(昆明理工大学 材料与冶金工程学院，昆明 650093)
摘 要: 分别考察石煤常压氧化酸浸和加压氧化酸浸过程中的钒浸取率。结果表明：采用石煤加压氧化酸浸强化提钒新工艺钒浸出率接近90%，比传统工艺提高15%以上，比现有常压浸出工艺的钒浸出率提高20%，特别是当加入催化剂R时，加压氧化酸浸工艺的优势更为突出。提出石煤加压氧化酸浸新工艺的较佳工艺条件：硫酸酸度约为250 g/L，时间约为4 h，加压釜内压强约为1.2 MPa, 浸出温度为100～120 ℃，催化剂R的用量约为石煤矿量的2.5%。
关键字: 石煤；钒；氧化酸浸；催化剂；浸取率
strengthening hydrometallurgy
（Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology,
Kunming 650093, China）
Abstract:The leaching rates of vanadium of oxidizing acid leaching at atmospheric pressure and oxidizing acid pressure leaching were studied separately by contrasting conclusion. The results show that the leaching rate of vanadium of oxidizing acid pressure leaching is almost 90%, which is 15% higher than traditional technology and enhanced by 20% than the present acid leaching at atmospheric. When using catalyst R, the advantages of oxidizing acid pressure leaching is more prominent. The better technological conditions are that the acid concentration is 250 g/L, the leaching time is 4 h, the oxygen pressure is about 1.2 MPa, the temperature is 100～120 ℃ and the dosage of catalyst is 2.5% of the stone- coal.
Key words: stone-coal; vanadium; oxidizing acid leaching; catalyst; leaching rate
