Filter aid and method for using same for reclaiming oil coolants

Details Filter aid and method for using same for reclaiming oil coolants Filter aid and method for using same for reclaiming oil coolants

1991-11-08

1992-06-16

Sever, Frank

Liquid purification or separation

Processes

Chemical treatment

210767, 210501, 210504, 210508, B01D 3702

Patent

active

051222817

ABSTRACT:
A filter aid material and a method for using same in a filtration system for reclaiming and maintaining coolant oil used in aluminum rolling or working processes are disclosed. The filter aid is a fibrous material which is permeated with an acid material and may be provided in either particulate form as a body feed or as a compressed filter pad. As contaminated oil flows through the filter aid, the acid acts chemically to remove aluminum fines and oxides as well as the aluminum portion of contaminating soap in the coolant oil. Use of the filter aid with acid greatly reduces the amount of conventional filter aid previously used and produces a relatively small amount of residual filter aid which can be disposed of by incineration.

REFERENCES:
patent: 4847196 (1989-07-01), Geisler et al.

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