Перегляд по темі "granulometric composition"
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Determination of granulometric composition of technogenic raw materials for producing composite fuel
(Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 2022-08)Ukraine’s energy sector needs commercial coal from 19 to 21 million tons annually. At the same time, in 2020, coal production amounted to 28.82 million tons. This is less than in 2019 by 2,406.3 thousand tons or 7.7 %. The ... -
Granulometric composition research of mine rocks as a material for backfilling the mined-out area in coal mines
(Dnipro University of Technology, 2021-12-30)Purpose. Determination of the granulometric characteristics and loosening coefficient of mine rocks formed during stope operations from undercutting the bottom rocks as a potential backfill material based on a set of mine ... -
Mathematical model to optimize drilling-and-blasting operations in the process of open-pit hard rock mining
(Dnipro University of Technology, 2021-06-30)Purpose is to determine a function of the reduced expenditures connected with drilling-and-blasting operations, loading and hauling operations, and rock fragmentation depending upon the cost of machine-shift of the applied ... -
Scaled-up laboratory research into dry magnetic separation of the Zhezdinsky concentrating mill tailings in Kazakhstan
(National Mining University, 2020-09-30)Purpose. Development of the rational technology for processing manganese-bearing tailings of the Zhezdinsky concentrating mill in the Republic of Kazakhstan aimed to obtaining manganese concentrate for smelting the ...