富集
选矿

[ noun ]
crushing and separating ore into valuable substances or waste by any of a variety of techniques
<noun.process>

Beneficiate \Ben`e*fi"ci*ate\, v. t. [Sp. beneficiar to benefit,
to work mines.] (Mining)
To reduce (ores). -- {Ben`e*fi`ci*a"tion} (?), n.