Derrick Separation Technology
Silica Sand - Replacement of Two Hydraulic Classifiers
• Classification efficiency improved from 70% to over 90%, increasing product recovery
• 87% reduction in process water, decreasing operating costs
• Accurate control of final product particle size
Replacement of two large hydraulic classifiers with two five-deck Stack Sizers making a 0.5 mm separation on 240 MTPH.
![](https://mininglifeonline.net/images/upload/2015/05/19/svC4O4z_f3ccdd27d2000e3f9255a7e3e2c48800.jpg)
Two Five-Deck Stack Sizers
![](https://mininglifeonline.net/images/upload/2015/05/19/lXlbazP_156005c5baf40ff51a327f1c34f2975b.jpg)
Urethane Screens making a 0.5 mm separation
Source: http://www.derrick.com/webmodules/catCatalog/dtl_Product.aspx?ID=63
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