(昆明理工大学 材料与冶金工程学院，昆明 650093)
摘 要: 研究石煤一段氧压酸浸过程中硫酸亚铁添加剂对钒浸出率的影响。结果表明：在石煤氧压酸浸过程中加入适量添加剂，钒浸出率可提高8.5%左右。不同气体的压力酸浸实验表明，工业生产过程中，可完全用空气代替工业氧气。采用两段氧压酸浸工艺可有效控制一段浸出液的酸度，并实现钒的选择性浸出，最终一段浸出液的酸度可控制在10 g/L左右，钒浸出率可提高10%。
关键字: 石煤；钒；氧压酸浸；硫酸亚铁；浸出率
acidic oxidizing pressure leaching
（School of Material and Metallurgical Engineering, Kunming University of Science and Technology,
Kunming 650093, China）
Abstract:The effect of ferrous sulfate on the leaching rate of vanadium by one step leaching process was carried out. The results show that with proper amount of additive the leaching rate of vanadium can be improved by 8.5%. Different gaseous pressure acid leaching experiments show that industrial oxygen can be substituted for dry air in commercial production. The acid value of first step leaching liquors can be effectively controlled at 10 g/L by using two steps leaching process, and the leaching rate of vanadium can be improved by 10%.
Key words: black shale; vanadium; acid pressure leaching; ferrous sulfate; leaching rate
