Method for obtaining valuable products

Details Method for obtaining valuable products Method for obtaining valuable products

C - Chemistry, Metallurgy

01

B

C01B 3/32 (2006.01) C01B 3/38 (2006.01) C01F 7/06 (2006.01) C01G 49/08 (2006.01) C04B 18/04 (2006.01) C10G 2/00 (2006.01)

Patent

CA 2651959

The invention relates to a method for obtaining valuable products using red mud, which accumulates during the manufacture of aluminium by the Bayer method. The method according to the invention comprises the steps: a) reduction of at least one part of the iron(III) oxide and/or iron(III) hydroxide using at least one reductant that contains at least one hydrocarbon; and b) separation of at least one solid phase of the reaction mixture from at least one liquid and/or gaseous phase, the solid and/or liquid and/or gaseous phase comprising at least one valuable product that at least contains magnetite and the reductant comprising methane and/or natural gas and/or ethanol and/or carbon.

Procédé de production de matière de valeur à l'aide de boue rouge résultant du procédé Bayer utilisé lors de la production de l'aluminium. Ledit procédé consiste (a) à réduire au moins une partie d'un oxyde de fer (III) et / ou d'un hydroxyde de fer (III) contenue dans de la boue rouge avec au moins un agent de réduction contenant au moins un hydrocarbure, et (b) à séparer au moins une phase solide du mélange de réaction d'au moins une phase liquide et / ou gazeuse, la phase solide et / ou liquide et / ou gazeuse contenant au moins une matière de valeur renfermant au moins de la magnétite et l'agent de réduction étant du méthane et / ou du gaz naturel et / ou de l'éthanol et / ou du carbone.

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