In modern conditions of production due to the technological features of mining-metallurgical complex is deficient mineral adequate quality. Special attention must be given to the impact of mines on the environment. The introduction of pre-enrichment on an industrial scale will solve the problem involved in the development of the poor and discarded ore and significantly reduce the negative impact on the environment by reducing the amount of deep concentration of rock up to 70 %.
Evaluating the effectiveness of pre-enrichment of ore should be considered not only the economic aspects of the investment attractiveness of deposits in connection with the revision of Conditions by the producing raw materials, but also taking into account the prevention of envi-ronmental damage.
