Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1991-09-20
1992-11-03
Spear, Frank
Liquid purification or separation
Processes
Ion exchange or selective sorption
34 60, 34 12, 210751, 210770, 210806, B01D 3700
Patent
active
051606283
ABSTRACT:
A method for making a filler from automotive paint sludge is provided. Paint sludge containing water, solvent and uncured polymer resin is treated by removing a first portion of the water by mechanically drying the sludge to produce a concentrated sludge, and a second portion of the water is removed by treating the sludge with a chemical drying agent to produce a dried powder. Alternatively, the second portion of the water may be removed by agitating the concentrated sludge under a vacuum to produce a dehydrated putty. The resulting dried powder or putty can then be used as a filler in sealants and other products.
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Gerace Janet M.
Gerace Michael J.
Aster, Inc.
Spear Frank
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