EFFECT OF TEMPERATURE AND TIME ON THE WEIGH LOSS AND PHASES DURING CARBOTHERMIC REDUCTION OF BASICMANGANESE ORE IN PRESENCE OF PKS AND HYDROGEN

1 WA KALENGA Michel Kalenga
Co-authors:
1 NYEMBWE Didier Kasongo
Institution:
1 University of Johannesburg, Faculty of Engineering and Built Environment, School of Mines, Metallurgical and Chemical Engineering, Johannesburg, South Africa, michelk@uj.ac.za; nyembwek@cput.ac.za
Conference:
35th International Conference on Metallurgy and Materials, OREA Congress Hotel Brno, Czech Republic, EU, May 5 - 7, 2026
Proceedings:
Proceedings 35th International Conference on Metallurgy and Materials
ISBN:
978-80-88365-32-7
ISSN:
2694-9296
Licence:
CC BY 4.0
Metrics:
341 views
Abstract

Generic coke for carbothermic reduction has become for decades a global threat to the environment. Studies on mass losses during carbothermic reduction using generic coke has been largely investigated for different types of manganese ore. However, the use of greener process and their impacts on different parameters remain insufficient. The current study investigates the use of a combination of hydrogen, argon and biochar on the mass loss during carbothermic reduction of basic south African manganese ore. Temperature varied from 1200 to 1500oC with 100oC. H2/Ar ratio varied at 25/75, 50/50 and 75/25 ratio for each temperature and their impact on the mass loss assessed. A comparison study between the mass loss when hydrogen was used and when biochar only was used was conducted. Results demonstrate a general trend of increasing mass loss with temperature increase as well as time increase. However, in presence of hydrogen the mass loss has a higher mass loss than when biochar is used alone.

Keywords: Metallurgy, Manganese, Carbothermic reduction, mass loss, hydrogen

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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