Manganese Carbonate Magnetic Separation

Manganese Carbonate Magnetic Separation

Recovery of cobalt and manganese from residue of trimellitic acid manufacture and recovery as 4carboxyphthalic anhydride by extracting the residue with an aqueous alkaline solution containing carbonate ions which leaves a precipitate of metal carbonates dissolving said precipitate as the metal chlorides and at an upwardly adjusted pH adding powdered manganese to precipitate metallic cobalt

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