Dewatering: Thickening, Filtering, CCD, Water Treatment & Tailings Disposal

Dewatering: Thickening, Filtering, CCD, Water Treatment & Tailings Disposal2017-04-04T06:57:46-04:00
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Filter Presses (2 replies)

Millza79
4 weeks ago
Millza79 4 weeks ago

To anyone with operational experience with filter presses,

If you get large throughputs of flotation concentrate to filter press (due to high head grades etc) than design or typical, how do you manage it?

Does the filter press become a bottleneck and hence the plant has to slow down to suit? 

 

SmartDog
4 weeks ago
SmartDog 4 weeks ago

Depends.  First off filter presses need a steady feed rate at a steady solids concentration, thus they need a surge system ahead of them.  This is usually a thickener followed by a feed tank.  Thickeners can take a fair amount of surge and then the feed tank can also even out some of the surge.  If the variation is beyond the capacity of these to handle it, then yes the plant (and maybe even the mine) will have to slow down.  

Also the mine engineers and geologists will be called into a meeting and heads will roll (eg fired).

Todd H
4 weeks ago
Todd H 4 weeks ago

Smartdog is right - thickeners and tanks can provide a good buffer, the other option is to increase throughput by raising the moisture content.  Sometimes allowing an extra percent or two of moisture can raise the throughput but it depends on the filter type - you can change the cycle time on a plate and frame or speed up a drum.

My experience has been that filters are often sized poorly!

Regards

Todd Harvey - Global Resource Engineering http://www.global-resource-eng.com

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