Extraction of metals from low-grade raw materials and ore processing tailings with process activation by combining chemical and mechanical energy

Abstract

The relevance of the research is explained by the need to find innovative ways to extract metals from low-grade raw materials and tailings of ore processing tailings, including activation of metal extraction processes by combining chemical and mechanical energy. Methods. The methodology for achieving this aim makes it possible to assess the possibilities of deep processing in the conditions of mining enterprises of various industries and determine the ecological and economic effect of the implementation of new technologies. Results. The concept of deep processing of substandard mineral raw materials has been formulated, which simultaneously solves both environmental and economic problems of field development. A mathematical model of the process of extracting metals from substandard ores and enrichment tailings with an increase in their technological properties by activation in a disintegrator is proposed. An integrated economic and mathematical model of the process and calculation of the economic effect of options for involving substandard mineral raw materials in production are proposed. It has been experimentally confirmed that the intensification of metal leaching processes is achieved by using the capabilities of the disintegrator. It is shown that a decrease in the content of metals with an increase in the depth of work will increase the cost of commodity products. It is determined that a promising direction for the extraction of metals from substandard raw materials is combined chemical enrichment and mechanical activation in the operating device of the disintegrator. Leaching in the disintegrator significantly increases the recovery of metals into solution and opens up the possibility of waste-free metal production with repeated processing of raw materials. Methods for extracting metals by leaching substandard raw materials are being developed at a number of mining enterprises. The concept of deep processing of substandard mineral raw materials is realized through the use of mathematical models and a software package.