METHOD FOR REPROCESSING OF GALVANIC SLUDGE

FIELD: reprocessing of technogenic wastes, in particular, sludge of nickelizing, copperizing, chromizing processes and mixed sludge. ^ SUBSTANCE: method involves mixing galvanic sludge with aluminum powder to produce reaction mixture; providing aluminothermic reduction of oxidized metal sludge in re...

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Bibliographische Detailangaben
Hauptverfasser:	LONSKIJ V.B, BELJAEV I.V, LEVIN A.I, FOMIN A.N
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS 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 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: reprocessing of technogenic wastes, in particular, sludge of nickelizing, copperizing, chromizing processes and mixed sludge. ^ SUBSTANCE: method involves mixing galvanic sludge with aluminum powder to produce reaction mixture; providing aluminothermic reduction of oxidized metal sludge in reaction vessel at room temperature without adding of slag-forming substances; obtaining alloy and slag, which may be used for practical application. Aluminum powder with passivated surface is used in the process. Reduction process is carried out in metal reaction vessel. Before mixing with aluminum powder, galvanic sludge is subjected to activation-stabilization annealing process at temperature of 800-1,0000C for 1-3 hours in air. ^ EFFECT: increased efficiency and profitableness of reprocessing of galvanic sludge and elimination of self-ignition of aluminum powder. ^ 5 cl, 5 tbl, 5 ex