ORGANIZATIONAL-ECONOMIC MECHANISM FOR INCREASING OF THE EFFICIENCY OF RECYCLING SECONDARY TECHNOGENIC RESOURCES OF THE MINING-METALLURGICAL INDUSTRY
DOI:
https://doi.org/10.17159/Abstract
This study presents an improved methodology for assessing the economic feasibility and effectiveness of recycling of industrial waste. The methodology based on the breakeven control mechanism, but at the same time provides for the introduction of new evaluation criteria such as the threshold of condition and the degree of ore substitution. Based on an improved analysis, it becomes possible to more precisely prognosticate efficiency of recycling. Accordingly, a more refined determination of the lower limit of concentration of recoverable metals is carried out, at which technogenic waste can be assigned the status of secondary raw materials and processed into breakeven. This leads to a significant expansion of the secondary raw material base suitable for efficient recycling and, accordingly, increases the degree of repeated extraction of valuable metals. As an example, there is possibility of recycling of special or intermediate products of the Chiatura mining and dressing enterprise, manganese-containing dust from the production of ferrosilicomanganese, dehydrated sludge from the hydroseparation of slags and cake from the production of electrolytic manganese dioxide. The calculations provide for the production conditions of the Zestafoni Ferroalloy Plant, which is part of the holding Georgian Manganese LLC. It is shown that with a threshold of condition - Mn-24%, the highest recycling efficiency can be achieved in the production of low-phosphorus manganese slag and conversion ferrosilicomanganese through the combined use of the above waste and replacing grade III and IV manganese concentrates by 40-60%.
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