钼铁烟尘中钼的氢氧化钠浸出回收研究

强 王(中陕核工业集团二二四大队有限公司，中国)
振川 刘(中陕核工业集团二二四大队有限公司，中国)
翔 戴(中陕核工业集团二二四大队有限公司，中国)
德富 肖(中陕核工业集团二二四大队有限公司，中国)
永 李(中陕核工业集团二二四大队有限公司，中国)

摘要

钼铁冶炼烟尘是钼、铋、硒、锡等金属的重要二次来源。由于其他金属的杂质含量高，很难回收这些金属的高产率。为此，研究了用NaOH碱浸法从钼铁烟尘中选择性提取钼的工艺。考察了NaOH用量、浸出温度、浸出时间和液固比对钼浸出效率的影响。结果表明：在一定条件下，从烟尘中提取钼的最佳工艺条件为：NaOH 250g/t、常温常压、浸出时间4 h、液固比1.5:1 (mL/g)。在此条件下，钼平均浸出率为88.87%，锡、铋大部分富集在浸出渣中。NaOH碱法浸出工艺为从钼铁冶炼烟尘中提取钼提供了一种简单、高效的方法，使废渣成为稀有金属的二次资源。

关键词

钼铁烟尘；浸出；稀有金属；二次资源

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DOI: http://dx.doi.org/10.12345/zyyhbjz.v3i10.33253