furnace