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The coal composite iron ore hot briquette made by utilizing thermal plasticity of coal is recently developed as agglomerates without binder, which has several advantages to retain high density and strength during reaction at high temperatures.
- Yuki Tanaka, Tomohiro Ueno, Keiji Okumura, Shoji Hayashi
- 2011
Keiji Okumura's 25 research works with 294 citations and 1,824 reads, including: Carbothermic Reduction of Cr2O3 and Fe2O3 under Nonisothermal Condition ... (10-80 pct) was reported for the hot ...
gas flow and hot briquetted under 4 ton load during 2 min into a cylinder type (15 mm dia., 10 mm thick). We named them briquettes A, B, and C in order of amounts of iron ore mixed. Then, reaction and softening-melting tests of the bri-quettes were carried out in a N2 stream (0.5 Nl/min) under 1 kg load with heating from room temperature to 1400°C
May 15, 2012 · Congratulations this year go to Keiji Okumura of the ROHM Company, Japan, for his paper, “Ultra low Ron SiC Trench devices.” Selected from a total of 230 contributions, it focuses on next ...
Based on the desulfurization process of molten iron with magnesium vapor produced in situ by the aluminothermic reduction of magnesium oxide, methods for improving the desulfurization efficiency of magnesium (η S,Mg) have been studied.By use of the mixed-control model of gas- and liquid-phase mass transfer developed in a previous article, it is shown that η S,Mg can be improved by reducing ...
Effect of Stirring on the Rate of Inclusion Removal from Molten Metal Reviewed Proc. 6th Int. Iron and Steel Congr. 3 568 - 575 1990.04
May 7, 2021 · Recently, the demand for downsizing and higher efficiency of power conversion systems has been increasing in order to realize a low carbon society. For this reason, enhancing power density of power semiconductor modules is an important factor to achieve this goal. We developed electrical characteristics for a newly developed 1700V/300A All SiC module with 2nd generation trench gate SiC-MOSFETs ...
