METALLURGICAL PROCESS FOR PRODUCING MAGNESIUM

摘要

In a metallurgical process for producing liquid Mg, dolomite is burnt to give a mixed oxide CaO MgO and a production furnace (11) is charged with this mixed oxide together with an FeAl alloy and gaseous Mg is withdrawn from the furnace at atmospheric pressure and condensed to give liquid Mg. A second furnace (13) is charged with coal and with slag from the first furnace (11), whereby liquid FeAl alloy is reduced out in this second furnace and returned to the first furnace and calcium carbide, CaC2, is tapped from the second furnace. The calcium carbide formed in this manner can be used to produce gaseous Mg in a third furnace (17).