Lower-quality iron ores undergo magnetic separation, in which ore particles pass by magnets and collect around them, leaving nonmagnetic gangue behind.
(Lower-quality iron ores; undergo; magnetic separation, in which ore particles pass by magnets and collect around them) (magnetic separation; pass; ) (ore particles; collect; around them; L:magnetic separation)
Lower-quality iron ores magnetic separation ore particles
undergo pass collect
magnetic separation, in which ore particles pass by magnets and collect around them
around them L:magnetic separation