NATURAL RESOURCES SUSTAINABILITY: IRON ORE MINING
Because the energy demand depends on the iron grade, a magnetite with an iron content of 72 % can be compared to a hematite with an iron content of 62 %. For global processes involving iron ore, G1 hematite demands 9,978 MJ/ton of ore, while G2 magnetite requires 11.542 MJ/ton of …