PROCEDE DE RECUPARETION DE L'ARGENT DE DECHETS DE MATERIAUX PHOTOSENSIBLES

PROCEDE DE RECUPARETION DE L'ARGENT DE DECHETS DE MATERIAUX PHOTOSENSIBLES

The process comprises washing with minimum 1 per cent concn. sodium hydroxide soln., to solubilise the photosensitive layer on its support. Settling, flotation and/or filtration then separates the silver sludge, for drying and melting using alkaline fluxes. The sepd. silver, the washed and dried sup...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: STANCIU MARIN,RO, BELEAUA VICTOR,RO, PARMAC SORIN,RO, POLGA ION,RO, CASTOV ION,RO, TRESTIOREANU FLORICA,RO, TURTURICA LICA,RO
Format: Patent
Sprache:fre ; rum
Schlagworte:
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:The process comprises washing with minimum 1 per cent concn. sodium hydroxide soln., to solubilise the photosensitive layer on its support. Settling, flotation and/or filtration then separates the silver sludge, for drying and melting using alkaline fluxes. The sepd. silver, the washed and dried support and the spent soln. are all able to be re-used.