METHOD AND APPARATUS FOR THE DEPHOSPHORIZATION OF IRON ORE

摘要

Method for the dephosphorization of iron ore with a phosphorous content greater than 0.5% of magnetite, hematite or mixed nature, comprising: - pre-conditioning of the iron ore by means of a solid or pre-conditioning compound or in solution, with a content less than 5% in weight of the total ferrous mixture; - an oxidizing roasting of the iron ore; - a subsequent leaching, to obtain a final concentrate with a reduced phosphorus content, with a reduction higher than 85%.