高品位攀精矿
high grade Panzhihua concentrate
high grade PANZHIHUA concentrates
钛精矿品位
Titanium concentrade grade
攀枝花矿务局
Panzhihua coal mine bureau
攀枝花钛渣
Panzhihua titanium bearing slag
表外低品位矿
low-grade submarginal ore
尾矿低品位锡石再回收
recovery of the low-grade cassiterite in tailings
中低品位矿
middle and low grade bauxite
提高精矿品位
improving concentrate grade
increasing the concentrates grade
锌精矿品位
grade of zinc concentrate
zinc concentrate grade