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METHOD FOR SEPARATING RARE-EARTH ELEMENTS FROM IRON, AND RARE-EARTH ELEMENT-CONTAINING SLAG

机译:从铁中分离稀土元素的方法以及含稀土元素的渣

摘要

The present invention provides a separation method of a rare earth element and iron including: forming alkali silicate slag incorporating a rare earth element, by melting a rare earth-iron-containing material together with an alkali silicate flux in a metallic silicon melt or an iron-silicon alloy me and separating rare earth-containing slag from an iron-silicon alloy, in which volatilization of alkaline components contained in the flux is suppressed by performing heating and melting under an oxidizing atmosphere, and the rare earth-containing slag having a SiO2/Na2O molar ratio of 2.1 or less is formed.
机译:本发明提供一种稀土元素和铁的分离方法,该方法包括:通过将含稀土铁的材料与碱金属硅酸盐熔剂一起在金属硅熔体或铁中熔融而形成掺入稀土元素的碱金属硅酸盐炉渣。 -硅合金熔体;从铁硅合金中分离含稀土的炉渣,其中通过在氧化气氛下进行加热和熔融来抑制焊剂中所含的碱性成分的挥发,并且使具有SiO 2的含稀土的炉渣形成的 / Na 2 O摩尔比为2.1或更小。

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