The mechanism of additional segregation of minerals by density in the bed of the centrifugal-vibrating concentrator
https://doi.org/10.31242/2618-9712-2022-27-4-527-538
Abstract
In this study we tested a centrifugal vibration concentrator developed by the Institute of Mining of the North SB RAS. Unlike existing analogues, the working body of the concentrator performs vibrations directed along its rotation axis. The test results showed a high degree of influence of the vibration frequency on the extraction of heavy minerals. The new centrifugal concentrator has the ability to control the parameters of vibrations, enabling an active use of the new effective mechanism for segregation (trapping) of heavy components. The best level of extraction of heavy minerals (63.9 %) was achieved with an oscillation frequency of 22 Hz and an amplitude of 2 mm when separating an artificial mixture consisting of river sand and magnetite with a grain size of –0.5 mm. The accumulative bed of heavy minerals in the working organ of the centrifugal vibration concentrator passes into an active loosened state with an oscillation amplitude of more than 1.5 mm. Experimental selection and justification of the most rational regime conditions is applicable in the case of processing natural mineral complexes.
Keywords
centrifugal concentrator,
enrichment,
extraction,
vibration vibrations,
centrifugal force,
bed,
heavy minerals,
gold,
concentrate,
tailings
Supporting agencies: This study was carried out within the framework of the budget programme (number FWRS-2021-0022). We used the equipment of the Shared core facilities (SCF) of the Federal Research Centre SB RAS for the laboratory research (grant number 13.SCF.21.0016).
About the Authors
O. Yu. Ochosov
Chersky Institute of Mining of the North, Siberian Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
OCHOSOV, Oleg Yurievich, Senior Engineer
43 Lenina pr., Yakutsk 677018
A. I. Matveev
Chersky Institute of Mining of the North, Siberian Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
MATVEEV, Andrey Innokentevich, Dr. Sci. (Engineering), Head of Laboratory, Author ID: 7102723417
43 Lenina pr., Yakutsk 677018
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Review
For citations:
Ochosov O.Yu., Matveev A.I. The mechanism of additional segregation of minerals by density in the bed of the centrifugal-vibrating concentrator. Arctic and Subarctic Natural Resources. 2022;27(4):527-538. (In Russ.) https://doi.org/10.31242/2618-9712-2022-27-4-527-538
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