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首页> 外文会议>32nd Annual Hydrometallurgy Meeting and International Conference on the Practice and Theory of Chloride/Metal Interaction, Vol.2, Oct 19-23, 2002, Montreal, Quebec, Canada >A Contribution to the Study of Iron Removal from Chloride Leach Solutions
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A Contribution to the Study of Iron Removal from Chloride Leach Solutions

机译：为研究氯化物浸出液中铁的去除做出的贡献

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摘要

The removal of iron from chloride leach solutions does not constitute yet a well-established technology, as it happens with iron removal from sulphate solutions. However, as chloride hydrometallurgy grows in importance, some thorough studies on iron removal from chloride environments - with more emphasis on practical applications - become more and more essential. In this paper, we report on the removal of iron from iron chloride solutions produced upon leaching of steel making (EAF) dust. To this end, two techniques were used: (ⅰ) oxidative hydrolysis of FeCl_2 with and without any seed at 95℃, (ⅱ) hydrolysis of FeCl_3 by controlled crystallisation with and without any seed at 95℃. Akaganeite (β-FeOOH) was the main crystalline phase identified in the product obtained by controlled crystallisation from FeCl_3, but, surprisingly, goethite (α -FeOOH) was the product obtained upon oxidative hydrolysis of FeCl_2. It was also found that the latter product was less contaminated by chloride. The practical implications of these findings are further discussed in the paper.
机译：从氯化物浸出溶液中除去铁还不是一种成熟的技术，因为从硫酸盐溶液中除去铁时会发生这种情况。但是，随着氯化物湿法冶金的重要性日益提高，对从氯化物环境中除铁的一些深入研究（更侧重于实际应用）变得越来越重要。在本文中，我们报告了从浸提炼钢（EAF）粉尘产生的氯化铁溶液中去除铁的方法。为此，使用了两种技术：（ⅰ）在有或没有晶种的情况下，在95℃下氧化FeCl_2的氧化；（ⅱ）在有和没有晶种的情况下，在95℃下通过控制结晶对FeCl_3的水解作用。赤铁矿（β-FeOOH）是通过从FeCl_3受控结晶获得的产物中鉴定出的主要结晶相，但令人惊讶的是，针铁矿（α-FeO​​OH）是FeCl_2的氧化水解获得的产物。还发现后一种产品较少受氯化物污染。这些发现的实际含义将在本文中进一步讨论。

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