Method for extracting vanadium from high-calcium and high-phosphorus vanadium slag

The invention provides a method for extracting vanadium from high-calcium and high-phosphorus vanadium slag. The method comprises the following steps of: crushing the high-calcium and high-phosphorus vanadium slag, and adding concentrated hydrochloric acid into the crushed high-calcium and high-phos...

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Bibliographische Detailangaben
Hauptverfasser:	SUN ZHAOHUI, YIN ZHAOQIAN
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 provides a method for extracting vanadium from high-calcium and high-phosphorus vanadium slag. The method comprises the following steps of: crushing the high-calcium and high-phosphorus vanadium slag, and adding concentrated hydrochloric acid into the crushed high-calcium and high-phosphorus vanadium slag to carry out activating treatment, wherein the CaO/V2O5 content in the high-calcium and high-phosphorus vanadium slag is higher than 1, and the phosphorus content in the high-calcium and high-phosphorus vanadium slag is higher than 0.15wt%; filtering and separating to obtain a supernatant and low-calcium and low-phosphorus vanadium slag; regulating the pH value of the supernatant to 2.5-10, filtering to obtain ferric hydroxide, evaporating and concentrating the filtered solution, and then, cooling and crystallizing to obtain calcium chloride; roasting the low-calcium and low-phosphorus vanadium slag within the temperature range of 800-1500 DEG C to obtain clinker, and then, carrying out acid le