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34 • ROCK products • May 2016 www.rockproducts.com Sturtevant Introduces Mobile Classifying Plant Sturtevant Inc. introduced what it is calling the world's only self-contained, 100-percent-mobile air classifying plant with integral collapsible convey- ors, enabling parking to processing in one hour or less. The Whirlwind air classifier and con- veyors hydraulically unfold for set- up and fold away for breakdown and transport, with no cranes, boom trucks, front-end loaders or special crew need- ed for any part of the operation. Simply push a button. D u a l hyd ra u l i c c yl i n d e r s p rov i d e smooth, steady raising and lowering of the Whirlwind air classifier and the integral, collapsible feed and dual dis- charge conveyors. The plant is mounted on a rugged chas- sis frame with tri-axle suspension for stable travel on highways or back roads. The plant is designed and constructed for vibration-free operation and long service life with low maintenance. The compact design features a low transport height (13-ft., 5-in.), short trailer transport length (61-ft., 9-in.) and trim transport width (12-ft., 7-in.) for easy maneuvering on roadways and at job sites. Feed capacity is 30 to 90 tph with a 50-hp variable-frequency motor for low energy consumption. Sturtevant estimated transportation costs at 40- to 50-percent lower than if they had designed a larger plant with unattached conveyors requiring assembly. Other features include a long, high main discharge conveyor for greater stockpile heights and a low feed con- veyor intake hopper that can be fed by a front-end loader. The feed hopper is located behind the trailer rear wheels to prevent spillage of feed material onto the chassis. The smaller side con- veyor is for byproduct fines. For safety and nuisance dust control, all three-belt conveyors are covered and can be easily vented. The conveyor cov- ers also help reduce moisture during rain to ensure efficient performance. The air classifier is designed for dry operation. Material moisture prefer- ably should not exceed 2 to 3 percent, with 4 to 5 percent as maximum for most materials. Sturtevant, www.sturtevantinc.com Superior Industries Inc. developed new technology that speeds one of the most time-consuming steps in portable plant installation. Known as Level Assist, the new option automatically levels a plant once the machinery is raised to a desired height. Historically, owners and operators tediously adjusted crib- bing and jacks until a leveled plant was achieved. When oper- ating in an uneven environment, it's common for plants to cre- ate out of spec material, overstress bearings and gears, reduce production rates and increase vibration and parts' wear. This new feature, said Superior engineers, greatly speeds the process. Once the plant is in its operating location, the operator hydraulically lifts the machinery to a desired height then engages the Level Assist by switching the con- trol panel from manual to auto mode. The new technol- ogy reduces labor force required for setup from two or more to one, resulting in thousands of dollars in savings if a plant is relocated or when simple readjusting is required. Superior's new Level Assist technology is an available option for new or can be retrofitted to existing portable crushing, screening and washing plants. Superior Industries, www.superior-ind.com New Technology from Superior Produces Fastest Portable Plant Setup Time PORTABLE PLANTS