| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a phosphorus recovery material favorable in reactivity with phosphorus and excellent in sedimentation of an aggregate formed by adsorbing phosphorus, and to provide a method of manufacturing the same. <P>SOLUTION: The phosphorus recovery material is manufactured by adding lime to a silica dissolved liquid in which alkali-soluble silica in a readily soluble silica raw material is dissolved with NaOH, heating the mixture to generate an amorphous calcium silicate hydrate, sedimentating and separating an insoluble residue, and recovering and drying the aggregate of the amorphous calcium silicate hydrate and Ca(OH)<SB POS="POST">2</SB>suspended in a supernatant, and contains Ca(OH)<SB POS="POST">2</SB>of 2.5-80 wt.%, and its Ca/Si molar ratio is 1.0-7.0. <P>COPYRIGHT: (C)2012,JPO&INPIT |
