(昆明理工大學(xué) 材料與冶金工程學(xué)院，昆明 650093)
摘 要: 分別考察石煤常壓氧化酸浸和加壓氧化酸浸過(guò)程中的釩浸取率。結(jié)果表明：采用石煤加壓氧化酸浸強(qiáng)化提釩新工藝釩浸出率接近90%，比傳統(tǒng)工藝提高15%以上，比現(xiàn)有常壓浸出工藝的釩浸出率提高20%，特別是當(dāng)加入催化劑R時(shí)，加壓氧化酸浸工藝的優(yōu)勢(shì)更為突出。提出石煤加壓氧化酸浸新工藝的較佳工藝條件：硫酸酸度約為250 g/L，時(shí)間約為4 h，加壓釜內(nèi)壓強(qiáng)約為1.2 MPa, 浸出溫度為100～120 ℃，催化劑R的用量約為石煤礦量的2.5%。
關(guān)鍵字: 石煤；釩；氧化酸浸；催化劑；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
