复合添加剂对石煤提钒焙烧与浸出工艺研究

Abstract

Abstract: Composite additive roasting and low-acid leaching method was used to study the extraction of vanadium from stone coal mines.Effects of various process parameters of roasting and leaching processes on the leaching rate of vanadium was investigated.Experimental results showed that the optimum roasting and leaching conditions were as follows:the optimum mass ratio of Na₂SO₄,NaCl and Na₂CO₃ was 7∶1∶11 in composite additive,roasting temperature was 750 ℃,roasting time was 2.5 h,leaching temperature was 50 ℃,and leaching time was 5 h.Under the optimum conditions,the leaching rate of vanadium can reach 81.9%, and it′s significantly higher than the traditional sodium roasting process.

Key words: stone coal, vanadium, roasting, leaching

CLC Number:

TQ135.11

LEI Hui, CHEN Jian-Mei, HU Sheng-Qiang, HU Lan-Shuang, GAO Feng, YAN Wen-Bin. Study on effect of composite additive on roasting and leaching processes for vanadium extraction from stone coal[J]. INORGANICCHEMICALSINDUSTRY, 2012, 44(1): 33-.

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Inorganic Acid-Base-Salt Committee of CIESC

Study on effect of composite additive on roasting and leaching processes for vanadium extraction from stone coal

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