Process for preparing magnetite (Fe3O4) and derivatives ...
The invention claimed is: 1. Process for preparing magnetite (Fe 3 O 4) or derivatives thereof, comprising the steps: a) preparing an aqueous solution A of a Fe(III) salt, b) preparing an aqueous solution B of an iodide salt, c) mixing solutions A and B to obtain a first precipitate, d) separating the first precipitate to obtain a filtrate, e) hydrolyzing the filtrate obtained in step d)