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Recycling of Steelmaking Dusts.
Barnard-PG; Starliper-AG; Dressel-WM; Fine-MM
NTIS: PB 208 016 :10 pages
Methods are described for upgrading steel furnace dusts to produce high-iron pellets for recycling. These dusts contain impurities, such as zinc, lead, and copper, which reflect the character of the feed to the furnace and the operation of the furnaces. Treatment procedures described include (1) pelletization and reduction roasting to remove lead and zinc, (2) sulfation with sulfuric acid or so2, followed by leaching to remove copper and zinc and pelletization and reduction to remove lead and to metallize iron. (3) Pelletization of mixtures of dusts containing carbon, zinc and lead, followed by roasting to eliminate these elements, and (4) pelletization and roasting of mixtures of blast furnace dusts, basic- oxygen-furnace dusts, and mill scale.
NTIS Accession No.
NTIS: PB 208 016