THE METHODS OF ECONOMIC EVALUATION OF TECHNOLOGY ORE MINING

Abstract

Article describes the main results of a research of economic parameters of development of balance stocks of ore fields in the underground way. At the choice of technology of development of such fields already at a design stage the objective assessment of processes which will be used at working off of reserves of ore, by uniform criterion in the form of conditional profit is important. When comparing systems of development correct comparability of whenever possible bigger quantity of natural and technogenic factors is provided. Feature of approach consists that the value of 1 t of the extracted balance ore is defined with transportation, enrichment and metallurgical processing, damage from losses of balance ore and from processing of the impoverishing weight. So, use of system of development with the increased losses of ore is expedient if the damage from additional losses is compensated by economy of expenses at production, decrease in damage from impoverishment and increase in value of the extracted ore, for example, due to increase in an exit of machine classes. For comparability of results of calculations it is accepted that at the compared options during the set time the same quantity of balance reserves of ore with the set content of metal in her irrespective of a ratio of systems of development is repaid. Losses, impoverishment and labor productivity in concrete conditions are connected correct equivalent by economic ratios which are the basis for purpose of parameters of working off of stocks. The described technique allows to correct development parameters, since a design stage.

Keywords

• economic parameters
• development
• field
• efficiency assessment
• profit
• quality of ores
• value
• enrichment
• metallurgical repartition