Kyushu University Academic Staff Educational and Research Activities Database
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Hajime Miki Last modified date:2022.11.14

Associate Professor / Frontier Education Center for Global Cooperation in Earth Resources Engineering
Department of Earth Resources Engineering
Faculty of Engineering


Graduate School


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Homepage
https://kyushu-u.pure.elsevier.com/en/persons/hajime-miki
 Reseacher Profiling Tool Kyushu University Pure
http://www.tj.kyushu-u.ac.jp/leading/en/index.html
Advanced Graduate Program in Global Strategy for Green Asia .
Phone
092-802-3349
Academic Degree
Ph.D of Engineering
Country of degree conferring institution (Overseas)
No
Field of Specialization
Mining Engineering
ORCID(Open Researcher and Contributor ID)
https://orcid.org/0000-0001-6616-0304
Total Priod of education and research career in the foreign country
10years00months
Outline Activities
mineral processing, hydrometallurgy and electrochemistry of various minerals, especially on copper minerals are investigated for impurity removal and upgrading grade. after ore grinding and classification, flotation experiments are carried out. also concentrate and mineral hydrometallurgy is carried out. these separation and leaching behaviour is investigated with various electrochemical method. for surface analysis such as XPS, XRF, SEM-EDX, MLA, and AFM are also performed. In particular, we have obtained better results on arsenic removal by flotation from arsenic-containing copper concentrates, improvement of chalcopyrite leaching, powder electrochemical methods, etc., which have been considered difficult in the past, and we are studying with the aim of further improvement.
Research
Research Interests
  • development of technology of hydrometallurgy, flotation, recycling with chemical physics and electrochemistry
    keyword : Hydrometallurgy, Flotation, Electrochemistry
    1996.04~2013.02.
Academic Activities
Papers
1. Hajime Miki, Akinobu Iguchi, Tsuyoshi Hirajima, Sasaki Keiko, ENHANCED LEACHING OF ARSENIC CONTAINING COPPER SULFIDE WITH SILVER ADDITION IN ACID SOLUTION, Proceedings of Copper2016 International Conference, 1499-1510, 2016.11.
2. Hajime Miki, Review of three leading program joint fieldwork on 2014 at Beppu geothermal area, Proc. of International Forum for Green Asia 2015, Special Issue of Evergreen – Joint Journal of Novel Carbon Resource Sciences & Green Asia Strategy, 87-89, 2015.11.
3. Hajime Miki, Review of three leading program + Texas State University, joint fieldwork on 2015 at Okinoshima island, Proc. of International Forum for Green Asia 2015, Special Issue of Evergreen – Joint Journal of Novel Carbon Resource Sciences & Green Asia Strategy, 90-92, 2015.11.
4. Hajime Miki, Tsuyoshi Hirajima, Mutia Dewi Yuniati, Keiko Sasaki, Study of Silicate Coating on Pyrite Oxidation Suppression: Fundamental Mechanism and Kinetic Analysis, Proceedings of International Symposium on Earth Science and Technology 2013, 189-192, 2013.12.
5. Hajime Miki, Tsuyoshi Hirajima, Mutia Dewi Yuniati, Keiko Sasaki, Suppression of Pyrite Oxidation by Silicate Coating with Catechol Complex Oxidation Kinetics Estimation with Electrochemistry, The 12th International Symposium on East Asian Resources Recycling Technology, 601-604, 2013.11.
6. Hajime Miki, Michael James Nicol, The kinetics of the copper-catalysed oxidation of iron(II) in chloride solutions, Hydrometallurgy 2008, Proceedings of 6th International Symposium, 971-979, 2008.10.
7. Hajime Miki, Michael James Nicol, Synergism in the oxidation of covellite and pyrite by iron(III) and copper(II) ions in chloride solutions, Hydrometallurgy 2008, Proceedings of 6th International Symposium, 646-652, 2008.10.
8. Hajime Miki, Naoki Hiroyoshi, Shigeto Kuroiwa, Masami Tsunekawa, Tsuyoshi Hirajima, Mechanisms of Catalytic Leaching of Chalcopyrite, Proceedings of 5th Copper2003-Cobre2003 International Conference, 6, 383-394, 2003.10.
Presentations
1. Hajime MIKI, Tsuyoshi HIRAJIMA, Mutia Dewi YUNIATI, Keiko SASAKI, Suppression of Pyrite and Arsenopyrite Oxidation by Silica Coating: Electrochemical aspects and the mechanism, XXVII International Mineral Processing Congress (IMPC 2014), 2014.10.
2. Hajime Miki, Tsuyoshi Hirajima, Mutia Dewi Yuniati, Keiko Sasaki, Study of Silicate Coating on Pyrite Oxidation Suppression: Fundamental Mechanism and Kinetic Analysis, International Symposium on Earth Science and Technology 2013, 2013.12.
3. Hajime Miki, Tsuyoshi Hirajima, Mutia Dewi Yuniati, Keiko Sasaki, Suppression of Pyrite Oxidation by Silicate Coating with Catechol Complex Oxidation – Kinetics Estimation with Electrochemistry, The 12th Internatonal Symposium on East Asian Resources Recycling Technology, 2013.11, [URL].
4. Michael James Nicol, Hajime Miki, Applications of the electrochemistry of fine mineral sulfides, Innovations in Natural Resource Processing, 2005.02.
5. Hajime Miki, Naoki Hiroyoshi, Shigeto Kuroiwa, Masami Tsunekawa, Tsuyoshi Hirajima, Mechanisms of Catalytic Leaching of Chalcopyrite, Copper2003 International Conference, 2003.09.
Membership in Academic Society
  • Journal of MMIJ
Educational
Educational Activities
Earth System Engineering Course lecture: resource processing
Earth Resource System Engineering Department graduate school lecture: resource processing and environmental remediation engineering
Cooperative Program Department graduate school lecture: resource separation engineering
Cooperative Program Department graduate school lecture: international human resource exchange seminar
Cooperative Program: curricurrum comittee