The fluorine content in cleanedcoal will be nearly same as its original matrix by two grade defluorination treatment.
用二级脱氟处理方法可使高纯煤中氟含量达到实际应用所允许的要求，接近原煤中的氟含量。
2
The cleanedcoal yield before and after ultrasonic treatment, the effect of flotation desulfurization and flotation speed were studied.
笔者对煤泥超声处理前后浮选的精煤产率、浮选脱硫效果、浮选速度等方面进行了试验研究。
3
The result indicated that it can enhance the yield of cleanedcoal, increase the slime water clarity, accelerate rate and reduce moisture content in press cake by adding PAM.