Effects of gangues on the carburizing and melting behavior of iron ore.
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Accession number;05A0248792
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| Title;Effects of gangues on the carburizing and melting behavior of iron ore. |
| Author;
MATSUI TAKASHI
(JFE Steel Corp., Steel Res. Lab., JPN)
HARA YOSHIAKI
(JFE Steel Corp., Steel Res. Lab., JPN)
TAKEDA KANJI
(JFE Steel Corp., Steel Res. Lab., 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.18-21(2005)
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| Figure&Table&Reference;FIG.7, TBL.2, REF.7 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;As a part of a research program on the reduction and carburization and melting of iron ore at low temperature for realizing low temperature tapping at a blast furnace, the titled study is conducted. Various reduced iron from ore and iron ores are coated by gangues for preparing samples in the present study, and the samples are heated in an alumina crucible to observe the melt-reduction behavior at 1200 to 1600 .DEG.C. by a laser microscope. Furthermore, high temperature softening tests are conducted with carbon composite iron ore pellets (CCIP) to confirm macroscopically the obtained data by the laser microscope. The results obtained are that some ore may concentrate gangues, and some don't. The former ore can be mixed with flux to decrease the melting points of the gangues. The latter ore is confirmed to be carburized at lower temperatures without disturbing effects of gangues, that the main mechanism of carburization is the direct contact between the carbonaceous material and reduced iron, that for realizing low temperature carburization melting, the selection of ore not to be enriched by gangues, or the additions of flux to decrease the melting points of the gangues to make the contact of the reduced iron with carbonaceous material possible. |
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