酸浸法回收利用非淬水高镁炉渣中铁的研究

发布时间：2018-02-28 18:11

  本文关键词： 高镁炉渣 酸浸法 FeO　出处：《无机盐工业》2017年08期 　论文类型：期刊论文

【摘要】：以非淬水高镁炉渣为原料,采用硝酸对其进行酸解处理,通过调节炉渣滤液中的pH,沉淀回收其中的铁,并制成Fe_2O_3产品。采用红外光谱对Fe_2O_3进行定性分析,采用X射线荧光光谱仪对炉渣组成和Fe_2O_3含量进行分析。系统性考察了硝酸质量分数、酸解温度、酸解时间、pH以及氢氧化钠质量分数对炉渣中Fe回收利用的影响。结果表明该回收利用工艺是可行的。回收利用非淬水高镁炉渣中的铁制备Fe_2O_3的工艺条件:硝酸质量分数为60%、酸解温度为60℃、酸解时间为50 min、pH为8.6、氢氧化钠质量分数为20%。在以上工艺条件下,炉渣粉末为20 g时Fe_2O_3产量为0.86 g,Fe_2O_3纯度达到93.6%。
[Abstract]:The unquenched high magnesium slag was treated by acid hydrolysis with nitric acid. By adjusting the pH of the slag filtrate, the iron was precipitated and recovered, and the Fe_2O_3 product was prepared. The Fe_2O_3 was qualitatively analyzed by infrared spectroscopy. The composition of slag and the content of Fe_2O_3 were analyzed by X-ray fluorescence spectrometer. The mass fraction of nitric acid and the temperature of acidolysis were systematically investigated. The effect of pH and sodium hydroxide mass fraction on the recovery and utilization of Fe in slag was studied. The results showed that the recovery and utilization process was feasible. The technological conditions of recovering and utilizing iron from non-quenched high magnesium slag to prepare Fe_2O_3 were as follows: nitric acid. The mass fraction is 60 鈩，

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