B - Operations – Transporting – 07 – C
Patent
B - Operations, Transporting
07
C
209/155
B07C 99/00 (2009.01) B03B 5/62 (2006.01)
Patent
CA 1163606
ABSTRACT A spiral separator for wet separation of minerals is described. The separator includes a vertical column around which extends a helix formed of many turns joined to the column. A trough or channel extends down the helix and at the top end this channel is relatively narrow and deep. This channel becomes pro- gressively wider and shallower. It is found that the rapid flow of the pulp into the deep and narrow channel ensures that the coarser and/or less dense particles such as asbestos or coal, is maintained in suspension without any tendency to stranding of the particles, and the gradual or progressive widening of the channel and decreasing of its depth, facilitates the finer and/or denser particles moving toward the inner part of channel after being initially evenly dispersed throughout the pulp. At the same time the coarser and/or less dense particles may be retain- ed in the outer part of channel. Some way down the channel the radial inner wall of the channel becomes a partition separating the channel from an inner helical trough. The partition has regular openings so that denser or finer minerals trav- eling close to the outside of the partition will pass into the inner trough.
374832
Clyde Industries Limited
Fetherstonhaugh & Co.
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