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P. A. Shumilov
P. A. Shumilov
Mining Institute of the Kola Scientific Center of the RAS
Mining Institute of the Kola Scientific Center of the RAS
Apatity
Russia

Articles

Metallurgy and concentration
  • Date submitted
    2022-05-17
  • Date accepted
    2022-09-06
  • Date published
    2022-11-03

On the need to classify rock mass fed to dry magnetic separation

Article preview

The hypothesis of a possible use of dry magnetic separation is substantiated on the example of ores from ferruginous quartzite deposits operated by plants of PAO “Severstal” Holding. Size class of ore after medium crushing is –80+0 mm when the vibrating feeder is used for feeding ore mass to the separation zone. The rationale is based on the analysis of video recording of physical simulation on a laboratory drum magnetic separator of SMBS-L series, in the VSDC Video Editor, and simulation modelling of dry magnetic separation on its virtual prototype in Rocky DEM software package. It has been proved that the use of a vibrating feeder for feeding the material to the working area of a magnetic separator makes it possible to: form a monolayer on the surface of the vibrating feeder chute with a thickness close to the maximum size of a lump of separated ore; implement batch feed of material to the separation zone; increase the spacing between lumps in the separation zone when passing through the free fall area, thereby allowing dry magnetic separation of ferruginous quartzites of size class –80+0 mm without pre-preparation.

How to cite: Shibaeva D.N., Tereshchenko S.V., Asanovich D.A., Shumilov P.A. On the need to classify rock mass fed to dry magnetic separation // Journal of Mining Institute. 2022. Vol. 256. p. 603-612. DOI: 10.31897/PMI.2022.79
Without section
  • Date submitted
    2004-12-17
  • Date accepted
    2005-01-13
  • Date published
    2005-07-01

About the role of grinding medium in preparation of matte for flotation separation

Article preview

Investigations have been carried out into the grindability of high-grade matte in various types of mills. Differences in the character of grinding by means of rods, balls and cilpebs are shown. Recommendations for increasing the productivity of mechanical grinding are given.

How to cite: Rakaev A.I., Shumilov P.A., Maksimov V.I., Besedovskii S.G. About the role of grinding medium in preparation of matte for flotation separation // Journal of Mining Institute. 2005. Vol. 165. p. 149-153.