| 摘要 |
PURPOSE:To recover a superconductive material with high efficiency by separating a powdery superconductive material by floating from a residual part of a powder mixture contg. the powdery superconductive material utilizing Meissner effect, and recovering the superconductive material. CONSTITUTION:A powdery superconductive material S is separated from a residual part R of a powder mixture contg. the powdery super conductive material by floating S from the powder mixture and the S is recovered. For example, a raw material contg. the superconductive material after calcination is pulverized satisfactorily so as to obtain single particles consisting of a single phase. The pulverized raw material is charged together with a coolant C (e.g. liquid N2) into a separating vessel 1, and a magnetic field is generated by conducting electric current through an electromagnet 2. After 5-20min, the powdery superconductive material S in the powdery raw material contained in the separating vessel 1 is floated, and the powder of other phase is precipitated. Then, a valve 4 is opened and the powder S is sucked in a duct 3 which serves as a transporting means, and separated from the coolant in a filter 5 serving as a recovering means, and recovered therein., and the coolant is filtered into a reservoir 6. |
