适用于粗洗、分毛完成后的羽毛。

Apply to D&F with pre-washed and sorted.

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在每个房间回风管的前面板上安装有一台一次性的非毛织品过滤器，以及一台板式可洗粗铝过滤器，以捕捉收集可能产生的任何粉尘。

A disposable non-woolen filter, and a panel type washable coarse aluminum filter are installed in the front panel of return air duct of each room, to trap powder generated, if any.

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也可以选用螺旋挤压机或挤压洗浆机从粗浆中抽提黑液。

Extraction of black liquor from brown stock may also be effected through screw presses of wash presses.

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