SEPARATION OF VANADIUM FROM VANADIUM CONTAINING ALUMINUM SOLUTION

• Main Authors: KIRISHIMA KENJI, SHIMAUCHI HISAAKI, MATSUNAGA ICHIRO, OGAWA KOJI, SHIBAYAMA HARUO
• Format: Patent
• Language: English
• Published: 20.09.1994
• Edition: 5
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; DISPOSAL OF SOLID WASTE; FERROUS OR NON-FERROUS ALLOYS; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; RECLAMATION OF CONTAMINED SOIL SOIL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

PURPOSE:To provide a method for selectively extracting and separating vanadi um from an aluminum solution containing 4-valent vanadium and capable of industrially applying. CONSTITUTION:In extracting and separating vanadium from an extracting original solution, which is the aluminum solution containing 4-valent vanadium, the extracting original solution is adjusted to pH 1-4, brought into contact with an extracting organic compound obtained by mixing 2-ethylhexyl mono-2- ethyl hexyl phosphonate with a diluent (e.g. aromatic hydrocarbon) in the ratio of 20:80 to 60:40 by weight ratio and then is brought into contact with a mineral acid of 0.05-2 mol/l to strip vanadium into the mineral aq. solution. Thus, vanadium is extremely efficiently extracted, which is industrially worthwhile.