Cost-efficient and Application-oriented Design of Steel Cord Conveyor Belts for the Mining Industry
Conveyor belts in the mining industry are facing ever higher demands as regards conveying capacity, conveyor length, service life and energy efficiency. In addition to designs according to various general standards manufacturers further develop their products for better economy.
Dr. Andrey Minkin
(ed. WoMaMarcel - 23/4/2015)
For the new product Stahlcord Barrier the Type 2 steel cord transverse reinforcement was selected. Before approval of the product, it was also necessary to precisely test, in addition to the impact strength, the troughing according to ISO 703 and to Conti procedures, and ply adhesion of cover/transverse reinforcement and transverse reinforcement/bead core according to DIN EN 28094 on the 3D-test rig.
The advantages of the new product can be briefly summarized as follows:
Two to three times more resistance to penetration damage. No belt rips possible in the steel cord transverse reinforcement area.
Excellent troughability according to DIN ISO 703 and CONTI procedures (idler set test rig).
High ply adhesion in accordance with ISO 15236 and CONTI procedures („3D“-test rig).
Slight increase in the belt weight per meter of 5% compared to a steel cord conveyor belt without transverse reinforcement.
Long service live time –> safer and more reliable operation of heavy-duty conveyor belts.
Therefore, Stahlcord Barrier is an ideal solution for belts used in heavy mining machinery or in short- and middle-distance belt conveyors in surface mining areas close to heavy mining machinery and for transporting sharp-edged and coarse-grained bulk materials at several feeding and transfer points.
With increasing globalization, mining companies are also finding themselves under strong cost pressure. The investment plans in the mining industry are being adapted to the raw material market situation and were significantly reduced in many mining companies in 2014, for example, due to a lower world coal price. Therefore, it is essential for the survival of suppliers to the mining industry in particular to design their products in a cost-efficient and application-oriented manner without losing long service lives and proven quality characteristics of the product in the process.
On the other hand, a mining company can complete new projects through savings in terms of procurement and operating costs. Of course, environmental aspects are a point of focus both for suppliers in the mining industry and also for mining companies, not just because of the increased environmental requirements of the states but also by virtue of environment-oriented thinking, which has become corporate policy in many companies for some time now.
DIN 22101: Continuous Conveyors – Belt Conveyors for Bulk Material – Principles for Calculation and Design; 1982, revised 2011
DIN 22131: Steel Cord Conveyor Belts for General Conveyor Technology; 1988
ISO 15236 parts 1 to 4: Steel Cord Conveyor Belts, 2006
Australian Standard AS1333: Conveyor Belting of Elastomeric and Steel Cord Construction; Amdt 1-2000/1994
Hintz, A.: Effect of Belt Design on the Energy Consumption of Belt Conveyor Systems; dissertation University of Hannover, 1993
Wennekamp, T.: Tribological and Rheological Properties of Conveyor Belts; dissertation, Leibniz University of Hannover 2008
Keller, M: Installation of a Conveyor Belt for Hard Coal Shipments with Optimized Energy Consumption in Kalimantan. Surface Mining 55 (2003) No. 2. pp. 177-184.