Company Filing History:
Years Active: 1983-1985
Title: Inventor Johan S. Leirnes: Pioneering Innovations in Lead Production
Introduction
Johan S. Leirnes, an inventive mind hailing from Skelleftehamn, Sweden, has made significant contributions to the field of metallurgy, particularly in lead production. With three patents to his name, Leirnes stands out as a significant figure in his industry, working for Boliden Aktiebolag, a leading mining and metals company.
Latest Patents
Leirnes’s latest innovations include methods for producing lead from both sulphidic and oxidic lead raw materials. His first patent involves a method to produce lead from moist lead-sulphide concentrates and oxidic or sulphatic raw materials. Through a detailed roasting and reaction process, this method successfully forms sulphide-containing granulates, which can be efficiently transformed into liquid slag and molten lead in a furnace setup designed for agitation.
His second patent provides a method to obtain lead with a sulfur content of less than 2% originating from sulphur-containing oxidic materials contaminated with zinc. This process includes the utilization of a furnace for the smelting of charged materials combined with iron-containing fluxes. By carefully managing the reduction agents and the heating process, this method ensures optimal lead recovery and slag formation.
Career Highlights
Johan S. Leirnes's career has been characterized by a dedication to innovation. His role at Boliden Aktiebolag underscores his commitment to advancing lead production methods and enhancing overall operational efficiency in the industry. His patents not only showcase his technical expertise but also reflect his ability to solve complex problems through inventive solutions.
Collaborations
Throughout his career, Leirnes has had the opportunity to collaborate with notable colleagues, including Malkolm S. Lundstrom and Martin L. Hedlund. These collaborations have likely contributed to the successful development and refinement of his patented methods, fostering a rich environment for innovation.
Conclusion
Johan S. Leirnes continues to pave the way for future advancements in the metallurgy sector. His dedication to innovative solutions in lead production not only enhances operational methods but also paves the path for sustainable practices in the industry. With his ongoing contributions, he remains a key player in the field of inventions related to lead processing.