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NIOSH Elongate Mineral Particle Research
2020<p><span>During the mining and processing of some mineral commodities and other rock types there is the potential to produce respirable dust containing naturally occurring elongate mineral particles (EMPs), including both asbestos and/or non-asbestos fibers.
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Diamagnetic particle capture and mineral separation
IEEE Transactions on Magnetics, 1981A method has been developed to collect diamagnetic particles and to separate diamagnetic components from a critical mineral resource, in this case, aluminum minerals from alunite ore. A study of matrix design for this purpose and for enhancement of the magnetic force by the use of a paramagnetic liquid has resulted in particle collection from model ...
D. Kelland +3 more
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Far infrared spectroscopy of mineral particles
2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves, 2008Mineralogical characterization and far-infrared spectroscopy of laboratory analogues in the wavelength range 57 - 210 mum is performed for interpreting data from Herschelpsilas Photodetector Array Camera and Spectrometer (PACS).
Tatiana Brusentsova +8 more
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Elongate mineral particles in the natural environment
Toxicology and Applied Pharmacology, 2018When considering elongate mineral particles (EMPs) in the natural environment it is important to first: 1) define what an elongate mineral is and 2) present what we as mineralogists and geologists know about their distribution. However, it is often very difficult to define the natural world, instead we physical scientists resort to describing it.
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Reinforced Mineral Particles by Surface Coating
Advanced Materials Research, 2011Minerals particles such as diatomite and perlite can be reinforced by coating their surfaces with aluminum silicate or zirconium silicate. Scanning electron microscopy shows that the surface of the coated particles is covered by a layer of a glassy/ceramic type coating.
Bo Wang, Michael Greene
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Mineral and organic particles in astronomy
Astrophysics and Space Science, 1989A mixture of inorganic mineral grains comprised mainly of silica with linked SiO4 tetrahedra together with organic grains characterised by the spectrum of an ‘average’ bacterium provides excellent agreement with astronomical data relating to broad 10 and 20μm emission and absorption features.
N. C. Wickramasinghe +2 more
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Electroacoustic measurements of sulfide mineral particles
Minerals Engineering, 1997Abstract Electroacoustic measurements (AcoustoSizer, Matec Applied Sciences) of zeta potential and particle size distribution are reported on well characterised ultrafine (−5 μm) sphalerite and galena particles. For both sulfide minerals the zeta potentials determined electroacoustically are in good agreement with those determined using the more ...
C.A Prestidge, W.N Rowlands
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Tefluthrin Sorption to Mineral Particles: Role of Particle Organic Coatings
International Journal of Environmental Analytical Chemistry, 1995Abstract The sorption of tefluthrin was studied on “pure” clay minerals and those that had been coated with aquatic humic substances over a mass percent carbon range of 0.02 to 2.15. Tefluthrin sorption onto humic-coated minerals was significantly greater than on to the clean minerals and increased with increasing quantities of sorbed humic substances.
J. L. Zhou +4 more
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Modified column flotation of mineral particles
International Journal of Mineral Processing, 1996Abstract This work summarizes flotation results obtained in a modified column which selectively separates drained particles from the froth zone and uses a secondary wash water system between the feed and the froth zone. Flotation results on gold, copper, lead-zinc and fluorite ores are reported.
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Hydrodynamics of Bubble-Mineral Particle Collisions
Mineral Processing and Extractive Metallurgy Review, 1989Abstract This chapter surveys the hydrodynamic interactions between particles and bubbles in flotation. Some new approximate equations are given for collision efficiency. It is shown that collision processes of particles with bubbles are less effective than sliding processes because of their short duration and the strong deformation of the bubble at ...
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