Rock Products

JUN 2019

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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Page 38 of 91 ROCKproducts • June 2019 • 37 vibrators operating at 3,600 rpm are available upon request. • Rotary Tensioning System – Unique rotary tensioning system provides the quickest screen media changes in the market, up to 50% faster than com- petitive models. Easy replacement of each screen section translates into less downtime for screen changes and increased operation time. • Low Maintenance – The high fre- quency screen induces vibration directly into the screen media, lead- ing to reduced maintenance and increased production and uptime. Vari Vibe Series screens are ideal for post-screening applications and offer high frequency vibrations on all decks. These screens achieve the highest screen capacity in the market for fines removal, chip sizing, dry manufactured sand and more. • Duo Vibe Series – Ideal for pre-screen- ing applications by offering a scalper top deck with conventional frequency mounted over high frequency bottom decks. This configuration improves production needs earlier in the cir- cuit by removing fines from coarser materials. • Hydraulic Screen Angle Adjustment – Makes adjustments quick and easy, reducing downtime. KPI-JCI, Major FLEX-MAT, Major's line of high-vibra- tion wire screens is the world's most advanced screening media, according to the company and is available in ten- sioned and modular applications. FLEX-MAT screen technology allows wires, bonded to lime-green polyure- thane strips, to vibrate independently from hook to hook for faster material stratification. FLEX-MAT high-vibration wire screens are available in a side-tensioned or end-tensioned configuration. Major's dedication to providing the best service and value to customers draws its strength from its network of certi- fied dealers and their screening experts who are trained to provide local com- plimentary services, such as Screening Performance Assessments (SPA) and Screen Maintenance Seminars (SMS). Major, McLanahan Corp. McLanahan Corp.'s H-Series MAX tri- ple-shaft horizontal screen offers the latest in screen technology. It can be used in both portable or fixed plant applications. Horizontal screens pro- vide high G-forces to vibrate and move material down the length of the screen. A primary feature of the H-Series MAX Screen is its aggressive action in appli- cations where blinding or plugging of the screen media openings can occur. The horizontal screen provides produc- ers with unmatched performance and cost-saving features. The H-Series MAX screen features fully adjustable oval stroke technology to create advantages that will positively impact profitability. McLanahan's H-Series MAX horizontal screens are designed to match the level of durability required for the mining and aggregate industries. Weld-free, high-strength steel side plates, lami- nated in all high-stress areas, coupled with reinforced deck frames combine to create a screen basket assembly with significant strength and durability. Reinforcing straps provide added side plate strength for side-tensioning media. The drive guard and snubbers are strategically designed and located for improved access to tension bolts. The triple-shaft mechanism allows for the flow-through lubrication common to oval stroke vibrators, but also fea- tures a unique means to retain oil in the bearings at shutdown (patent pending). There are no dry bearing start-ups that drive the life out of bearings, particu- larly in harsh weather. The H-Series MAX triple-shaft screens can match the footprint of many screens on the market today, allowing for easy retrofitting on existing plants. Compared to linear stroke screens, the oval stroke with the elliptical charac- teristic offers unmatched efficiency by maintaining open areas and the ability to fine-tune the screen to better suit the application. Horizontal screens, with triple-shaft mechanisms, typically offer better efficiency and more accurate particle sizing compared to inclined screens because the material is retained on the screen longer, with a slower travel rate to the end of the screen. This allows more properly sized material to fall through the screen openings. In a stationary plant setup, horizontal screens are more often seen as tertiary and/or finishing screens. Horizontal screens are also popular on portable plants because of their low profile.

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