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iron ore processing methods in moldova 1

211 Mining of Crude Ore Iron ore is a mineral substance that when heated in the presence of a reductant yields metallic iron Fe It almost always consists of iron oxides the primary forms of which are magnetite Fe 3 O 4 iron content 724 percent hematite Fe 2 O 3 iron content 699 percent and goethite Fe 2 O 3 H 2