| 摘要 |
PROBLEM TO BE SOLVED: To produce slaked lime remarkably efficient to treat an SO<SB>2</SB>or the like-containing gas by using quicklime powder and a small quantity of a reaction retarder. SOLUTION: The method of manufacturing slaked lime by slaking quicklime to produce slaked lime includes (a) a fine pore base construction step for preparing a "slaking liquid" containing 10-40 wt.% solid lime and 60-90 wt.% water by slaking quicklime for the "slaking liquid" with the excess quantity of a "slaking water" containing 2-50 pts.wt. reaction retarder per 100 pts.wt. quicklime for the "slaking liquid", (b) a pore growth step for producing wet slaked lime powder having 10-30 wt.% water using the "slaking liquid" obtained by (a) to slake quicklime for main slaking and (c) a drying step for obtaining dry slaked lime powder containing <1.0 wt.% water by heating at≤500°C to dry or by adding a proper quantity of drying quicklime to react with water in the wet slaked lime to remove water. COPYRIGHT: (C)2006,JPO&NCIPI
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