レアメタル資源に関する研究(II) : Serra NegraおよびTapira, Brasil産anatase

概要

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The deposits of both Serra Negra and Tapira in north of Sao Paulo, Brasil on the boundary between the States of Minas Gerais and Sao Paulo. Anatase from Serra Negra was formed as a mixture of anatase (TiO_2) and quartz (SiO_2). Some minerals such as apatite, perovskite, titanate, were identified from the electron microprobe studies. Anatase from Tapira was formed as a mixture of anatase and hematite (Fe_2O_3). Titanate and ilmenite were also identified. Both ore contained a high content of thorium with less amount of uranium. These ores show stable behavior in the TG-DTA studies but the metamictizatin by the α radiation from uranium and thorium seems to have occurred. The dissolution of the ore in HCl and H_2SO_4 were conducted and finally the evaluation of the anatase as Ti resources was discussed from the metallurgical point of view.anatasetitaniumuraniumthoriumapatiteperovskiteilmenitetitanatemetamictizationtransformationmetallurgyrare metal
東北大学の論文
1986-09-30