| 摘要 |
<p>This invention relates to the recovery of tin as tin metal from tin plate scrap on a continuous basis comprising continuously advancing shredded scrap through an electrically anodic perforated drum rotatable about a horizontal axis and partially but not completely immersed in a caustic solution in the absence of oxidizing agents, plating the tin content of said tin plate scrap upon cathodes disposed obversely and externally to said electrically anodic rotating drum arranged in a longitudinal row on the inside wall of a tank containing said caustic solution. The inventive apparatus comprises said perforated drum having an opening at one end for receiving material, contact means for rendering said drum anodic, a central cylinder inside said drum, drive means for revolving said drum, helical means interposed between said drum and said cylinder, said helical means dividing the annular zone between said drum and said cylinder into a plurality of flights, each accommodating a quantity of scrap, said helical means being arranged to advance said scrap from the intake end of said drum to the discharge end thereof, a detinning tank for caustic solution in which said drum is partially submerged, a plurality of cathode plates obversely and externally to said electrically anodic rotating drum arranged in a longitudinal row on the inside wall of said tank containing said caustic solution.</p> |
