Behavior of mercury release from iron ores during temperature-programmed heat treatment in air
Behavior of mercury release from iron ores during temperature-programmed heat treatment in air
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DOI：
10.1007/s11356-021-17002-7
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发表时间：
2021-10
影响因子：
5.8
通讯作者：
Javzandolgor Bud;Y. Mochizuki;N. Tsubouchi
中科院分区：
文献类型：
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作者：
Javzandolgor Bud;Y. Mochizuki;N. Tsubouchi
本文主要采用在线监测的方法，研究了铁矿石在空气中程序升温热处理（TPHT）时汞的释放行为。TPHT过程中汞的释放行为很大程度上取决于所处理矿石的类型，包括演化形态、hg0和Hg2+，以及在950℃以下保持热稳定的形态。此外，模型汞化合物的TPHT实验表明，在考虑的铁矿石中存在几种类型的汞形式（HgCl2、Hg2Cl2、HgS、HgO、HgSO4和伴生矿物Hg）。本研究结果为设计一种有效的脱除铁矿石中汞和气态汞的方法提供了见解。
The behavior of Hg release from iron ores during temperature-programmed heat treatment (TPHT) in air is studied, primarily using an online monitoring method. The Hg release behavior during TPHT depends significantly on the type of ore being processed, involving the evolved forms, Hg0and Hg2+, and those that remain thermally stable up to 950 °C. Furthermore, TPHT experiments for model Hg compounds suggest the presence of several types of Hg forms (HgCl2, Hg2Cl2, HgS, HgO, HgSO4, and associated mineral Hg) in the considered iron ores. The findings of this study provide insights for designing an efficient method for the removal of Hg from iron ore and gaseous Hg.