Rapid reaction between carbon and iron oxide composite introduced by milling treatment.
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Accession number;05A0248791
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| Title;Rapid reaction between carbon and iron oxide composite introduced by milling treatment. |
| Author;
KASHIWAYA YOSHIAKI
(Hokkaido Univ., Graduate School of Engineering, JPN)
ISHII KUNINOBU
(Hokkaido Univ., Graduate School of Engineering, JPN)
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Journal Title;Current Advances in Materials and Processes
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Journal Code:X0994A
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ISSN:0914-6628
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VOL.18;NO.1;PAGE.14-17(2005)
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| Figure&Table&Reference;FIG.5, TBL.2, REF.7 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The research program for creating revolutionary blast furnace operations to reduce energy consumption to a half and minimum environmental burdens has reported that the interatomic distance among reactants is the key factor in controlling the contacts of iron oxide with carbonaceous materials. Thus, the present investigation studies the effects of various conditions on the reactivity of milled mixtures of iron oxide and carbonaceous material, and the reactivity of various milled products in terms of the rate analyses, and explains the effects of the milling treatment based on the active complex theory with the obtained rate constants. The chemical reagent class hematite has different grain sizes depending on the preparation methods, and thus, the experiments are conducted considering the conditions of milling treatment. The mixed powder of hematite and graphite is milled at high temperatures, and the effects of the milling conditions including the milling environments and time on the changes of the crystal structure of the hematite and the reaction mechanisms are investigated. The results obtained show that the milling environments has the decisive influence on the reaction mechanism. The mechanism is divided to some parts for detailed discussions to be made. |
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