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首页> 外文期刊>Materials transactions >Phase equilibrium between Ni-S melt and FeO{sub}x-SiO{sub}x or FeO{sub}x-CaO based slag under controlled partial pressure
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Phase equilibrium between Ni-S melt and FeO{sub}x-SiO{sub}x or FeO{sub}x-CaO based slag under controlled partial pressure

机译：Ni-S熔体与FeO {sub} x-SiO {sub} x或FeO {sub} x-CaO基炉渣在受控分压下的相平衡

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摘要

To provide thermodynamic data for converting the nickel matte to liquid nickel, an experimental study was conducted in the phase equilibrium between the Ni-S alloy and the FeO{sub}x-SiO{sub}2 or FeO{sub}x-CaO based slag in a magnesia crucible at 1773 K under controlled p{sub}(SO{sub}2) of 10.1 kPa and p{sub}(O{sub}2) in a range between 5.1 × 10{sup}(-3) and 1.6 Pa by using CO-CO{sub}2-SO{sub}2 gas mixtures. The solubility of nickel in these slags at p{sub}(O{sub}2) of 1.6 Pa, above which precipitation of a FeO{sub}x-NiO solid solution was anticipated, was found to be 10.1 and 20.3 mass% for the FeO{sub}x-SiO{sub}2 and FeO{sub}x-CaO based slags, respectively. The contents of iron, sulfur and oxygen in the nickel melt equilibrated with these slags were 2, 3 and 0.5 mass% for the FeO{sub}x-SiO{sub}2 based slag and 1, 3 and 0.5 mass% for the FeO{sub}x-CaO based slag, respectively. The dissolutions of nickel and sulfur in the slags were discussed on the basis of distribution ratio and sulfide capacity, respectively.
机译：为了提供将哑光镍转化为液态镍的热力学数据，在Ni-S合金与FeO {sub} x-SiO {sub} 2或FeO {sub} x-CaO基的相平衡中进行了实验研究。在17.1 kPa的受控p {sub}（SO {sub} 2）和p {sub}（O {sub} 2）的受控范围内，镁砂坩埚在1773 k的炉渣在5.1×10 {sup}（-3）之间通过使用CO-CO {sub} 2-SO {sub} 2气体混合物可达到1.6 Pa。在p {sub}（O {sub} 2）为1.6 Pa的条件下，镍在这些炉渣中的溶解度为10.1和20.3质量％，据预测，高于该溶解度，FeO {sub} x-NiO固溶体会析出。基于FeO {sub} x-SiO {sub} 2和FeO {sub} x-CaO的炉渣。用这些炉渣平衡的镍熔体中的铁，硫和氧的含量对于FeO {sub} x-SiO {sub} 2基炉渣为2、3和0.5质量％，对FeO为1、3和0.5质量％分别基于{sub} x-CaO的炉渣。根据分布比和硫化物容量分别讨论了镍和硫在炉渣中的溶解情况。

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