从高钒石油焦中碱浸钒

摘要

研究了用碱法从氧化后的高钒石油焦中浸出钒，进行了槽浸、柱浸、堆浸试验。试验结果表明：在温度110℃、液固体积质量比6∶1、NaO H质量浓度150 g/L最佳条件下，槽浸钒浸出率为67．89％；在NaO H质量浓度为75 g/L时，槽浸钒浸出率最大为53．76％；在 NaO H 质量浓度为75 g/L时，堆浸钒浸出率最大为47．97％。%Leaching of vanadium from high vanadium oxidized petroleum coke using alkali solution was investigated .The tank-leaching ,column-leaching and heap-leaching tests were conducted .The results show that under the optimal temperature of 110 ℃ ,the ratio between liquid volume and solid mass of 6∶1 ,NaOH concentration of 150 g/L ,the tank-leaching rate of vanadium reaches 67 .89% .Under the condition of NaOH concentration of 75 g/L ,the volumn-leaching rate of vanadium reaches 53 .76% . The heap-leaching rate of vanadium reaches 47 .97% under the NaOH concentration of 75 g/L .