| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain only pure material by eliminating only impurities from pure material containing the impurities (mixture) by the principle of fractional crystallization or recrystallization. <P>SOLUTION: The screw conveyer type purifying device includes a screw conveyer 200 having a hollow cross section, formed so as to extend in a longitudinal direction, for moving the mixture inside, and a reaction adjusting part for separating the mixture into the pure material and impurities and moving them by controlling an internal temperature of the screw conveyer so as to repeat dissolution and solidification operation of the mixture. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
