Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第18卷    第z1期    总第100期    2008年6月

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文章编号:1004-0609(2008)S1-0084-04
石煤氧压酸浸提钒工艺优化
李存兄,魏  昶,李旻廷,樊  刚,邓志敢

(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

Process optimization of vanadium extraction from black shale by
acidic oxidizing pressure leaching
LI Cun-xiong, WEI Chang, LI Min-ting, FAN Gang, DENG Zhi-gan

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

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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