Graphite article
View Patent ↗One use for irradiated graphite after remediation processing is to recycle it into a new graphite artifact. Examples of such artifacts include an electrode to be used for vitrification of radionucleotides, graphite or carbon articles for uranium processing, a moderator for a HTGR, in particularly a Gen IV HTGR, other types of graphite products for nuclear facilities, charcoal filters, silicon carbide applications, etc. Such graphite artifacts can be formed with up to 20 pph of carbon black, the carbon black is formed from vitrified irradiated graphite. Optionally the graphite artifact may be formed from up to 75 pph of pitch.
1. A graphite artifact comprising 1 to 19 pph of carbon black, the carbon black comprising vitrified irradiated graphite, the artifact having a specific resistance of 8.6 to 6.5 Ω-cm.
2. The graphite artifact of claim 1 having up to 10 pph of the carbon black.
3. The graphite artifact of claim 2 having up to 5 pph of carbon black.
4. The graphite artifact of claim 1 wherein the graphite artifact comprises extruded graphite.
5. The graphite artifact of claim 1 wherein the graphite artifact comprises molded graphite.
6. The graphite artifact of claim 1 wherein the graphite artifact comprises up to 75 pph of pitch.
7. The graphite artifact of claim 6 wherein the graphite artifact comprises up to 50 pph of pitch.
8. The graphite artifact of claim 1 having a CTE of 0.15 to 0.22 ppm/° C.
9. A graphite artifact comprising 1 to 10 pph of carbon black, the carbon black comprising vitrified irradiated graphite, the artifact having a thermal conductivity of 52-90 w/mK.
10. The graphite artifact of claim 9 comprising 1 to 5 pph of carbon black.
11. The graphite artifact of claim 9 wherein the graphite artifact comprises extruded graphite.
12. The graphite artifact of claim 9 wherein the graphite artifact comprises molded graphite.
13. The graphite artifact of claim 9 wherein the graphite artifact comprises up to 75 pph of pitch.
14. The graphite artifact of claim 9 wherein the graphite artifact comprises up to 50 pph of pitch.
15. The graphite artifact of claim 9 having a CTE of 0.15 to 0.22 ppm/° C.
16. A graphite artifact comprising 1 to 9 pph of carbon black, the carbon black comprising vitrified irradiated graphite, the artifact having a specific resistance of 8.6 to 6.5 Ω-cm.
17. The graphite artifact of claim 16 having a thermal conductivity of 52-90 w/mK.