Abstract: The invention provides a process for recovering oxalic acid used in ferrous metal pickling procedures, thereby reducing the total cost and environmental load of the pickling treatments.
Type:
Grant
Filed:
September 11, 2017
Date of Patent:
November 24, 2020
Assignee:
TAL OR ECOLOGY LTD.
Inventors:
Reuben David Schapiro, Vladimir Boiko, Lev Shapiro