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首页> 外文会议>TMS annual meeting exhibition;International symposium on high-temperature metallurgical processing >The Extraction of Zinc from Zinc Ferrite by Calcified-Roasting and Ammonia-Leaching Process
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The Extraction of Zinc from Zinc Ferrite by Calcified-Roasting and Ammonia-Leaching Process

机译：钙焙烧氨浸提锌铁氧体中锌的提取

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Zinc ferrite (ZnFe_2O_4), one of the major forms of zinc in Electric Arc Furnace (EAF) dust and zinc leaching residue, is very difficult to chemically dissolve in either acidic or alkaline solutions. In spite of the zinc resources in the Electric Arc Furnace (EAF) dust and zinc leaching residue are abundant, there is no mature utilization technology. This situation not only causes the waste of resources, but also produces the harm to the environment. In the paper, the basic principle of this process has been established by revealing the phase equilibria in the CaO-Fe_2O_3-ZnO system, where Ca_2Fe_2O_5 can be in equilibrium with ZnO rather than ZnFe_2O_4 at higher CaO region. It has also been demonstrated that the formed ZnO can be solved by ammonia-leaching and Ca_2Fe_2O_5 keep in solid residue, which can be used as a flux for steel refining.
机译：铁酸锌（ZnFe_2O_4）是电弧炉（EAF）粉尘和锌浸出残余物中锌的主要形式之一，很难化学溶解在酸性或碱性溶液中。尽管电弧炉（EAF）中的锌资源丰富，但粉尘和锌浸出残留物仍然很丰富，目前尚没有成熟的利用技术。这种情况不仅造成资源浪费，而且对环境造成危害。本文通过揭示CaO-Fe_2O_3-ZnO体系中的相平衡建立了该过程的基本原理，其中Ca_2Fe_2O_5可以在较高CaO区域与ZnO而不是ZnFe_2O_4处于平衡状态。还证明了形成的ZnO可以通过氨浸法溶解，并且Ca_2Fe_2O_5保持在固体残渣中，可以用作炼钢的助熔剂。

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