séparation magnétique à haute intensité

CONT: L'évolution des techniques de séparation pneumatique jointe à l'évolution des techniques de séparation magnétique à haute intensité permet, non seulement de traiter des minerais à hématite, mais encore des minerais de manganèse, de magnésite (serpentines), d'épurer des feldspaths ferrifères [...]

CONT: ... beneficiation will be by high-intensity magnetic separation rather than gravity (using spiral heavy media) because this technology is now available and because the latter would introduce contaminants ...
OBS: Magnetic separation: The separation of magnetic materials from nonmagnetic materials, using a magnet. This is an especially important process in the beneficiation of iron ores in which the magnetic mineral is separated from nonmagnetic material; for example, magnetite from other minerals ...