METHOD OF VANADIUM RECOVERY FROM CONVERTER VANADIUM SLAGS

• Main Authors: KOZLOV VLADILLEN ALEKSANDROVICH, SUEHTIN GENNADIJ LAZAREVICH, SHAJAKHMETOVA ROZA ABDRAKHMANOVNA, ALIKIN V.I, GRISHECHKIN A.I
• Format: Patent
• Language: English
• Published: 20.07.2000
• Edition: 7
• 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

hydrometallurgy. SUBSTANCE: method relates to methods of vanadium recovery from monoprocess converter vanadium slags. Initial product is used in the form of monoprocess nonroasted converter vanadium slags which are leached with solution of sulfuric acid with pH gradient equalling at least 0.1 pH/min up to obtaining solution pH of 3.0-4.0 with subsequent filtration and final recovery of vanadium from cake with acid. The method simplifies the process of vanadium recovery from converter slags due to use of initial product in the form of monoprocess converter vanadium slags which do not need oxidizing roasting, and preset conditions of leaching process provides for high degree of recovery of vanadium from slag. EFFECT: higher efficiency. 3 ex