| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 11.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Method for regenerating, within a reactor vessel, a spent Type II etchant soln of the character produced during chemical milling of Al & Al alloy parts which have been submersed into a Type II etchant soln contained within a chemical milling tank to form a regenerated etchant soln., said method comprising - Removing spent etchant soln from the chemical milling tank - Cooling said spent etchant soln - Adding water to said spent etchant soln to form an ambient T diluted etchant soln. - Filtering said ambient T diluted etchant soln to form a filte red soln - Transferring said filtered soln to the reactor vessel - Adding alumina trihydrate to said filtered soln to form a mixed soln & to cause a reaction between said mixed soln & said filtered soln to form the regenerated etchant soln & alumina |
| PATENT PHOTOCOPY | Available on request |
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