Safe disposal of nuclear waste is key to sustainable use of nuclear energy. Exploring safe and reliable disposal methods for nuclear waste has become a research hotspot. The phase distribution of uranium in matrices obtained by co-melting basalt and uranium-containing Al₂O₃ was examined for the development of a potential material for radioactive waste immobilization. The co-melting of basalt with UO₃-containing Al₂O₃ produced matrices containing glass, plagioclase, and spinel as major phases. The highest uranium content (97 mass % UO₃) was observed on the non-dissolved fragment of the Al₂O₃ grains. The titanium-containing complex oxide phase, supposedly, ilmenite, contained up to 62 mass % UO₃. The glass phase exhibited an uneven distribution of uranium, with its content ranging ~ 5 to ~ 10 mass % UO₃. Data on the leaching of uranium into H₂O from the co-melt of basalt and UO₃-containing Al₂O₃ were obtained.

核废料的安全处置是核能可持续利用的关键。探索安全可靠的核废料处置方法已成为研究热点。检查了通过共熔玄武岩和含铀的 Al ₂ O ₃获得的基质中铀的相分布，以开发用于放射性废物固定的潜在材料。玄武岩与含UO ₃的Al ₂ O ₃的共熔产生含有玻璃、斜长石和尖晶石作为主要相的基质。在 Al ₂ O ₃的未溶解碎片上观察到最高的铀含量 (97 质量 % UO ₃ )谷物。含钛复合氧化物相，推测为钛铁矿，含有高达62质量％的UO ₃。玻璃相表现出铀的不均匀分布，其含量范围为~5 至~10 质量% UO ₃。获得了铀从玄武岩和含UO ₃的 Al ₂ O ₃的共熔体中浸出到 H ₂ O 中的数据。