Flotation makes possible the processing of complex intergrown ores containing copper, lead, zinc, and pyrite into separate concentrates and tailings an impossible task with gravity, magnetic, or electric separation methods.
To obtain separate concentrates by selective flotation involves high unit-cost, poor quality of the concentrates and relatively low overall recoveries [ 15].
This effect can be used to separate, concentrate, manipulate, trap, target and transfer macromolecules such as bio-molecules and DNA in a microchannel.
All ore coming out of the mines is low-grade, with iron content of around 35%. Pelletizing that ore a laborious process of grinding, separating, concentrating, filtering, drying and heating bumps that content up to 65% or so.
In cases such as the Sudbury deposit, where the copper content of the ore is almost equal to that of nickel, the concentrate is subjected to a second selective flotation whereby the copper is floated to produce a low-nickel copper concentrate and a separate nickel concentrate, each to be processed in its respective smelting line.
On the same day that Guardian/ICM research on political disenchantment finds the electorate in angry mood, and younger voters especially switched off, Ipsos Mori's separate analysis concentrates on the psychological disposition thought to do most to foster civic and political engagement: trust.
Briefly, hBMVEC-conditioned basolateral media was concentrated and SDS-PAGE (12%) was used to separate the concentrate for the examination of IL-1β IL-1β-6.
The chelating resins are used in chemical analysis to separate and concentrate trace metals.
Cost estimates included the added cost of collecting a patient's blood during surgery, which involves suctioning up blood from internal bleeding, collecting it in a sterile container and putting it through a process that separates and concentrates the red blood cells, which are then suspended in saline and reinfused into the patient.
Any of several methods gaseous diffusion, gas centrifugation, liquid thermal diffusion can be employed to separate and concentrate the fissile uranium-235 isotope into several grades, from low-enrichment (2 to 3 percent uranium-235) to fully enriched (97 to 99 percent uranium-235).
Dielectrophoresis (DEP) has been widely used to manipulate, separate, and concentrate microscale particles.
