Coal cleaning by froth flotation Iowa State University Digital .
Iowa coals did not respond as well to froth flotation as Appalachian coals. .. ture, design of the flotation machine, retention time, and reagent dosage. Separation of Pyrite ... Marietta Co., Summit, New Jersey) was used to grind coal to fine size. 6. .. The results with Pittsburgh coal were unusual, inasmuch as the recovery.Live Chat