Results Pilot Plant Figure 4 pilot plant results Results from the trial (Table 1) indicated over 90% recovery of material fed to the screen with a 65% reduction in slimes. Results of the water permeability tests, gave an improvement in the time of 60-minute transit in the flow of existing sands to 20 minutes in the flow of clean sands. These results indicate the increasing in three times the permeability of sands. Table 1: Water transit time in different campaigns Figure 5 PSD mass balance Campaign Before min After min Permeability Ratio Test N°1 60 20 3.1 Test N°2 50 15 3.3 Test N°3 86 20 4.3 0 20 40 60 80 100 10 100 1000 % Passing Cumulative Particle Size, microns PSD in different stages of Process UF Cyclowash Feed DWScreen Oversize Undersize
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