Company Filing History:
Years Active: 1977
Title: The Innovative Contributions of Siegbert Schmidt
Introduction
Siegbert Schmidt is a notable inventor based in Munich, Germany. He has made significant contributions to the field of metallurgy, particularly in the recovery of electrolytic copper. His innovative processes have implications for both industry and environmental sustainability.
Latest Patents
Siegbert Schmidt holds a patent for a process aimed at recovering electrolytic copper of high purity. This process utilizes a copper sulfate solution obtained through the sulfuric acid leaching of cupriferous material. The solution contains various impurities, including Fe, As, Sb, Bi, Se, Te, Sn, Pb, Cl, Ag, Hg, and PO.sub.4. The purification process is conducted in two steps. In the first step, the pH is adjusted to 2.7-3.3 using Ca(OH).sub.2, and the potential is set to at least 575 mv with an oxidizing agent, such as air, at a temperature of 50.degree.-90.degree. C. Impurities precipitate and are separated, while Se, Cl, and possibly Ag and Hg remain in solution. The second step involves reducing the potential to below 350 mv by adding a cupriferous reducing agent, such as Cu or Cu.sub.2 O, at a pH below 3 and a temperature below 50.degree. C. This results in the precipitation of impurities as copper (I) compounds, allowing for the electrolysis of high-purity copper, which has a conductivity of at least 58.8 mho .times. m/mm.sup.2 and a maximum semi-hard temperature of 200.degree. C.
Career Highlights
Siegbert Schmidt is associated with Duisburger Kupferhütte, where he has applied his expertise in metallurgy. His work has contributed to advancements in the efficiency and purity of copper recovery processes.
Collaborations
Throughout his career, Schmidt has collaborated with notable colleagues, including Norbert L. Piret and Hans Joachim Rabben. Their combined efforts have furthered the development of innovative solutions in the field of metallurgy.
Conclusion
Siegbert Schmidt's contributions to the recovery of electrolytic copper highlight his innovative spirit and dedication to advancing metallurgical processes. His work not only enhances industrial efficiency but also promotes environmental sustainability in metal recovery.