实践表明，磨矿分级效率得到进一步提高。
The practice has shown a further improvement on the grindingclassification efficiency.
德瑞克细筛的高效、精确分级，提高了三段磨矿的磨矿分级效率，提高了321系统处理原矿的能力。
The highly efficient and accurate classification has improved the grinding-classification efficiency of the tertiary grinding , thus raising the run-of-mine ore throughput of System 321.
本文通过对包钢选矿厂原磨矿分级作业状况的分析，认为该工艺存在流程长，设备配置多，能耗高，旋流器分级效率低的问题。
Some problems as process long, many equipments, high-energy consumption and cyclone efficiency low are found on the analysis of grinding at the Plant.
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