A filter aid and a method of using the same are disclosed that effectively removes contaminants from water-based metal forming liquids used in aluminum forming, rolling and other metal working processes. The filter aid includes a cellulosic material and a cationic polymer flocculating agent that is mixed with contaminated metal working fluid for a predetermined amount of time. The contaminated metal working fluid is then filtered through the filter aid, thereby removing the substantially all of the contaminants therein and allowing purified metal working fluid to return to the process system without carrying contaminants that will harm the surfaces of the metal being worked and the device that forms them. An acid material may be optionally added to the metal forming liquid, the acid serving to maintain the pressure and flow rate at normal levels by controlling clogging in the filter.
本发明公开了一种助滤剂及其使用方法,可有效去除铝成型、轧制和其他
金属加工过程中使用的
水基
金属成型液中的污染物。助滤剂包括
纤维素材料和阳离子聚合物絮凝剂,与受污染的
金属加工液混合预定时间。然后,受污染的
金属加工液通过助滤剂过滤,从而去除其中几乎所有的污染物,并使净化后的
金属加工液返回工艺系统,而不会携带会损害被加工
金属表面和形成
金属表面的设备的污染物。在
金属成型液中还可选择添加酸性材料,酸性材料的作用是通过控制过滤器的堵塞,将压力和流速维持在正常
水平。