| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a treating method of steelmaking slag enabling a highly productive stabilizing treatment of steelmaking slag at a low treating cost, and capable of reducing the amount of CO<SB>2</SB>emission. <P>SOLUTION: In a treating method of steelmaking slag in which CaO in the steelmaking slag is carbonated by supplying CO<SB>2</SB>gas while mechanically stirring the steelmaking slag, the steelmaking slag is stirred under a condition wherein particles having a diameter of 10-40 mm are contained in the slag, and the space filling rateηto the stirring vessel is set at 0.03-0.15 to achieve high productivity. Further,η, a vessel diameter D, a number of rotationω, a water content M, a free lime concentration before the treatment, and a target free lime concentration after the treatment are specified. Further, it has become possible to specify the relation between D andω, from a target value of the treatment productivity Q, a free lime concentration before the treatment, and a target free lime concentration after the treatment. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
