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Large-size graphite electrodes (φ780-φ1400mm) are widely used in mine thermoelectric furnaces, and the current density can reach 12-15A/square centimeter. Only a few companies in China have the strength to produce large-size graphite electrodes.
Large-size graphite electrodes (φ780-φ1400mm) are widely used in mine thermoelectric furnaces, and the current density can reach 12-15A/square centimeter. Only a few companies in China have the strength to produce large-size graphite electrodes.
| ITEM | RP 250mm/ RP150 | HP 200/250/300/350/400mm | HP 450mm | UHP 450/500/550/600/650/700mm | ||||
| Electrode | Nipple | Electrode | Nipple | Electrode | Nipple | Electrode | Nipple | |
| Electrical Resistance Max. (µΩ-m) | 8 | 6 | 6.5 | 4 | 5.8 | 3.8 | 5 | 3.5 |
| Flexural Strength Min. (Mpa) | 11 | 14 | 11 | 20 | 14 | 25 | 14 | 25 |
| Elastic Modulus Max. (Gpa) | 9.3 | 13.7 | 12 | 17 | 13 | 18 | 12 | 18 |
| Bulk Density Min. (g/cm3) | 1.6 | 1.72 | 1.7 | 1.78 | 1.7 | 1.8 | 1.7 | 1.8 |
| C.T.E (100-600)℃ Max. | 2.7 | 2.5 | 2.4 | 2.2 | 1.4 | 1.2 | 1.3 | 1 |
| Ash (%) Max. | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Nominal Diameter mm | Max. Current Load A | Max Current Density A/cm2 |
| 960 | 72350 | 10 |
| 1020 | 73500 | 9 |
| 1060 | 79380 | 9 |
| 1100 | 85490 | 9 |
| 1146 | 92780 | 9 |
| 1197 | 95600 | 8.5 |
| 1250 | 104260 | 8.5 |
| 1272 | 107960 | 8.5 |
| 1305 | 113630 | 8.5 |
| 1321 | 109590 | 8 |
| 1400 | 123090 | 8 |
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