Advanced vanadium extracting method from high-calcium high-phosphorus vanadium slag

• Main Authors: JIANG LIN, GAO GUANJIN, FU ZIBI
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2019
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to an advanced vanadium extracting method from high-calcium high-phosphorus vanadium slag, and belongs to the technical field of hydrometallurgy of vanadium. The method solves the technical problem that vanadium loss in the vanadium extraction process from high-calcium high-phosphorus vanadium slag is large, and the reject ratio of vanadium products is high. According to theadvanced vanadium extracting method from high-calcium high-phosphorus vanadium slag, roasted clinker is subjected to acid leaching for the first time, a phosphorus removal agent is added into a first-time leaching solution for dephosphorization, acid leaching is carried out for the second time on first-time leaching residues, after a phosphorus removal agent is added into a second-time leaching solution, the second-time leaching solution returns to first-time acid leaching for being circularly leached to obtain roasted clinker, and second-time leaching residues are subjected to sintering for comprehensive utilization.