Company Filing History:
Years Active: 1979-1984
Title: Heikki A Tiitinen: Innovator in Metal Recovery Processes
Introduction
Heikki A Tiitinen is a notable inventor based in Ulvila, Finland. He has made significant contributions to the field of metal recovery, holding a total of 3 patents. His innovative approaches focus on the efficient extraction of valuable metals from various waste materials.
Latest Patents
One of Tiitinen's latest patents is a process for the recovery of valuable metals from spent crude-oil. This process involves treating roasted crude-oil sulfur-extraction catalyst waste at elevated temperature and pressure with a sulfate solution. The method allows for the separation of valuable metals from aluminum in a single stage, resulting in the precipitation of aluminum as alunite. The solution retains the other valuable metals, which can then be extracted.
Another significant patent involves the recovery of cobalt from impure, nickel-bearing aqueous solutions. In this process, cobalt is recovered as a finely-divided and anhydrous salt by exposing the aqueous solution to oxidation at elevated temperatures in the presence of ammonia. The formation of cobalt (III) hexammine ions is catalyzed with activated carbon or solid sulfides, leading to the crystallization of cobalt (III) hexammine salt. This salt is then separated and pyrolyzed to form cobalt (II) salt, with the released ammonia being returned to the oxidation stage.
Career Highlights
Heikki A Tiitinen is associated with Outokumpu Oy, a company known for its expertise in metal processing and technology. His work has significantly advanced the methods used in metal recovery, showcasing his commitment to innovation in this field.
Collaborations
Tiitinen has collaborated with notable colleagues such as Jussi K Rastas and Matti J Hamalainen. Their combined efforts have contributed to the development of effective processes for metal recovery.
Conclusion
Heikki A Tiitinen's contributions to the field of metal recovery through his innovative patents demonstrate his expertise and commitment to advancing technology. His work continues to impact the industry positively.