IRON PHOSPHATE GLASSES: AN ALTERNATIVE FOR VITRIFYING CERTAIN NUCLEAR WASTES

Day, Delbert E. ; Ray, Chandra S. ; Kim, Cheol-Woon ; Zhu, Dongmei

University of Missouri--Rolla

关键词: Corrosion;    Radioactive Wastes;    12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities;    Sodium;    Electrodes;   

DOI  :  10.2172/834748
RP-ID  :  EMSP-73976-2003
RP-ID  :  FG07-96ER45618
RP-ID  :  834748

美国|英语

来源: UNT Digital Library

【 摘 要 】

During the past year, iron phosphate glasses containing the following three types of nuclear waste, as recommended by the Tank Focus Area (TFA) group, have been investigated. (1) a high sodium/sulfate Hanford Low-Activity Waste (LAW) (2) a High Chrome Waste (HCW) at Hanford, and (3) a Sodium Bearing Waste (SBW) at Idaho National Engineering and Environmental Laboratory (INEEL) Over three hundred trial melts, ranging in size from 50 g to more than 10 kg, have been evaluated. The experimental work consisted of (1) evaluating the melting behavior and characteristics, (2) measurement of the viscosity and electrical conductivity of promising melts over their melting range, (3) determining the chemical durability by the PCT and VHT methods of both glassy and partially crystallized iron phosphate wasteforms, (4) determining the solubility limit for chrome oxide in selected iron phosphate melts, (5) examining the feasibility of melting iron phosphate glasses by Cold Crucible Induction melting (CCIM), Hot Crucible Induction Melting (HCIM), and Microwave Melting, (6) and measuring the corrosion of Inconel 690 and 693, potential electrode materials, in an iron phosphate melt. In the past year, the results of the above experimental work have been described in eight technical papers and reports that have been submitted for publication.