Iron Ore Processing Haematite Blog Sobre Obsesión Production Of Iron And Steel 4/27/ 15 iron ore common iron ores include: hematite fe2o3 70 % iron ( a common iron ore) magnetite fe3o4 72 % iron limonite fe2o3 + h2o 50 % to 66 % iron siderite feco3 48 percent iron to create a ton of pig iron, you start with 2 tons of ore, 1 ton ...