PROCESS FOR THE PREPARATION OF MODERATOR GRAPHITE FOR USE IN NUCLEAR REACTORS
Patent
·
OSTI ID:4037092
A process is given for preparing reactor grade graphite from petroleum coke. In this process, the coke is ground and worked up with a binder to form shaped pieces which are graphitized at 2500 to 3000 deg C and then impregnated with a densifier to fill the pores. The impregnated pieces are again subjected to heat treatment at 2500 to 3000 deg C, resulting in dense shaped products. The binder and densifier are prepared from petroleum distillates (preferably those subjected to cracking treatment) by treating with an oxygen-containing gas at 150 to 400 deg C until the Ring and Ball softening point is 80 and 70 deg C for the binder and densifier, respectively. Volatiles remaining in the ireated petroleum distillates should be removed by distillation before the graphitizing treatment. Three examples of binder and densifier preparation are given. (D.L.C.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-016029
- OSTI ID:
- 4037092
- Report Number(s):
- GB 862221
- Country of Publication:
- United Kingdom
- Language:
- English
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