| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for treating fine grains of demolished concrete, in which a continuous treatment is performed and heating energy is not needed. <P>SOLUTION: Fine grains 14 of demolished concrete are continuously charged into a mill pot 40 from a fine grain feeding part 12, and air W1 for circulation is sent to the mill pot 40 by a blower device 58. The mill pot 40 rotates around its own axis while revolving around the revolution axis 42 of a planetary mill 36, and thereby, the charged fine grains 14 of the demolished concrete are pressed to the inner wall of the mill pot 40 by centrifugal force F, and are ground and kneaded. A fine powder 34 of a cement hardened material, separated by grinding and kneading, is removed together with air W1 and recovered by a fine powder recovery device 60. Fine aggregate 32 from which the fine powder 34 is removed is extruded from a taking-out port 50 and recovered in a fine aggregate recovery part 52. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
