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首页> 外文期刊>Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science >Phase Equilibrium and Distribution of Minor Elements between Ni-S Melt and A1_2O_3-CaO-MgO Slag at 1873 K
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Phase Equilibrium and Distribution of Minor Elements between Ni-S Melt and A1_2O_3-CaO-MgO Slag at 1873 K

机译：1873 K下Ni-S熔体与A1_2O_3-CaO-MgO矿渣之间的微量元素相平衡和分布

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摘要

Distribution of nickel and minor elements such as Au, Ag,JFe, Co, Cu, As, and Sb between the Ni-S alloy and the CaO- A1_2O_3 based slag phases in a magnesia crucible was studied at 1873 K. Partial pressure of SO_2 was controlled at 10.1 kPa, while partial pressures of O_2 and S_2 ranged between the point of NiO precipitation (rho o_2 of 10.1 Pa) and the point at which Ni_3S_2 is formed (rho s_2of 4.0 kPa). The nickel content in the slag and the sulfur and oxygen contents in the metal at a given rho o_2 or rho so_2 decrease when the temperature is increased from 1773 to 1873 K. The distribution ratios of iron, cobalt, and copper, defined by (wt pet X in slag)/{wt pet X in alloy}, where X is the minor element in the slag, have larger values than that of nickel, while the values of Au, Ag, Sb, and As are lower than that of nickel. The distribution behavior of nickel and minor elements is discussed based on the concept of oxidic and sulfidic dissolution.
机译：1873 K研究了镁质坩埚中Ni-S合金与CaO-Al_2O_3基炉渣相之间镍和微量元素如Au，Ag，JFe，Co，Cu，As和Sb的分布。研究了SO_2分压将O 2和S_2的分压控制在NiO析出点（rho o_2为10.1 Pa）和形成Ni_3S_2的点（r s_2为4.0 kPa）之间。当温度从1773 K升高到1873 K时，在给定的rho_2或rho so_2下，炉渣中的镍含量以及金属中的硫和氧含量都会降低。铁，钴和铜的分布比由（wt渣中的X）/ {wt合金中的X}，其中X是渣中的微量元素，其值比镍大，而Au，Ag，Sb和As的值比镍小。基于氧化溶解和硫化溶解的概念，探讨了镍和微量元素的分布行为。

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