Process of recovering aluminum etchant

Details Process of recovering aluminum etchant Process of recovering aluminum etchant

1984-12-17

1986-07-22

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

1566591, 156665, 156345, 252 795, C23F 102, B44C 122, C03C 1500, C03C 2506

Patent

active

046017801

ABSTRACT:
This application involves a continuous process for chemical milling of aluminum by recovering caustic from an etch tank solution by treating the solution having dissolved metals and other contaminants with calcium oxide and barium compounds to form precipitates which are separated by centrifugation to permit recovery and reuse of the caustic.

REFERENCES:
patent: 3607482 (1971-09-01), Selm
patent: 3712838 (1973-01-01), Weissenberg

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