Screens on the move
Portable screens allow more flexibility and versatility in an aggregate operation
By Kerry Clines, Senior Editor
Tracked screens are equipped to follow the deposit around a quarry, shortening haul truck cycle times, or doing away with them completely.
Metso’s Lokotrack ST272 is capable of producing three end products simultaneously and accepts feed material of up to 2 feet in size. The scalping screen accepts a wide range of screen media. The IC300 intelligent controller provides user-friendly operation and fully automated control of all functions.
Kleemann’s Mobiscreen plants produce multiple aggregate sizes with fixed or swiveling discharge belts and tailored screening surfaces that range from 8.4 square yards to 22 square yards. The units are available in double- or triple-deck designs, with or without a feed hopper, as a banana screen, and other configurations.
Sandvik’s QA450 offers a triple-deck screen box and an extra side conveyor that enables it to produce up to a total of five product materials. It incorporates a large feed hopper, a pair of large screen boxes, and extended conveyors with large stockpiling capabilities.
Road-portable screens offer even more versatility with the ability to not only move around the quarry, but to move from one quarry to another.
The Terex Simplicity TXW616T features a 6- by 16-foot, triple-deck inclined screen. Twin 36-inch by 25-foot dewatering screws maximize screen capacity. An I-beam main frame with two manual landing jacks and four cribbing legs provide stable operation and mobility. Walkways around three sides allow easy access to the machine.
GreyStone’s self-erecting screen tower is a horizontal, vibrating, three-deck wet screen that raises and lowers with the push of a button, taking less than two days to tear down and set up. It can act as a primary screen for 6-inch minus material or a secondary or tertiary screen for larger material and can stockpile up to three material sizes simultaneously.
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