Most residues are contaminated with Oil, carbon, Sulfur, etc. This elements have to be treated out first.
Conversion of Low carbon residues in raw material for the V-Chemistry. The residues are treated in a pyrometallurgic way. Results are Nickel Matte and V-Slag, which will be leached. After liquid/solid separation Vanadium-Chemicals are precipitated, which then are refined through calcination/reduction to further products.
Hydrometallurgy for conversion of low carbon catalysts containing Vanadium, in Ammoniummetavanadate, Molybdenohydrates and an accumulative alloy containing Aluminiumoxid, Nickel and Cobalt
Hydrometallurgy for conversion of low carbon catalysts without Vanadium, in Ammoniumparamolybdate, Aluminiumoxid and Cobalt-Nickelsolution.
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