Method for selectively reducing, separating and recycling vanadium and chrome from solution containing vanadium and chrome

The invention discloses a method for selectively reducing, separating and recycling vanadium and chrome from a solution containing vanadium and chrome. The method is characterized by comprising the steps that a compound of V(IV) or/and V(III) and a solution of the compound serve as a reducing agent,...

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Bibliographische Detailangaben
Hauptverfasser:	WANG MINGYU, WANG XUEWEN, ZHOU SHENGFAN, GAO DAXIONG, CHEN BIANFANG
Format:	Patent
Sprache:	chi ; eng
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:	The invention discloses a method for selectively reducing, separating and recycling vanadium and chrome from a solution containing vanadium and chrome. The method is characterized by comprising the steps that a compound of V(IV) or/and V(III) and a solution of the compound serve as a reducing agent, Cr(VI) in the solution is selectively reduced into Cr(III), and then polyvanadic acid or ammonium polyorthovanadate are precipitated out from the solution; after the obtained polyvanadic acid or the ammonium polyorthovanadate is calcined, a vanadium pentoxide product is obtained; and a vanadium precipitation solution hydrates chromic oxide through hydrolytic precipitation after being subjected to purification and impurity removal, or NH4Cr(SO4)2 is precipitated out of the vanadium precipitation solution under the action of ammonium salt, hydrated chromic oxide is obtained after the NH4Cr(SO4)2 is transformed, and after the hydrated chromic oxide is calcined, a chromic oxide product is obtained. The method has the