Matti J Hamalainen

Title: Matti J Hamalainen: Innovator in Cobalt Recovery and Production

Introduction

Matti J Hamalainen is a notable inventor based in Kokkola, Finland. He has made significant contributions to the field of cobalt recovery and production, holding 2 patents that showcase his innovative approaches.

Latest Patents

His latest patents include a process for the recovery of cobalt from its impure, aqueous solutions. In this process, cobalt is recovered as a finely-divided and anhydrous salt from impure, nickel-bearing, aqueous solutions of cobalt. The method involves exposing the aqueous solution to oxidation at an elevated temperature in the presence of ammonia and the respective ammonium salt. The formation of cobalt (III) hexammine ions is catalyzed with activated carbon or solid sulfides. A cobalt (III) hexammine salt is then crystallized from the solution, separated, and pyrolyzed to form a cobalt (II) salt, with the released ammonia being returned to the oxidation stage. Another patent focuses on the production of extra fine cobalt powder, which is manufactured by pyrolyzing a cobalt (III) hexammine salt and then reducing the obtained oxide.

Career Highlights

Matti is associated with Outokumpu Oy, a company known for its expertise in metallurgy and materials technology. His work has significantly advanced the methods of cobalt production, contributing to more efficient and environmentally friendly processes.

Collaborations

Matti has collaborated with notable colleagues, including Jussi K Rastas and Heikki A Tiitinen, who have contributed to his research and development efforts.

Conclusion

Matti J Hamalainen's innovative work in cobalt recovery and production highlights his role as a key inventor in the field. His patents reflect a commitment to advancing technology and improving industrial processes.