Design and operating performance of a long-distance belt conveyor system with horizontal curves and simultaneous material transport in the upper and lower strands, Part 2

After five years of consistently satisfactory operational experience, the m aterial handling capacity of a 4 200 m long belt conveyor system connecting a cement plant of the HALLA Cement Manufacturing Corp. to a port terminal in Okke near Kangnung in South Korea was increased to a total of 1 675 t/h at the end of 1997. Material is conveyed on both the lower strand and the u pper strand. The conveyor run has vertical curves and also six horizontal c arves to adapt to the difficult topography. This avoided the need to instal l several belt conveyors with transfer points. The system is state-of-the-a rt as regards routing, drive technology and construction. A detailed descri ption is given of the design of the horizontal curves based enforce-depende nt belt guide measures, and of the theoretical principles used to specify t he drive system as regards optimum configuration of the non-steady operatin g conditions. The paper considers the operating behaviour that was measured during initial commissioning and expansion of capacity which is highly con sistent with the theoretical specification. The belt conveyor system at HAL LA Cement demonstrates that reliable simultaneous material transport with h orizontal and vertical curves over large distances can be achieved even und er the harsh conditions of continuous multiple-shift operation.