Susumu Makino

Title: **Innovative Contributions of Susumu Makino in Nickel Sulfate Purification**

Introduction

Susumu Makino, an accomplished inventor based in Niihama, Japan, has made significant strides in the field of nickel sulfate purification. With a total of two patented innovations, his work plays a crucial role in enhancing the efficiency and effectiveness of nickel extraction processes in the mining and metallurgical industries.

Latest Patents

Makino's most recent patents focus on methods for purifying a nickel sulfate solution through solvent extraction. The first patent details a comprehensive approach to purifying crude nickel sulfate solutions while minimizing the environmental impact. This method allows for the effective removal of impurities, such as cobalt, calcium, magnesium, iron, zinc, copper, sodium, and ammonia, thereby resulting in the production of pure nickel sulfate. Notably, it incorporates a three-step process that includes an extraction phase using an organic acid extractant, a scrubbing phase to eliminate sodium and ammonia, and a second purification phase that exchanges nickel for impurities.

The second patent presents a sophisticated multi-stage, counter-current extraction system that enhances the extraction of nickel from crude solutions. In this method, the crude nickel sulfate solution is treated with organic extractants in a series of extractors connected in a systematic flow. This meticulous design ensures that nickel is efficiently extracted while concurrently removing sodium and ammonium impurities, thus optimizing the overall process.

Career Highlights

Susumu Makino is associated with Sumitomo Metal Mining Company, Ltd., a prominent entity in the non-ferrous metal sector that is renowned for its innovative approaches in mining and processing. His work there has garnered attention for its originality and its potential impact on the industry, particularly in improving nickel recovery methodologies.

Collaborations

Makino's innovative projects have flourished in collaboration with esteemed coworkers, notably Naoyuki Tsuchida and Masaki Imamura. Their collective expertise has bolstered the development of advanced solutions in nickel processing, making notable contributions to the field of metallurgy.

Conclusion

Susumu Makino stands out as a significant figure in the realm of nickel sulfate purification, with patented innovations that address critical challenges in the industry. His efforts at Sumitomo Metal Mining Company, Ltd., alongside talented collaborators, continue to pave the way for advancements in sustainable and efficient nickel extraction processes. As the demand for nickel rises in various applications, Makino's work is set to play a vital role in shaping the future of metallurgical practices.