extraction de dolomite écrasée
extraction of magnesium from dolomite in ghana. extraction of magnesium from dolomite for ore in uganda extraction of magnesium a from magnesite or dolomite the ore is first calcined to form the oxide mgco3 mgo co2 caco3 mgco3 cao mgo 2co2 the metal is obtained from the oxide or the mixed oxides as follows i from mgo the oxide is mixed with carbon and heated