Ganzhou has supplied about 1.2 million tons of tungstenconcentrate since 1949, which is 49% of the total output in China.
从1949年至今赣州累计生产钨精矿近120万吨，约占全国同期总产量的49%。
2
The floatation tungstenconcentrate is treated by acid pickling to remove phosphonium and carbonate, and its final concentrate is 70.
浮选钨精矿经过酸浸除磷、碳酸盐后，获得混合钨精矿品位为70。
3
This paper analyzed the behaviour of tungsten and arsenic contamination factor in phosphorous-arsenic slag under the condition of pressure digestion with NaOH for wolframite concentrate.