| 摘要 |
PURPOSE:To reduce briquetting energy and also to improve sintered-ore quality, by screening starting material for sintering and by using the oversize product as a sole to be used at the time of sintered ore manufacture and also using the undersize product as a sintering material. CONSTITUTION:Ore as centering material in which that of <=3.0wt% content of water of crystallization and >=5mm grain size comprises >=20wt% and which is comparatively reduced in heat crack characteristic is classified by means of a 4-6mm sieve (e.g., 5mm sieve) 9 into the oversize and the undersize product. Next, the oversize product is fed to a sole hopper 1 of a DL-type sintering machine and, on the other hand, the undersize product is fed to drum mixer 8 to undergo pelletization with the addition of water and then fed into a surge hopper 2 as sintering material. Subsequently, the sole hopper is supplied from the sole hopper 1 onto a moving pallet 4 of the DL-type sintering machine until a thickness of about 60mm is reached, and then, the sintering material is fed onto the above from the surge hopper 2 so that a thickness of about 450mm is reached, followed by downward suction at a pressure of about 1,000mmH2O so as to carry out sintering with high efficiency.
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