Method to dissolve hydrated aluminum hydroxide gel in potable ho

Details Method to dissolve hydrated aluminum hydroxide gel in potable ho Method to dissolve hydrated aluminum hydroxide gel in potable ho

1987-09-10

1988-12-06

Pal, Asok

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 3, 134 28, 134 41, 423132, B08B 308

Patent

active

047894075

ABSTRACT:
A method of dissolving aluminum hydroxide gel formed in situ in water heaters having aluminum anode rods therein, comprising contacting the aluminum hydroxide gel with phosphoric acid, said phosphoric acid being present in the range of from about 9% to about 35% by volume at a temperature in the range of from about 138.degree. F. to about 160.degree. F.

REFERENCES:
patent: 2424049 (1947-07-01), Parker
patent: 4515641 (1985-05-01), Juenger

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