Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1997-08-20
1998-11-17
Valentine, Donald R.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204270, 204278, 204279, 204289, 204280, C25C 700, C25D 2104
Patent
active
058371117
ABSTRACT:
A filtering mechanism for especially well suited for corrosive mists which are generated from electro-refining systems. A layer of bristles forming a brush is secured to an electrode within the electro-refining system. As the electro-refining system produces a mist of corrosive chemicals above the slurry, the mist rises through the bristles. As the mist passes through the bristles, the corrosive chemical adheres to the bristles; hence, the corrosive chemical does not pass into the surrounding environment. Periodically, the bristles are washed to remove the corrosive chemicals. In one embodiment of the invention, the edge between the electrodes and the wall of the slurry bath are partially sealed with a pliable member which assists in directing the mist through the bristles. In still another embodiment of the invention, the bristles are coated to react with the corrosive chemical within the bath; and in some embodiments, the coating changes colors when a selected concentration of corrosive chemical has been encountered. This changing of color assists in determining when the bristles should be cleaned of the corrosive chemical. In still another embodiment of the invention, two layers of bristles are used and a venting system is provided between the two layers of bristles.
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