... deaquation 脱水，脱水作用 deash 去灰份 de-ashed coal 经脱灰处理的煤炭 ...
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deash rate 脱灰率
deash efficieney 脱灰率
slip the deash 摆脱束缚
The lest results have shown that I he highest recovery of coal is 99% and deash efficiency is 20% using neutral oil of liquified fuel and waste cooking oil as agglomeration oil.
试验结果表明，用煤炭液化中性油与家庭用过的废油作为添加油，油添加量为20％以上时，煤的最大回收率为99％，脱灰率约达20％。
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