Method for resource recovery from a bauxite residue
AssigneeErmafa Environmental Technologies GmbH
InventorWolfgang KAPAUN
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Abstract
A method for resource recovery from a bauxite residue, the method including the following steps: a) providing an aqueous suspension of the bauxite residue; b) adjusting a pH of the aqueous suspension to a value between 7.2 and 12.2; c) at least partial deagglomerating of suspended mineral agglomerates of the bauxite residue; and d) separating the resulting mixture into an iron-rich fraction and at least one further, preferably silicate-rich fraction, wherein at least one flocculant is added to the aqueous suspension, wherein the at least one flocculant includes starch.
Claims15
A method for resource recovery from a bauxite residue, the method comprising the following steps:
- a) providing an aqueous suspension of the bauxite residue;
- b) adjusting a pH of the aqueous suspension to a value between 7.2 and 12.2;
- c) at least partial deagglomerating of suspended mineral agglomerates of the bauxite residue;
- and
- d) separating the resulting mixture into an iron-rich fraction and at least one further, preferably silicate-rich fraction,
- wherein at least one flocculant is added to the aqueous suspension, wherein the at least one flocculant comprises starch.
Dependencies are inferred from the claim text.