Graphite has an immeasurable number of uses, many of which would seem to contradict the others. It is used as soft pencil leads and slick lubricants and is also found in the toughest, most durable sports equipment. It's even being used in batteries.
Introduction: copper ore concentration flotation machine used for separating copper, zinc, lead, thread, gold. In flotation cell concentration, the mineral is usually transferred to the froth, or float fraction, leaving the gangue in the pulp or tailing.