<報文>ブラジル国ピティンガ鉱床からの錫尾鉱中のY, YbおよびNbの分布について

概要

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Tailings of the tima ore in Brazil contain a variety of rare metals in various amounts. In the present paper, distributions of Y, Yb and Nb in the products obtained from the tailings oftin ore by electrostatic and magnetic separations were determined. The coarse xenotime, which was concentrated from tailings of the tin ore as a primary product, consisted of xenotime, zircon, ferrocolumbite and hematite and their analyses were 40%, 20%, 10%, 7% and 3%, respectively. The xenotime and zircon were concentrated into non-conducting part of the products by the electrostatic separation treatment. It was found that the xenotime examined in the present study mainly contained Y, Yb, P, Er and Dy and the mol ratio of Y and Yb was Y_2O_3 : Yb_2O_3=4 : 1. The mol ratio of the ZrO_2 and HfO_2 in zircon was 95 : 5. The ferrocolumbite, which contained Nb, was concentrated into the non-conducting part of the products and obtained by magnetic separation as non-magnetics.electrostatic separationrare earth elementrare metaltailingtin oreYYbNbxenotimeferrocolumbite
東北大学の論文
1988-09-30