search.noResults

search.searching

dataCollection.invalidEmail
note.createNoteMessage

search.noResults

search.searching

orderForm.title

orderForm.productCode
orderForm.description
orderForm.quantity
orderForm.itemPrice
orderForm.price
orderForm.totalPrice
orderForm.deliveryDetails.billingAddress
orderForm.deliveryDetails.deliveryAddress
orderForm.noItems
SPECIALIST EQUIPMENT


Don’t underestimate D


ramatic reductions in energy use and environmental impact can be achieved with sandwich belt high-angle conveyors that serve as the vital link in


any in-pit crushing and conveying (IPCC) system. T ese high-angle conveyors are not new, yet have not found wide use in IPCC systems where they can realise the greatest advantage. Reduced energy consumption and


environmental impact with IPCC systems were already realised in the 1970s. With the bulk material haulage limited to conventional open trough conveyors the most direct path out of the open pit was precluded, requiring low-angle spiral ramps and/or deep slots and/or tunnels through the high wall of the open pit. T ese excavations, to accommodate the low-angle limitations, represented undesirable impact on cost and on the environment. Against this backdrop a major study in 1979 sought to develop high-angle conveying systems that could continuously haul the mined bulk material directly out of the pit, along the high wall – the shortest distance between the two end points.


Development of sandwich belt high-angle conveyors Between 1979 and 1981 that study developed sandwich belt high-angle conveying systems that used all conventional conveyor equipment including smooth surfaced rubber belts that could be continuously scraped clean.


36 www.engineerlive.com


T ese systems had all of the positive features of conventional conveyors but overcame the angle limitation. By hugging the bulk material between two belts, the material’s internal friction could be developed to facilitate conveying at any high angle up to 90° (vertical). After an intense testing period


DSI Sandwich high- angle conveyor elevates 720 t/h of limestone, iron ore, sand and clay at a 60° angle at a cement plant in Brazil


HIGH ANGLE CONVEYING


Joe Dos Santos reminds IPCC owners and operators of the cost savings they are missing by ignoring high angle conveying


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52