METHOD FOR SMELTING COPPER-CONTAINING DROSS BY USING SLAG-FUMING FURNACE

• Main Authors: FUJITA KEIJI, TAKAHASHI JUNICHI
• Format: Patent
• Language: English
• Published: 26.02.2009
• Subjects: 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

PROBLEM TO BE SOLVED: To provide a smelting method for efficiently recovering valuable metals such as copper and lead, from a copper-containing dross that is produced in a smelting process of smelting zinc and/or lead. SOLUTION: This smelting method includes charging the copper-containing dross that contains copper and lead into a fuming furnace in which a fuming treatment of a slag that is produced in a smelting furnace for smelting zinc and/or lead is operated under the coexistence of copper, and heating the mixture to reduce the metals. The smelting method further includes locally forming a region of a high-temperature melt in the fuming furnace. COPYRIGHT: (C)2009,JPO&INPIT