METHOD FOR RECOVERING TELLURIUM

PURPOSE:To provide the method for recovering the tellurium which enhances the efficiency of concentrating Te by improving a sulfuric acid leaching stage for intermediate products, such as dross, generated in smelting of Pb and Zn in a blast furnace as a fore stage for recovering Te from the intermed...

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Bibliographische Detailangaben
Hauptverfasser:	MINAMI CHIAKI, KUBOTA HARUTOSHI, TAKEI KAZUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS 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:	PURPOSE:To provide the method for recovering the tellurium which enhances the efficiency of concentrating Te by improving a sulfuric acid leaching stage for intermediate products, such as dross, generated in smelting of Pb and Zn in a blast furnace as a fore stage for recovering Te from the intermediate products. CONSTITUTION:This method consists of a stage for placing the intermediate products on a grid plate having 5mmX5mm to 15mmX15mm sizes of opening parts, feeding a sulfuric acid-contg. liquid thereto from below to execute leaching, withdrawing a part of a circulation liquid for leaching, adjusting the pH to 5 to 6 by an alkali-contg. soln. and separating the formed solids from the liquid.