xuǎn​kuàng

ore dressing

选矿 選礦 xuǎn//kuàng
ore dressing
to process mined ore to remove impurities and increase its purity; mineral separation
concentrate
ore that has been processed to remove impurities and waste rock, making it suitable for smelting

Frequency

Movie subtitles
0.030 per million appears in 0% of films
Written text
0.727 per million

Sources