This paper provides microstructural, microchemical, and bulk X-ray diffraction information for a zinc-in-titania waste form for immobilizing rare-earth oxide (REO_x) fission products recovered through precipitation from electrochemical salt wastes. This waste form can be used to immobilize REO_x at loadings as high as 40 mass% in a chemically durable matrix consisting of glass-bonded minerals including Zn₂TiO₄ as well as RE-containing phases of REO_x, RE₂Ti₂O₇, and REPO₄ (monazite). Chemical durability data is also provided, and comparisons are drawn between this waste form and one made using a similar process with half the REO_x loading.

本文提供了二氧化钛锌废料的微观结构，微观化学和大量X射线衍射信息，用于固定从电化学盐废料中沉淀回收的稀土氧化物（REO _x）裂变产物。这种废物形式可用于将REO _x固定在高达40质量％的化学耐久性基体中，该基体由玻璃结合的矿物组成，包括Zn ₂ TiO ₄以及REO _x，RE ₂ Ti ₂ O的含RE相₇和REPO ₄（独居石）。还提供了化学耐久性数据，并比较了这种废物形式与使用类似方法（一半REO _x负载量）制成的废物形式。