[ˏbeni'fiʃieit]
vt.
选( 矿),( 冶炼前) 对( 矿石) 进行预处理

[ verb ]
process (ores or other raw materials), as by reduction
<verb.change>

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.