Copper and cadmium recovery from aqueous soln. - by replacement with zinc in turbulent granular fluidised beds

Copper and cadmium are recovered from aqueous solutions by replacement with zinc when the soln. is introduced at high velocity (0.08-0.5 m/sec) into a reaction chamber filled with Zn granules. The turbulent movement of the granules causes attrition and the deposited Cu/Cd layer is scraped off exposi...

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Hauptverfasser:	ZANOV,. KUNTSCHEV,NIKOLA, DIMITROV,. MILKOV,ANGEL, STANKOV,. SPASSOV,KOSTADIN, STOJKOV,. BUJUKLIEV,GEORGI, IVANOV,. KOLAROV,MILADIN, MARINOV,. ILIEV,ILIJA
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INORGANIC CHEMISTRY METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	Copper and cadmium are recovered from aqueous solutions by replacement with zinc when the soln. is introduced at high velocity (0.08-0.5 m/sec) into a reaction chamber filled with Zn granules. The turbulent movement of the granules causes attrition and the deposited Cu/Cd layer is scraped off exposing fresh reacting Zn surface. The Cu/Cd is carried out of the reactor with the soln. The reactor in at least 6 m high.