Method for producing an iron feedstock from industrial furnace w

Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal

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75724, 75725, 75961, 204604, 423108, C22B 702, C22B 314, C22B 346

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056834888

ABSTRACT:
A method for the recovery of iron products, specifically direct reduced iron and iron oxide suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by treating the waste streams with an ammonium chloride leaching solution, separating the undissolved precipitates comprising iron compounds from the leachant solution, and further treating the undissolved precipitants by elevated temperature roasting, resulting in the iron feedstocks.

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patent: 4155821 (1979-05-01), Grontoft
patent: 4292147 (1981-09-01), Fray et al.
patent: 4376043 (1983-03-01), Heijwegen et al.
patent: 5208004 (1993-05-01), Myerson
patent: 5464596 (1995-11-01), Myerson
patent: 5571306 (1996-11-01), Myerson et al.
Direct Reduced Iron Iron & Steel Society Aug. 1982, TN 707 D56 p. 45.
Olper, M., "The EZINEX Process-A New And Advanced Way For Electrowinning Zinc From A Chloride Solution", International Symposium-World Zinc, Oct. 1993.

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