Method for recovery of cobalt and manganese from spent cobalt-manganese-bromine (cmb) catalyst and method for producing cmb catalyst including the recovery method

Abstract

Disclosed is a method for recovering cobalt and manganese from a spent cobalt-manganese-bromine (CMB) catalyst. The method includes (a) continuously leaching a spent CMB catalyst with sulfuric acid, (b) separating the leachate into a solution and a residue, (c) extracting the solution with a solvent, and (d) washing the extract with water. According to the method, high-purity cobalt and manganese can be recovered in high yield from a spent CMB catalyst while minimizing the amount of impurities. Further disclosed is a method for producing a CMB liquid catalyst from the extract containing cobalt and manganese obtained by the recovery method.

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