B - Operations – Transporting – 03 – D
Patent
B - Operations, Transporting
03
D
B03D 1/02 (2006.01) B03B 13/00 (2006.01) B03D 1/14 (2006.01)
Patent
CA 2101710
ABSTRACT OF THE DISCLOSURE The invention is directed to a method of regulating an inflow quantity of suspension flow to a flotation system dependent on production demands, including the steps of determining a back-up level of the froth in a froth chute of a primary flotation stage; dependent on the backup level, adjusting an overflow level of suspension flow to the froth chute in the primary flotation stage; dependent on the back-up level, controlling the suspension flow in the primary flotation stage to provid a substantially constant back-up level of the froth in the froth chute of the primary flotation stage; transporting de-aereated froth from the primary flotation stage to a collection vessel which is in fluid communication the secondary flotation stage; recycling suspension flow from the secondary flotation cells of the secondary flotation stage in part to an inlet of the primary flotation stage, and in part to an inlet of the secondary flotation stage; regulating the level of de-aereated froth in the collection vessel by controlling the amount of suspension flow recycled from said secondary flotation stage to the inlet of the secondary flotation stage; and regulating the ratio of the amount of said suspension flow from the secondary flotation cells which is transported to the inlet of the primary flotation stage relative to the amount of said suspension flow which is transported to the inlet of the secondary flotation stage, dependent on the height of froth in the froth chute of the second- ary flotation stage.
Dorflinger Hans-Dieter
Schweiss Peter
Gowling Lafleur Henderson Llp
J. M. Voith G.m.b.h.
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