Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1973-10-03
1976-04-27
Vertiz, Oscar R.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204112, 204114, 204120, 423 34, 423 35, 423 92, 423104, 423105, 423127, 423129, 423556, 210 59, C01F 774, C25C 112, C25C 114, C25C 106
Patent
active
039533069
ABSTRACT:
An improved process for preparing highly concentrated salt solutions of metals of high purity from waste metal sludges at superior dissolution rates is achieved by preparing, concentrating and washing the sludge containing insoluble metal hydroxide under specific conditions to safeguard against the solids being exposed to air or dried out. The wet sludge is then dissolved in a dilute acid. The resultant solution can be used directly e.g. as make up in many electrolytic metal finishing processes to compensate for drag out losses occurred, or as the primary metal source in electrolytic processes employing insoluble anodes. Other specific uses for the process include the preparation of aluminum sulfate coagulants.
REFERENCES:
patent: 3493328 (1970-02-01), Niewenhuis
patent: 3725266 (1973-04-01), Haviland
patent: 3787306 (1974-01-01), Senior et al.
chalyi et al., Chemical Abstracts, Vol. 59, No. 6011b.
Chalyi, Chemical Abstracts, Vol. 59, No. 9398Q.
Dart Environment and Services Company
Hearn Brian E.
LeMaire Margareta
Valles Fred S.
Vertiz Oscar R.
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