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在史无前例的无产阶级文化大革命中,唐山机车车辆工厂革命职工,活学活用毛主席著作,狠抓革命,猛促生产,成功地创造了湿法再生砂脱水的新方法——气压脱水。它是用压缩空气的压力,使过滤推动力增加,并借压缩空气通过砂子时所引起的冲刷作用,使水加速沉降,从而提高脱水速度的一种脱水装置。几年来,气压脱水这一新生事物,在毛主席的无产阶级革命路线指引下,在全国许多厂矿得到了迅速的推广。广大铸造战线的革命职工,遵照伟大领袖毛主席关于“人类总得不断地总结经验,有所发现,有所发明,
In the unprecedented proletarian cultural revolution, revolutionary workers and employees of Tangshan Locomotive and Rolling Stock Works learned to work with Chairman Mao’s works. They paid close attention to revolution and urged production to successfully create a new method of dehydration of wet-process recycled sand - pressure dehydration. It is the use of compressed air pressure to increase the driving force of filtration, and by compressed air through the sand caused by the scouring effect, so that the rapid settlement of water to improve the rate of dehydration, a dehydration device. In recent years, the new thing of atmospheric pressure dehydration, under the guidance of Chairman Mao’s proletarian revolutionary line, has been rapidly popularized in many factories and mines across the country. The majority of the revolutionary workers in the foundry front follow the example of Chairman Mao, the great leader, that "mankind must constantly sum up his experience, discover something, invent something,