A new abrasion resistance material used as the screening panel in coal-cleaning facto-ries is studied.
研制了主要用于煤碳工业洗煤厂的脱水筛板的新型耐磨材料。
2
The rule of hazard analysis and critical control point(HACCP) was used in the research program. Field researches of technological process and working environment in coal-cleaning plants were surveyed.
运用危害分析与关键控制点（H ACCP）的原理，对选煤厂的生产工艺、作业环境进行现场调研。
3
Through ascertaining appropriate seam exploitation ratio, strengthening the management of equipments and coalcleaning technology, and investing reasonable, this phenomenon was stopped.