Derrick® Corporation announced today the introduction of its new 8-deck SuperStack® vibratory screening machine. The new screener offers 2-1/2 to 3 times the capacity of its precursor, the 5-deck Stack Sizer®. With its eight decks operating in parallel, combined with a 30 to 35 percent increase in effective screening width per deck, the SuperStack achieves significantly higher production capacity with only a modest increase in footprint. While the 5-deck Stack Sizer is equivalent to a 5 meter wide by 1.5 meter long screen, the 1.42 meter wide SuperStack is equivalent to an 11 meter wide by 1.5 meter long screen. All screen frames are coated with abrasion resistant urethane for extended service.
More effective use of screen area and increased capacity results from the front-to-back screen tensioning system that tensions the panel in the direction of flow rather than side to side. In addition to increasing productivity, the tensioning system reduces screen panel changing time by 80 to 90 percent compared to side-to-side tensioning. Derrick Polyweb® urethane screen panels with 150 or 180 micron slotted openings are available for the SuperStack. An optional repulp spray system introduces free water into replaceable rubber wash troughs to help undersize material pass through screen openings.
Dual oversize launders (one per side) and a single undersize launder eliminate the need for a large hopper, minimizing height requirements. Each feeder has an easily removed front cover to facilitate maintenance and debris removal. Custom designed inlet pipe configurations are available from Derrick if needed to meet equipment layout requirements. The Flo-Divider™, which equalizes flow from the feed source to each deck, is available in a number of discharge outlet configurations from 2-way to 16-way. Dual vibratory motors are positioned directly over the upper screen frame to deliver linear vibratory motion to all eight screen decks. The motors have an internal oil lubrication system that eliminates the need for a separate lubrication system, while providing long-term maintenance-free operation and low sound production.
“The SuperStack is a highly efficient means of achieving major production increases within a comparatively small footprint,” says Todd Burchett, Vice President – Mining and Industrial Division. He adds, “Consequently, we expect the SuperStack to fill the need for higher productivity in facilities where space is limited.” Mitch Derrick – CEO explains “This innovative solution offers over twice the capacity of traditional units in a similar footprint, significantly reducing both the upfront installation costs and ongoing operating and maintenance costs.”
Dan Cook of American Silica describes their experience with the Superstack, “We’ve seen a vast improvement in quality and efficiency.” Cook is especially pleased with the ease of changing the SuperStack screen panels. He says, “The front-to-back tensioning makes screen changes faster than the 5-deck.” Noting the productivity improvement, Cook comments that, “Plant capacity has increased by about 20 percent. We’ve gone from 700 tons per shift to 950 tons per shift! And we believe it can handle more than what it’s rated for. We’re really pleased with the 8-deck!” he concludes.
Derrick Corporation is a family-owned and operated company with a global presence focused on pioneering fine separation technology. Since 1951, Derrick has manufactured innovative technologies serving the Mining & Industrial, Oil & Gas Drilling, and Civil Construction industries. Derrick offers its clients leading-edge solutions and around-the-clock, award-winning service to maximize separation efficiency. Derrick’s products are renowned for their rugged reliability in industries known for intensely challenging environments and ever-evolving demands.