Full Content is available to subscribers

Subscribe/Learn More  >

Iron Phosphate Glass as Optional Final Waste Matrix for High-Level Radioactive Waste

[+] Author Affiliations
M. Sazarashi, K. Maruyama, S. Ono, K. Suzuki

Institute of Research and Innovation (IRI)

T. Fukui, T. Ishinomori, N. Kubota, Y. Endo

Ishikawajima-Harima Heavy Industries Company, Ltd. (IHI), Koto-ku, Japan

Paper No. ICEM2003-4529, pp. 1581-1584; 4 pages
  • ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation
  • 9th ASME International Conference on Radioactive Waste Management and Environmental Remediation: Volumes 1, 2, and 3
  • Oxford, England, September 21–25, 2003
  • Conference Sponsors: Nuclear Engineering Division and Environmental Engineering Division
  • ISBN: 0-7918-3732-7 | eISBN: 0-7918-3731-9
  • Copyright © 2003 by ASME


The study investigated experimentally a basic capability of iron phosphate glass (IPG) matrix to vitrify the high level radioactive waste (HLW) in the commercial reprocessing. IPG matrix is a mixture of iron oxide and phosphorus oxide, and Fe/P mole ratio is one of important conditions to form a vitrified product with good chemical and physical properties. Moreover, the corrosion of IPG matrix is more rigorous than that of borosilicate glass matrix, and an appropriate furnace material should be selected for the durability of equipments. The composition of HLW used in experiments was simulated, based on that of HLW generating from commercial reprocessing for a standard spent fuel of light water reactor. Dependence of Fe/P mole ratio on both crystallinity of product and loading of simulated HLW was investigated. At Fe/P mole ratios of 0.43 and 0.33, crystals of Nd and Zr phosphate, appeared in a part of Fe-P matrix zone of vitrified products containing 30wt% of the HLW. The products at Fe/P ratios of 0.18 and 0.27 become a homogeneous glassy state with increasing solubility of crystals of Nd and Zr phosphate. It means that the low Fe/P mole ratio is better to form the vitrified product of high waste loading. Concerned with water resisting property, products vitrified at Fe/P = 0.18,0.23 have larger amount of dissolution rates than that at Fe/P = 0.33,0.43. An appropriate amount of Fe needs to form vitrified product of IPG with good water resisting property, although the homogeneity in micro-structure of the product slightly decreases. Fe/P mole ratio in IPG, 0.3 is an appropriate condition to form vitrified product containing HLW with less dissolution and leaching rate. It is totally concluded that Fe/P mole ratio in IPG, 0.3 is an appropriate condition to form vitrified product containing HLW with less dissolution and leaching rate. This study focused on a special material, ZrB2 , which has electric and heat conduction equivalent to iron metal in order to estimate an adoption of furnace material. The corrosion rate of ZrB2 in the melting of IPG matrix was as low as that of Alumina, and there was no rigorous corrosion on the surface of crucible. It was shown that ZrB2 is able to apply a furnace material for IPG vitrification with an induction-heated ceramic melter.

Copyright © 2003 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In