Narumi Nanri

Title: Narumi Nanri: Innovator in Coal Evaluation and Coke Production

Introduction

Narumi Nanri is a prominent inventor based in Fukuyama, Japan. She has made significant contributions to the field of coal evaluation and coke production, holding 2 patents that showcase her innovative approaches.

Latest Patents

Her latest patents include an evaluating method for coal and a producing method for coke. The first patent discloses a method for accurately measuring the thermoplasticity of coal, which has traditionally been challenging to evaluate. This method determines whether the coal being measured does not significantly reduce the coke strength when used in a coal blend. Additionally, it introduces a method for evaluating coal as a raw material for coke, utilizing a physical property value related to thermoplasticity as an evaluation index. This process involves adding a primary or secondary amine with an aromatic ring to enhance the coal's thermoplasticity.

The second patent presents a coal mixture that maintains a high level of coke strength after carbonization, even when using coal with a large permeation distance. This innovative coal mixture consists of large-permeation-distance coal and permeation-distance-decreasing coal. The latter has specific characteristics, including a mean maximum vitrinite reflectance Ro of 1.25% or more and a total inert amount TI of 30 vol. % or less. The blending ratio of the permeation-distance-decreasing coal is carefully calculated to ensure optimal performance.

Career Highlights

Narumi Nanri is associated with JFE Steel Corporation, where she applies her expertise in coal and coke technologies. Her work has significantly impacted the efficiency and effectiveness of coke production processes.

Collaborations

She collaborates with notable coworkers, including Yusuke Dohi and Kiyoshi Fukada, contributing to advancements in their field.

Conclusion

Narumi Nanri's innovative patents and contributions to coal evaluation and coke production highlight her role as a leading inventor in her field. Her work continues to influence the industry and improve production methods.