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| THE GROWTH AND CROSS-CONNEXION OF Fe_2O_3 PLATELETS IN CONSOLIDATION OF HEMATITE PELLET |
| Liu Fuyou Central Laboratory of Kunming Iron and Steel Company |
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Cite this article:
Liu Fuyou Central Laboratory of Kunming Iron and Steel Company. THE GROWTH AND CROSS-CONNEXION OF Fe_2O_3 PLATELETS IN CONSOLIDATION OF HEMATITE PELLET. Acta Metall Sin, 1980, 16(1): 18-126.
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Abstract The strengthening process of hematite pellets made from iron ore concentrateof Kunming Iron and Steel Company has been examined by SEM, X-ray diffrac-tion, etc. to ascertain the strengthening mechanism when they were fired undertemperatures between 1000 to 1350℃. The hematite crystallites began to growinto trigonal platelets and to cross-connect each other at temperature up to 1000℃.Until 1200℃, the cross-connexion was further strengthened into solid framework.Thus, it seems to be easily clarified why a rather firm strength of pellets isdisplayed earlier under lower firing temperatures. Perhaps, neither molten slagformed over the surface of hematite crystals with vein and impurities nor a fewof magnetite crystallized out of melt will play a dominante role in the strengtheningprocess of this hematite pellets.
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Received: 18 January 1980
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