Process for separating trivalent iron from an aqueous chloride solution
AssigneeMetallurgie Hoboken-Overpelt
InventorsAchille De Schepper, Marc Coussement
Life of this patent
Estimating the term…
Abstract
A process for separating trivalent iron from an aqueous chloride solution comprising contacting the aqueous solution with an organic phase containing an organophosphoric compound as an extracting agent for trivalent iron and at least 40 percent in volume of a long chain aliphatic alcohol, separating the iron-loaded organic phase from the aqueous solution, and re-extractng the iron from the iron-loaded organic phase by contacting the latter with water or acidulated water so as to produce an aqueous iron chloride solution. Owing to the high alcohol content of the organic phase, iron can be re-extracted with a small amount of water.
Claims12
In the process for separating trivalent iron from an aqueous chloride solution, in which the aqueous solution is contacted with an organic phase containing a neutral organophosphoric ester as an extracting agent for trivalent iron and a long chain aliphatic alcohol as an agent to prevent emulsion formation, the iron-loaded organic phase is separated from the aqueous solution and the iron is re-extracted from the iron-loaded organic phase by contacting this organic phase with water or acidulated water so as to produce an aqueous iron chloride solution, the improvement comprising that an organic phase is used which contains at least about 40 percent in volume of a long chain aliphatic alcohol.
Dependencies are inferred from the claim text.