Patent ID: 6634832
Filing Date: 2003-10-21
Classification: B65G,E21C,E21F

Abstract:
Apparatus adapted for transporting particulate materials in batches from a lower level to a higher level, comprising:a flow loop comprising a closeable chamber for receiving batches of the particulate materials, a first flow conduit extending upwardly from the chamber to a delivery level, a second flow conduit extending upwardly from the chamber to a header tank located at a higher level than said delivery level, and valve means at the chamber for selectively isolating the chamber from the first and second flow conduits; means for filling the header tank and the flow loop with a pseudoplastic flotation fluid; means for introducing a batch of the particulate materials into the chamber and means for closing the chamber; and means for separating the particulate material from the fluid discharged at the delivery level and means for returning the fluid to the header tank.