| 摘要 |
<p>In a method and apparatus for the recovery of a non-magnetic metal e.g. Ti which has particles of ferromagnetic cutting material entrained therewith, the mixture is comminuted, graded, degreased, dried and separated magnetically before being guided through an additional magnetic field constituted by magnets (31,32) whereby any residues of particles of ferromagnetic cutting material are magnetized. Then the magnetised residue runs through a testing system (20) which comprises magnetic probes (35,35') and responds to ferromagnetic particles passing through. The response of the testing system is used to govern the speed of the conveyor 18 and the position of the guide (38 Fig.3) in the grader 25. <IMAGE></p> |
