Indium extraction from a lead-tin alloy - using lead chloride and zinc chloride in presence of a sulphur-contg. agent

In is extracted from a Pb-Sn alloy with Zn and Pb chloride in the presence of an S-contg. reagent in an amt. 0.1-5 pts S per part In. Extn. is conducted at 300 degrees - 380 degrees C and the resulting In-contg. slag is recovered and leached with aq. acid. In is deposited from the acid leach soln. o...

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Hauptverfasser:	D. NIKITINA GEB. ERMOLENKO,VALENTINA, A. ALEKSEEV,SERGEJ, I. JURTSCHENKO GEB. TEPLOVA,LIDIJA, N. SUTURIN,SERAFIM, E. SEMENOV,ALEKSANDR, E. DJAKOV,VITALIJ, M. SELIVANOV,IVAN, I. ANDREEV,IVAN, A. JAKOVLEV,MICHAIL, I. TUMANOVA,TAMARA, S. GREBENNIKOV,NIKOLAJ
Format:	Patent
Sprache:	eng ; ger
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:	In is extracted from a Pb-Sn alloy with Zn and Pb chloride in the presence of an S-contg. reagent in an amt. 0.1-5 pts S per part In. Extn. is conducted at 300 degrees - 380 degrees C and the resulting In-contg. slag is recovered and leached with aq. acid. In is deposited from the acid leach soln. onto Zn plates immersed in the soln. and recovered as a metal sponge. Zn(OH)2 is pptd. from the remaining soln. and recycled to the extn. stage. The In sponge is electrolytically refined in a melt of Zn and In chloride in the presence of 3-10% NH4Cl and then further electrolytically refined in an aq. electrolyte which is continuously recycled through a sorbent. The presence of the S-contg. reagent in the initial extn. stage the yield and purity of the final prod.