Grinding & Classification Circuits

Grinding & Classification Circuits

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Recently put inserts to reduce wear in cyclone inlet but have found re-circulating load increasing a ... (2 replies)

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Chama Kapambwe
6 years ago
Chama Kapambwe 6 years ago

Recently put inserts to reduce wear in cyclone inlet but have found re-circulating load increasing as we are now failing to operate on 5 cyclones but 6 due to high pressure. Noticed high pebble generation as well. could that be as a result of high recirculating load?

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TonyE
6 years ago
TonyE 6 years ago
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By adding the additional cyclone to reduce overall pressure,the overall system head has been reduced. The flow rate to the cluster will increase and hence the circulating load if the density to the cluster is being controlled. The effect is to reduce the residence time of the feed through the mill resulting in an increase in pebble production. How has the overall grind been affected? Do you have any data? 

Mike
6 years ago
Mike 6 years ago
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The cut point of the cyclone is also determined by the cyclone dimensions and the feed pressure.  Adding the inserts which caused the increase in pressure also shifted the classification cut point causing a change in production.

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