Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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EXPERIMENTAL STUDIES OF IMPACT FRACTURE OF POOR SULPHIDE ORE

Pankov S.A. 1 Afanasyev A.I. 1 Potapov V.Y. 1 Fefelov M.I. 1
1 Ural state Mining University
Mining of rich deposits of sulphide ores and involvement in the processing of poorer ores, resulting in increased unit costs of production of concentrates. The process of pre-concentration of the off-balance sulphide ore-proсessing is viewed in the paper. It is stated on the basis of experimental studies that poor electric treatment of sulphide ores can significantly reduce the amount of processing, to reduce energy destruction, increase the concentration of the mineral content. The fact of the dependency of the specific fracture energy on the energy of a single impact is stated. A criterion of estimating of the effectiveness of the impact mechanism is justified; it is equal to the ratio of the specific fracture energy to the degree of the crushing. It was found that the relative energy of destruction pieces of sulfide ores decreases while increasing size and energy of a single blow. The relatively large value of correlation ratio indicates a significant link between these parameters. It is shown that the electro processing of ores increases and small reduction major classes under impact crushing and accordingly increase the degree of opening of sulfide inclusions.