Method for flushing an undesired precipitate from apparatus surf

Details Method for flushing an undesired precipitate from apparatus surf Method for flushing an undesired precipitate from apparatus surf

1994-12-08

1995-12-19

McCarthy, Neil

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210912, 134 2213, 134 2217, C02F 162

Patent

active

054765935

ABSTRACT:
A method of removing undesired precipitate from the surfaces of an apparatus; wherein the apparatus is used in a process for removing silver from silver bearing photoprocessing solutions and the process includes the step of mixing a mercapto-s-triazine, or a water soluble salt thereof, with a silver bearing photoprocessing solution, thereby causing formation of the undesired precipitate and a precipitate of silver mercapto-s-triazine, said method comprising flushing inner surfaces of the apparatus with an aqueous solution having a pH of at least 9.8 thereby solubilizing the undesired precipitate.

REFERENCES:
patent: 5288728 (1994-02-01), Spears et al.

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