Designing modern Russian crushing and transfer units for conveyor ore transportation systems

Abstract

The article discusses methodological aspects of designing semi-stationary and mobile crushing and transfer units (DPU) carried out by the experts of Uralmashzavod PJSC and IGD Ural Branch of the Russian Academy of Sciences on behalf of the Russian Metalloinvest company during the development of the Russian DPU-7200 model. As the result of the R&D work performed, a DPU was manufactured and installed at a mining operation as part of the in-pit crushing and conveyor (IPCC) systems, which is intended for conveyor transportation of ore from the open pit. A distinctive feature of the discussed DPU is that it is made as a complete system with the supporting steel structures integrated in its design, which makes it possible to relocate it during the service life when expanding the IPCC. The issues concerned with justifying the DPU layout, parameters of the receiving and unloading hoppers are discussed with account of structural, strength, mining and technological factors. The paper presents the technical characteristics of the developed DPU, as well as the design features of the primary equipment. The impact of the related technological factors, i.e. irregular character of dump truck traffic, the technological and temporal modes of the IPCC operation in general and those of the DPU in particular, the designed schedule of maintenance and repair, etc., is shown.