May 8, 2011
Material on the Move
From stockpiling to loadout, conveyors help keep materials moving smoothly throughout an aggregate operation.
By Kerry Clines, Senior Editor
To create conveying efficiencies,start with a good plant design and quality belt material.
Metso offers a wide range of conveyor belting with high-tensile strength, good flexibility, and resistance to edge wear. Its molded-edge belt construction with rubber belt cover protects the fabric from moisture, dirt, rock, and other foreign material. Each belt is manufactured to a specific width, making it easier to train and track.
Overland conveyors can move materials easily from one point to another in the pit and in the processing plant.
Excel says its overland conveyors feature a heavy-duty design and quality components built to outlast and outperform the competition. Sizes range from 50 to 500 feet and beyond, based on customer needs.
Telescoping conveyors give an operation increased flexibility when it comes to stockpiling capabilities.
Masaba says its Magnum telescoping conveyor can help operations avoid costly material segregation issues. According to the company, the stinger’s track technology provides constant positive traction and smooth operation. Features include hassle-free, quick set up from road travel to operation mode; variable-speed power travel; and a swing axle design that the company says is the widest, most stable footprint available. PLC operation is simple with four functional programs, a large color touch screen, and NEMA class components.
Superior says its TeleStacker conveyor can build radial windrow, radial conical, inline windrow, or inline conical stockpiles as large as 275,000 tons when equipped with the company’s PilePro Automation package. Featuring an easy-to-use touch screen, the system can recall up to four previous pile projects, includes an optional remote, and can be upgraded onsite.
Whether stationary or portable, radial or fixed, stacking conveyors help place materials into functional stockpiles.
TCI Manufacturing says its pedestal stacker/cantilever conveyor has the ability to make tighter stockpiles. The space-saving unit is capable of rotating 270 degrees. It features a heavy-duty truss design and a wrap drive with manual take up. The undercarriage is a fixed-height cantilever, dual-axle assembly with eight 11 x 22.5 tires with dual 3-horsepower power-drive assemblies.
Grasan’s stationary truss and channel frame conveyors come in 24- to 60-inch belt widths and lengths from 25 to 500 feet, complete with engineered drives and a variety of options such as walkways, covers, support legs, etc. The standard truss main frames are 36 inches deep and all jig welded. Truss sections are through-bolted for extra strength. For long spans between supports, 48- or 60-inch-deep trusses with extra-heavy chord angles are available.
ABC’s “fishbelly” conveyor is custom engineered to meet specific customer requirements and comes standard with class II drives, mine-duty pulleys, self-aligning roller bearings, and three-ply belting. The company also supplies structures, bins, hoppers, and custom batching systems.
Sandvik’s HC Series line of conveyors is available in several belt widths from 20 to 63 inches, with production capacities of 100 to 1,500 tons per hour. The conveyors are available with Sandvik’s HX410 ionization-based dust suppression system (inset), which the company says operates with less maintenance and power requirements than fan/filtration systems.
Eagle Crusher says its 30- by 50-foot portable radial stacker is designed for high-volume production and years of trouble-free service. It features a 24-inch-deep truss frame, rigid axle with manual swivel wheels and 10:00 x 20 12-ply tires; manual raise and lower; gathering hopper; pintle hook; and a 15-horsepower, 1,800-revolution-per-minute TEFC electric-motor drive pre-wired with a 150-foot cable from the tail.
Transfer conveyors can help shuttle material from bin to truck or railcar, or vice versa.
KPI-JCI says its new 48-inch Low-Profile, Drive-Over Truck Unloader reduces set-up time and labor requirements. The conveyor’s low, 3-foot profile and compact design make it easy to move to multiple locations on a given site and eliminates the time spent unloading machinery to and from a trailer.
Chain drag conveyors are a bit unusual, but can help an operation keep dust and material discharge to a minimum.
SpiroFlow Systems’ range of DynaFlow tubular chain drag conveyors operate within the confines of a pipe, moving material with heavy-duty discs connected by articulated metal links (chains). The conveyors provide totally enclosed, dust-free material handling. The unit handles hot, cold, wet, dry, or temperature-sensitive materials and may be fed or discharged at multiple points in a circuit.