Roy G Lewis

Title: Roy G Lewis: Innovator in Gallium Extraction Processes

Introduction

Roy G Lewis is a notable inventor based in Tucson, AZ (US). He has made significant contributions to the field of chemical engineering, particularly in the extraction of metals from aqueous solutions. With a total of 3 patents to his name, Lewis has developed innovative processes that enhance the recovery of valuable metals.

Latest Patents

One of his latest patents is titled "Process of extraction of gallium from aqueous solutions thereof." This invention presents an improved method for extracting gallium, allowing for its recovery in a very pure form, either as the metal or as the hydroxide. The process involves two extraction steps and two strip or scrub steps, utilizing different extractants for each extraction. The first extraction employs 8-hydroxyquinoline extractant, while the second uses an amine extractant. This liquid-liquid extraction process utilizes water-insoluble extractant compounds in a water-immiscible organic solvent.

Another significant patent is the "Solvent extraction process," which improves the recovery of metal values, particularly copper, from aqueous solutions containing copper and iron. This improvement focuses on increasing the copper to iron ratios in the loaded organic extractant phase. The method includes washing the loaded organic extractant phase with an aqueous acidic scrub solution containing at least a portion of electrolyte before stripping the copper values.

Career Highlights

Roy G Lewis is currently associated with Henkel Corporation, where he continues to apply his expertise in chemical processes. His work has contributed to advancements in metal extraction technologies, making significant impacts in the industry.

Collaborations

Throughout his career, Lewis has collaborated with notable colleagues, including Stephen M Olafson and Gary Alan Kordosky. These collaborations have fostered innovation and development in their respective fields.

Conclusion

Roy G Lewis stands out as an influential inventor in the realm of metal extraction processes. His innovative patents and contributions to Henkel Corporation highlight his commitment to advancing chemical engineering practices.