| 摘要 |
<P>PROBLEM TO BE SOLVED: To produce granules which are suitable for furnace raw material by appropriately granulating water-containing iron-making sludge and iron-making dust without performing special drying treatment. <P>SOLUTION: In the method for producing the granules of raw material essentially consisting of iron-making sludge and iron-making dust, a granule production device includes: a stirring blade revolved in a drum charged with the raw material to be granulated; and a stirring rotor performing rotation while being revolved in the drum together with the stirring blade. Using the granule production device, cracking treatment for the iron-making sludge and mixing treatment for iron-making sludge, iron-making dust and a solidification agent are successively performed. If required, the method further includes: a step (A) of performing preliminary granulating treatment for the raw material; and a step (B) of charging the raw material treated by the step into a tumbling granulator, and performing raw material granulating treatment and particle size regulation treatment in which and the surfaces of the granules are smoothed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
