Abstract
The economic efficiency of the enterprise and the length of its operation, the full utilization of mineral reserves and the total cost of operation depend on the selected depth and boundaries of opencast mining. In such conditions of the deposits’ development it is necessary to evaluate the capabilities of the raw material base for the further development of the mining enterprise. The basis for determining of the border overburden ratio is on the condition that the price of manufactured marketable output of the designed enterprise should not exceed the price of the same marketable output in the world market. The realization of this condition is achieved analytically. This takes into account the impact of the rate of return on the final depth of the designed open pit. A new method of determining of the border overburden ratio is developed, which ensures the competitiveness of iron ore concentrate in the world market. The value of the border overburden ratio is developed for the Pershotravnevij open pit of the Northern mining and processing plant, depending on the situation of the iron-containing products’ prices, which ensures the competitiveness of marketable iron-ore output in the domestic and world markets.
Highlights
IntroductionThe economic efficiency of the enterprise and the operation period, the full utilization of mineral reserves and the total cost of operation depend on the selected depth and boundaries of the opencast mining
The economic efficiency of the enterprise and the operation period, the full utilization of mineral reserves and the total cost of operation depend on the selected depth and boundaries of the opencast mining.Nowadays, in the development of steeply falling iron ore deposits, their working contours on the surface have reached design marks on the most open pits
The goal was to develop a method of determining the cut off overburden ratio, which will allow while the formation of the price for iron ore products on the world market to determine the boundaries of the open pit, that ensures the competitiveness of mining and processing plant
Summary
The economic efficiency of the enterprise and the operation period, the full utilization of mineral reserves and the total cost of operation depend on the selected depth and boundaries of the opencast mining. When choosing opencast mining alternatives, their main parameters – open pit boundaries, mining mode and ore productivity – are assessed by economic indicators. These indicators are: profit from sales of saleable output; production costs of the saleable output; profitability, etc. The development in the approved by existing designs boundaries can lead to the rapid depreciation of the loading faces of the open pits on the final designed boundaries in the near future This will entail a significant increase in the cost of the opencast mining due to the reactivation of non-working faces, if the open-pit boundary will be redefined in future. The main condition for a comparative assessment of the operational efficiency of mining and processing plant in the world market is to compare the price of marketable products with the price of the same marketable products in the world market
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