In order to further verify the stability of the leaching, to choose the best technical parameters for a six kintal category to expand the experiment, the vanadium leaching rate not lower than 85%, which have a same test results as small experiments. 为了进一步验证浸出的稳定性,选择最佳工艺参数进行了六公斤级扩大实验,钒的浸出率均不低于85%,与小试基本吻合。