Method for producing iron feedstock

Details Method for producing iron feedstock Method for producing iron feedstock

C - Chemistry, Metallurgy

22

B

C22B 7/00 (2006.01) C21B 13/00 (2006.01) C22B 3/46 (2006.01) C22B 5/10 (2006.01) C22B 7/02 (2006.01) C22B 19/28 (2006.01) C22B 19/30 (2006.01) C22B 19/34 (2006.01)

Patent

CA 2206555

A method for producing an iron-based feedstock suitable for use as the feedstock for steel mills, from industrial waste streams, by treating the waste stream with an ammonium chloride leaching solution, separating the undissolved precepitates comprising iron compounds from the leachant solution, and further treating the undissolved precipitants by elevated temperature roasting, resulting in the iron-based feedstocks.

Procédé permettant de produire à partir de courants de déchets industriels, une charge à base de fer pouvant être utilisée comme charge d'alimentation dans des aciéries. Le procédé selon cette invention consiste à traiter le courant de déchets avec une solution de lixiviation au chlorure d'ammonium, à séparer, de la solution de lixiviation, les précipités non dissous comprenant des composés de fer, puis à traiter les précipitants non dissous par calcination à température élevée. On obtient ainsi les charges d'alimentation à base de fer.

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