Because coal for power generation varies widely and has high foreign substance content and low grindability, the life time of the rollers in medium speedpulverizer is shortened.
由于发电用煤种类多、杂质含量偏高，可磨性较差，造成中速磨煤机磨辊耐磨寿命缩短。
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The pulverizer boasts the virtues of low rotational speed, big driving force, low noise, high efficiency, easy operation and so on.