(昆明理工大學(xué) 材料與冶金工程學(xué)院，昆明 650093)
摘 要: 研究石煤一段氧壓酸浸過程中硫酸亞鐵添加劑對釩浸出率的影響。結(jié)果表明：在石煤氧壓酸浸過程中加入適量添加劑，釩浸出率可提高8.5%左右。不同氣體的壓力酸浸實驗表明，工業(yè)生產(chǎn)過程中，可完全用空氣代替工業(yè)氧氣。采用兩段氧壓酸浸工藝可有效控制一段浸出液的酸度，并實現(xiàn)釩的選擇性浸出，最終一段浸出液的酸度可控制在10 g/L左右，釩浸出率可提高10%。
關(guān)鍵字: 石煤；釩；氧壓酸浸；硫酸亞鐵；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
