Norihito Ishimori

Title: Norihito Ishimori: Innovator in Zinc Processing Technologies

Introduction

Norihito Ishimori is a notable inventor based in Akita, Japan. He has made significant contributions to the field of hydrometallurgy, particularly in the processing of zinc. With a total of 3 patents to his name, Ishimori's work has advanced the methods used in zinc extraction and purification.

Latest Patents

Ishimori's latest patents include a method of leaching zinc concentrate and a method of sulfur purification. The method of leaching zinc concentrate involves a multi-step process that enhances the leaching rate of zinc from the concentrate. This method includes a neutral leach step, a zinc concentrate leach step, and an iron oxidation step, which significantly increases the concentration of Fe(III) ions in the leach solution. The method of sulfur purification effectively removes metal impurities from sulfur recovered from zinc concentrates. By utilizing activated alumina, this method can reduce metal impurities to 50 ppm or below, achieving a sulfur purity of at least 99.99%.

Career Highlights

Throughout his career, Ishimori has worked with prominent companies such as Dowa Mining Co., Ltd. and Akita Zinc Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative methods in zinc processing.

Collaborations

Ishimori has collaborated with notable colleagues, including Hideki Nagata and Shuji Kuramochi. Their combined expertise has contributed to the advancements in the technologies they have developed.

Conclusion

Norihito Ishimori's contributions to zinc processing through his innovative patents have significantly impacted the industry. His methods not only enhance the efficiency of zinc extraction but also improve the purity of sulfur, showcasing his dedication to advancing metallurgical processes.