| 摘要 |
PROBLEM TO BE SOLVED: To provide a calcium carbonate molded body obtained by blending broken stone-broken powder and slaked lime for effectively utilizing broken stone-broken powder as waste, and to provide a method for producing the same. SOLUTION: Provided is the calcium carbonate molded body effectively utilizing broken stone-broken powder as waste, wherein slaked lime of 40 to 60 pts.mass of the mixture of slaked lime and broken stone-broken powder; broken stone-broken powder of 40 to 60 pts.mass; a shape retaining material of natural organic acid of 0.2 to 0.8 pts.mass in the external ratio of the mixture of the slaked lime and the broken stone-broken powder; and water of 2 to 6 pts.mass of the slaked lime are kneaded, the kneaded mixture filled into a molding flask is press-formed under 100 to 200 MPa, and the molded body after demolding is subjected to carbonation acceleration curing at an accumulated material age of 1,000 to 2,000 days. The method for producing the same is also provided. COPYRIGHT: (C)2010,JPO&INPIT |
