Composition and properties of highly dispersed particles generated under sulfide ore milling

Laser diffraction analysis and dynamic light scattering method are used to study highly dispersed particles generated during milling of lead–zinc ore (Gorevsky deposit), rich sulfide and impregnated copper–nickel ore (Norilsk and Kingash deposits), as well as Gorevsky Pb concentrate and Sorsky depos...

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Bibliographic Details
Published in:Journal of mining science 2016-09, Vol.52 (5), p.982-988
Main Authors: Mikhlin, Yu. L., Vorob’ev, S. A., Karasev, S. V., Romanchenko, A. S., Karacharov, A. A., Kamensky, E. S., Burdakova, E. A.
Format: Article
Language:English
Subjects:
Analysis
Analytical methods
Chalcopyrite
Chemical precipitation
Composition
Concentrates (ores)
Copper
Copper ores
Diameters
Earth and Environmental Science
Earth Sciences
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Heavy metals
Lasers
Lead
Light diffraction
Light scattering
Metals
Mineral Dressing
Mineral Resources
Minerals
Molybdenite
Molybdenum compounds
Nickel
Nickel ores
Nonferrous metals
Ores
Oxidation
Particle size
Pentlandite
Photoelectron spectroscopy
Photoelectrons
Photon correlation spectroscopy
Precipitation (Meteorology)
Sphalerite
Sulfide
Sulfides
Sulphides
X-ray spectroscopy
Zinc
Zinc mining
Zinc ores
Zincblende
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Summary:Laser diffraction analysis and dynamic light scattering method are used to study highly dispersed particles generated during milling of lead–zinc ore (Gorevsky deposit), rich sulfide and impregnated copper–nickel ore (Norilsk and Kingash deposits), as well as Gorevsky Pb concentrate and Sorsky deposit Cu and Mo concentrates. Zeta-potentials of particles are measured in clarified (colloid) solution above precipitation; surface composition of ores and their fine sizes is analyzed using X-ray photoelectron spectroscopy. The highest yield of particles under 5 μm size grade (to 3 total percent) was observed in case of Kingash ore; moreover, zeta-potential of these particles was positive at pH 9.5 and surface compositions of precipitation and colloid particles were nearly the same. Comparatively high content of ultra dispersed fractions was observed in case of Gorevsky ore and Pb concentrate. Clarified solutions contained mostly aggregates of nano-size particles, first of all, Si and Mg minerals, with the hydrodynamic diameter of 500–1200 nm, which shows little changes with time. Sulfide component of hydrosols contains many nano-size particles of minerals that better resist oxidation (sphalerite, molybdenite, pentlandite, chalcopyrite) and, in particular, can transfer metals within the ambient medium.
ISSN:1062-7391
1573-8736
DOI:10.1134/S1062739116041490