METHOD OF UTILIZATION OF GALVANIC PROCESS SLUDGE

FIELD: utilization of galvanic process sludge. SUBSTANCE: proposed method includes stages of leaching, regeneration, filtration and decontamination; prior to leaching, sludge is subjected to galvanic activation by water at high pressure, up to 15 Mpa; leaching of copper, nickel and zinc is performed...

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Bibliographische Detailangaben
Hauptverfasser:	NAJDENKO V.V, NAUMOV V.I, GUBANOV L.N, NAUMOV JU.I
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PRETREATMENT OF RAW MATERIALS PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS 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
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Beschreibung
Zusammenfassung:	FIELD: utilization of galvanic process sludge. SUBSTANCE: proposed method includes stages of leaching, regeneration, filtration and decontamination; prior to leaching, sludge is subjected to galvanic activation by water at high pressure, up to 15 Mpa; leaching of copper, nickel and zinc is performed in succession in one apparatus first with hydrochloric acid solution at concentration of 0.3-0.5 m/l and then in ammonia chloride solution of the composition, m/l: 0.3-0.5 NH4Cl + 3.0-4.0 NH4OH, which is formed at addition of excessive ammonia water into first solution. Proposed method ensures content of admixtures in separated metals. EFFECT: enhanced efficiency; waste-free process. 2 cl, 1 dwg