Removal of titanium dioxide from a filter element

Details Removal of titanium dioxide from a filter element Removal of titanium dioxide from a filter element

1980-05-15

1981-09-29

Caroff, Marc L.

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 29, B08B 308

Patent

active

042920906

ABSTRACT:
Titanium dioxide is removed from contaminated workpieces by immersing them in an alkaline solution containing calcium ions at approximately 30.degree. C. The cleaning solution is made from a concentrated aqueous alkaline hydroxide solution and a calcium salt or from a basic calcium salt, e.g., calcium oxide.

REFERENCES:
patent: 2861015 (1958-11-01), Simon
patent: 3553015 (1971-01-01), Dohogne
patent: 3653095 (1972-04-01), Dupre et al.
patent: 3687858 (1972-08-01), Geisler et al.
patent: 3690949 (1972-09-01), Ng
Metals Handbook, (8th Ed.), vol. 2, 1964, pp. 664-666.

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