| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a sintered ore, which improves a granulation property of a ferrous raw material inferior in the granulation property, and improves the productivity and the quality of the sintered ore. SOLUTION: (1) The method for manufacturing the sintered ore comprises adding water containing a surface active agent to the ferrous raw material inferior in the granulation property, further mixing it with a raw material which does not contain the above raw material inferior in the granulation property, then adding water and carrying out a granulating operation. In the method for manufacturing the sintered ore according to the above (1), the raw material inferior in the granulation property is preferably at least one of collected dust, iron sand, pellet feed and Maramanba ore. The raw material inferior in the granulation property preferably has such a particle size distribution in which particles with diameters of 1 mm or smaller share 50 mass% or more. The sintered raw material is made to contain preferably 30 mass% or more of the raw material inferior in the granulation property. The content of the surface active agent in the added water is preferably 0.05 mass% or more. COPYRIGHT: (C)2004,JPO&NCIPI
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