| 摘要 |
PCT No. PCT/JP85/00192 Sec. 371 Date Aug. 15, 1985 Sec. 102(e) Date Aug. 15, 1985 PCT Filed Apr. 12, 1985 PCT Pub. No. WO86/02668 PCT Pub. Date May 9, 1986.Mini-pellets made of raw materials of fine powder iron ores are indurated, and effected with diffusion bond. A plurality of said treated mini-pellets are combined with calcium ferrites at the surface layers thereof. Thus, agglomerated ores are produced, wherein main grain sizes of said fine powder iron ores are not more than 5 mm, and are subjected to a primary pelletization with flux, and solid fuels are coated in a secondary pelletization to produce the mini-pellets of 3 to 9 mm diameter, and the produced mini-pellets are undertaken with induration in a travelling grate typed sintering furnace. Depending upon the present agglomerated ores and the producing method therefor, the raw materials may be selected from a wide range of grain sizes, and a blow faculty is enough to be small, and producing yield of the agglomerated ores may be increased, having improved qualities of high RI and low RDI.
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