The floatation tungsten concentrate 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。
2
Under the same experiment conditions, the algae removal rate of Phosphonium salt modified montmorillonite is better than quaternary modified montmorillonite.
同等实验条件下，季磷盐改性蒙脱土的除藻效果比季铵盐改性蒙脱土的好；
3
The phase transfer catalyzed Wittig reaction of allyl diphenyl phosphonium salt with substituted aromatic aldehydes using potassium carbonate as base provides 1, 3-dienes with good E-selectivity.