CAO Yu-xunThe clean coal recovery has increased by 6.8% at Shenhua Group Co. through the recovery of clean coal lost in middlings by using middlings rewash system.

• 神华集团乌达矿业公司凯鸿煤化有限责任公司通过增加中煤再洗系统；回收中煤中损失的精煤；从而使精煤回收率提高了6.；8%25。