Crux Australis
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Cleaning CRT monitors
I'm trying to clean the grey coating - frit - from old CRT monitors, inside and out. I've found that alcohols (particularly methanol) clean it best,
but it needs to be scrubbed quite vigourously. I'd really like a method which will dissolve the frit (which contains mostly PbO, but also may contain
traces of mercury and cadmium) without scrubbing, so that I can automate the process and reclaim the chemicals for recycling. Anyone have any ideas or
experience in this?
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watson.fawkes
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Quote: Originally posted by Crux Australis  | | I'm trying to clean the grey coating - frit - from old CRT monitors, inside and out. I've found that alcohols (particularly methanol) clean it best,
but it needs to be scrubbed quite vigourously. I'd really like a method which will dissolve the frit (which contains mostly PbO, but also may contain
traces of mercury and cadmium) without scrubbing, so that I can automate the process and reclaim the chemicals for recycling. Anyone have any ideas or
experience in this? |
Idea: Acetic acid should dissolve your mixed PbO. I don't know how fast, though.
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Rosco Bodine
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Nitric acid or aqua regia are candidates, and methane sulfonic acid and sulphamic acids could be useful also.
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marko
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The grey coating is aquadag (pretty much straight graphite).
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neptunium
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the inside also contain some rare earth oxides and aluminum fine powder HCl should take care of that
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