Page 34 - Hub-4 Magazine Issue 63
P. 34

  Washing & Screening
The Processing Plant:
As well as supplying the wash plant and MS water treatment system PowerX also installed a 400m long feed conveyor including a feed hopper situated adjacent to the current dig. Here material is loaded into the hopper and is conveyed to a hopper fed radial conveyor next to the processing plant. From this, the material is either fed direct to the main plant or stockpiled adjacent to it.
With the plant operating at 200tph material is fed via a hopper to the inclined primary conveyor and then onto a Terex Washing Systems 4.9 x 1.5m triple-deck rinsing screen. Here the rinsed fractions of 10mm/20mm/+20mm are split and sent to radial stockpilers.
  Twin sands production:
The soft sand production is dealt with by an AMP compact soft sand plant which consists of a high-energy 2.4m x 1.2m dewatering screen and one 150/100 centrifugal pump and is completed by four 250mm polyurethane cyclones to reclaim the material above 20μm.
Arranged in a cluster with equal feed, each cyclone has a knife valve with chutes and rubber lined distributor
box. Both sand plants are of modular
design to allow complete
flexibility.
Both sands are then delivered to their respective stockpile by radial conveyors.
The main product, sand then falls through the bottom deck of the rinsing screen and is then pumped up to the single hydro- cyclone of the AMP compact sharp sand plant. Silt from the thickener is also delivered and measured back into the feed of both the sharp and soft sand processes consistently maintaining the concrete specification.
Consisting of a high-energy 2.4m x 1.2m dewatering screen and one 200/150 centrifugal pump for sharp sand,
the plant specification is completed with one
625mm diameter conical bottom hydro-cyclone
hydro vortex.
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www.hub-4.com July/August 2020 - Issue 63
    
















































































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