Location History:
- Läkarvägen, SE (2002)
- Skellefteå, SE (2002)
Company Filing History:
Years Active: 2002
Title: Innovations of Jan-Eric Sundkvist in Bioleaching and Gold Recovery
Introduction
Jan-Eric Sundkvist is a notable inventor based in Skellefteå, Sweden. He has made significant contributions to the fields of bioleaching and gold recovery, holding a total of 5 patents. His innovative methods focus on improving the efficiency of extracting valuable metals from complex materials.
Latest Patents
Sundkvist's latest patents include a method for two-stage bioleaching of sulphidic material containing arsenic. This method involves mixing the material with an acid aqueous solution to form a pulp, followed by leaching under specific conditions. The first stage occurs at a pH below 2 and temperatures ranging from room temperature to about 55°C, utilizing mesophilic and moderately thermophilic microorganisms. The second stage raises the pH to transform pentavalent arsenic into a solid state, allowing for effective separation. Another significant patent focuses on recovering gold from refractory ores and concentrates. This method enhances leaching yields by conducting cyanide treatment at elevated temperatures, specifically between 60-80°C, in an alkaline environment.
Career Highlights
Jan-Eric Sundkvist is associated with Boliden Mineral AB, a company known for its expertise in mining and metallurgy. His work has contributed to advancements in sustainable mining practices and the efficient recovery of precious metals.
Collaborations
Sundkvist has collaborated with notable colleagues such as Börje Lindström and Åke Sandström, enhancing the impact of his innovative work through teamwork and shared expertise.
Conclusion
Jan-Eric Sundkvist's contributions to bioleaching and gold recovery demonstrate his commitment to innovation in the mining industry. His patents reflect a deep understanding of complex chemical processes and a drive to improve metal extraction methods.