Substantiating a technique to process hard rock involving extraction of valuable components and use of wastes to form mesorelief

Abstract

A technique to process rock mass from hard-rock technogenic media has been developed; it is aimed at recovery of mineral losses, restoration of the environment at the territory of mining enterprises by means of rock mass extraction, its processing and redistribution for the purposes of land recultivation and landscape restoration. Classification of dry ore-containing hard rocks of dumps has been developed; that has made it possible to improve technological scheme of the processing of rock mass from technogenic media, emphasize its variants of use, and specify the required facilities and their productivity. Scientific value of the paper is in determining the effect of changes in the losses in pre-processing dry wastes upon the yield of industrial product and wastes; the effect has demonstrated that the yield of industrial product is in polynomial dependence upon the pre-processing losses while yield of tailings is in the power dependence. Practical implications of the paper are in the fact that the proposed method helps form mesorelief with the properties close to the natural one. The method involves restoration of the initial landscape with the help of opening hard rocks followed, completed by laying water-bearing and potentially fertile layers.

Prediction of the mineral components spatial distribution in tailings ferruginous quartzite enrichments

“…The process of developing a man-made object, extracting lost useful components and using waste to restore the meso-relief is disclosed in [11]. Similar studies were carried out by the authors [12,13].…”

Prompt determination of predictive parameters for mining-technogenic landscape objects

“…The upper earth crust layer suffers the greatest damage, since millions of cubic meters of minerals and waste rocks are removed from the depths by underground and surface methods, disturbing the natural balance and hydrogeological regimes of ground and surface waters [4,5]. Accumulated large-tonnage industrial waste, being an integral part of mining and processing processes, can contaminate soils and groundwater, posing a threat to natural ecosystems and public health [6][7][8][9].…”

Enhancing the adaptability of a mining complex in a dynamic environment by utilizing the technology for the development of a man-made deposit with a mobile ore preparation complex

“…This makes the technology of gross extraction of the rock mass from the pile impractical in solving this problem. It is also not considered possible to ensure the selective extraction of exclusively useful minerals, since the mineral and petrographic features of the man-made deposit during the years of being in the open environment were subjected to physical and chemical processes of migration of useful components [15][16][17]. Thus, in the regions where mining complexes operate, most of the man-made mineral raw materials are placed unsystematically.…”