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Continuous tests with various ferrous reductants
Screen analysis of crushed nonmagnetic taconite rock reject
30 percent Fe 36-foot rotary kiln Altered scrap atmosphere automobile bodies automobile scrap Average Batch roasting blast furnace borings and turnings Bureau of Mines burner Composite Magnetic Nonmagnetic conversion to magnetite crushed discharge drum feed rate feet ferric oxide ferrous scrap Flowmeter goethite heated hematite high-grade inch iron content iron recovery kiln product magnetic concentrate magnetic conversion magnetic fraction Magnetic Nonmagnetic Composite magnetic roasting magnetic separation Magnetic tube test Mather Mesabi range mesh metallic iron mixture natural gas nitrogen Nonmagnetic Composite Magnetic nonmagnetic taconite sample operation ore-to-scrap ratio oxygen percent Analysis percent Fe Fe++ percent iron percent Total Fe pounds per hour prereduced pellets Product Weight quantity of scrap reactants reaction reducing gases Reduction Roasting ROASTING OF IRON rock reject variety scrap iron shown in table silica SiO2 taconite plants temperature tion Total Fe Fe total iron trommel turnings and borings water vapor weight-percent