CALCINATION OF HIGH LEVEL ATOMIC WASTES AS A STEP IN ULTIMATE DISPOSAL
Technical Report
·
OSTI ID:4271986
Safe and permanent disposal of high-level wastes includes two basic objectives: immobilization of the fission products by incorporation in stable solids,and reduction of the stored product to the minimum practical volume. Calcination is a desirable first step in the processing of radioactive waste solutions containing relatively large amounts of aluminum nitrate and zirconium fluoride because thermal decomposition and steam hydrolysis convert these substances to insoluble solid oxides whi h, after a preliminary leaching to remove the unfixed portion of the activity are suitable for burial. Over the past four years a calcining apparatus of the rotary ball kiln type with dust controlled by condensattion and absorption of the off-gases has been developed at Brooknaven National Laboratory. Calcination in rotary ball kilns appears to be entirely practical with respect to product quallty, mechnical design, corrosion, off-gas volume, and dust control. (auth)
- Research Organization:
- Brookhaven National Lab., Upton, N.Y.
- NSA Number:
- NSA-13-012239
- OSTI ID:
- 4271986
- Report Number(s):
- BNL-535
- Country of Publication:
- United States
- Language:
- English
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