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04.02.2011

Switching from a wheel-mounted to a tracked crushing and screening system revolutionized The Dutra Group quarry and recycling operations

The new Powerscreen system includes an 1180 Premiertrak jaw crusher, two 1300 Maxtrak Automax® cone crushers, a Chieftain 2100X double-deck dry screen, a Chieftain 2100X triple-deck dry screen, and a track conveyor. The 1180 Premiertrak jaw is designed for high output in quarrying and recycling applications. It features excellent reduction, low fuel consumption, high mobility, plus simplified setup, operation and maintenance. The 1300 cone excels in production of sub-base and aggregates, with excellent cubicity, throughput and reduction ratios. The Chieftain 2100 is designed for large volumes of high specification products. The three-deck version has a patented hydraulically folding re-circulating conveyor, eliminating the need for a crane on site.

At the quarry, the jaw feeds the primary cone directly (all-in-feed), with no need for a screen plant in between. Material then goes to the two-deck screen, with oversize going on to the secondary cone under the reject side to be re-crushed and go back to the two-deck screen. The rest goes to the three-deck screen for distribution to four stockpiles: 3/4″, 1/2″, 3/8″ and quarry dust (3/16x0). 
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