Abstract
The paper considers the issues of reducing the energy intensity of transportation at opencast mining enterprises, the relevance of which has now increased due to the rise in the cost of fuel and energy resources. It presents the study results concerning the cost structure of the electricity consumed by electric mine transport, which form the basis for the development of technical and operational measures to reduce the energy intensity of the transportation process. It is shown that the work to reduce the electricity consumption for mined rock transportation should be aimed at: Reduction of losses in the power circuits of the traction rolling stock due to the use of more advanced electric rolling stock and regulation of the degree of utilization of the installed traction power; Introduction of new contact materials for electrical circuits with the lowest possible resistivity, including for current collector plates; Introduction of measures to reduce energy consumption for power supply of auxiliary circuits; Development and implementation of rational train control techniques. The introduction of energy-saving measures should include the development and application of effective methods for calculating individual norms of energy consumption and incentives for energy saving of the employees involved in the organization of the transportation process.
Highlights
IntroductionFor iron-ore mining plant, the total mine (i.e., taking into account all types of work) specific energy consumption in some cases reaches 50 kWh per 1 ton of mined ore
Opencast mining enterprises are large consumers of electrical energy
The energy intensity of mine electric transport is determined by a significant number of factors [19, 20, 21]
Summary
For iron-ore mining plant, the total mine (i.e., taking into account all types of work) specific energy consumption in some cases reaches 50 kWh per 1 ton of mined ore. It is determined by the energy consumption of the entire complex of equipment that provides the technological process of production, and of all auxiliary workshops. It follows from the above that the development of mining enterprises that use electric traction in open-cast work will be accompanied by the increase in the transport component in transportation energy intensity. The purpose of the article is to analyse the reserves for reducing the energy intensity of rail transportation at mining enterprises that use electric traction during openpit mining
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