Abstract
For the purpose of ascertaining the properties of sintered iron ore, the authors synthesized fayalite and other specimens from ferric oxide and quartz sand by reduction method with solid carbon and CO-gas, and investigated their microstructure, reducibility and some other properties. The outline of the results obtained were as follows:-Fayalite could be synthesized by the reduction method, and crystalized thoroughly to form a lathlike shape, a pillar shape or an irregular polyhedral tabular shape. But, when the heating temperature was above the liquidus line of FeO-SiO2 diagram, fayalite and its eutectic matters were liable to present glassy state.In the other sintering test at 1000-1105°C of small briquettes which were made from the raw materials of coke powders and two kinds of ores, a peculiarly characteristic structure, which indicated the formation of Wüstit phase and metallic iron during sintering process, was recognized.
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