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UHP Dia200mm graphite electrodes for making pure silicon
High Conductivity Carbon Graphite Electrodes with Nipples
Graphite electrodes are mainly made of petroleum coke and needle coke as raw materials and coal pitch as a binding agent. They are made through calcination, batching, kneading, pressing, roasting, graphitization and machining. They release electric energy in the form of arc in an electric arc furnace. Conductors that heat and melt the charge can be divided into ordinary power graphite electrodes, high power graphite electrodes and ultra-high power graphite electrodes according to their quality indicators.
Features 1. Thermal stability: According to the quench acute thermal using conditions of graphite crucible, we will specially design the production procedure, so as to ensure the reliability of product quality. 2. Corrosion resistance: Even and fine basic design will delay the erosion of crucible. 3. Impact resistance: Graphite crucible can bear high thermal impact, so any process can be carried out. 4. Acid resistance: The adding of special materials will greatly improve the quality of crucible, especially its index of acid resistance., and will prolong the service life of graphite crucible. 5. High heat Conduction: High content of fixed carbon ensures the good heat conduction, shorten the time of dissolution, and remarkably reduce the energy consumption.
| Item | Unit | Graphite Electrode | ||||
| RP(mm) | HP(mm) | UHP(mm) | ||||
| φ100-φ600 | φ100-φ800 | φ200-φ500 | φ550-φ800 | |||
| Resistivity | Electrode | μΩm | 7.0-10.0 | 5.8-6.6 | 4.8-5.8 | 4.6-5.8 |
| Nipple | 4.0-4.5 | 3.5-4.0 | 3.5-4.0 | 3.5-4.0 | ||
| Modulus of Rupture | Electrode | Mpa | 8.0-10.0 | 10.0-13.0 | 10.0-14.0 | 10.0-14.0 |
| Nipple | 19.0-22.0 | 20.0-23.0 | 20.0-24.0 | 22.0-26.0 | ||
| Young's Modulus | Electrode | Gpa | 7.0-9.3 | 8.0-12.0 | 9.0-13.0 | 10.0-14.0 |
| Nipple | 12.0-14.0 | 14.0-16.0 | 15.0-18.0 | 16.0-19.0 | ||
| Bulk Density | Electrode | g/cm3 | 1.53-1.56 | 1.64-1.68 | 1.68-1.74 | 1.68-1.74 |
| Nipple | 1.70-1.74 | 1.75-1.80 | 1.78-1.82 | 1.78-1.84 | ||
| CTE (100-600℃) | Electrode | 10-6/℃ | 2.2-2.6 | 1.6-1.9 | 1.1-1.4 | 1.1-1.4 |
| Nipple | 2.0-2.5 | 1.1-1.4 | 0.9-1.2 | 0.9-1.2 | ||
| Ash | % | 0.5 | 0.2 | 0.3 | 0.3 |
| Nominal Diameter | Actual Diameter | Nominal Length(mm) | ||
| mm | Inch | Max(mm) | Min(mm) | |
| 75 | 3 | 78 | 73 | 1000 |
| 100 | 4 | 103 | 98 | 1200 |
| 150 | 6 | 154 | 149 | 1500-1800 |
| 200 | 8 | 205 | 200 | 1500-1800 |
| 225 | 9 | 230 | 225 | 1500-2100 |
| 250 | 10 | 256 | 251 | 1500-2100 |
| 300 | 12 | 307 | 302 | 1500-2100 |
| 350 | 14 | 357 | 352 | 1500-2400 |
| 400 | 16 | 409 | 403 | 1500-2400 |
| 450 | 18 | 460 | 454 | 1500-2400 |
| 500 | 20 | 511 | 505 | 1800-2700 |
| 550 | 22 | 562 | 556 | 1800-2700 |
| 600 | 24 | 613 | 607 | 2100-2700 |
| 650 | 26 | 663 | 657 | 2100-2700 |
| 700 | 28 | 714 | 708 | 2100-2700 |
| 750 | 30 | 765 | 759 | 2400-2700 |
| 800 | 32 | 816 | 810 | 2400-2700 |
The graphite electrode for arc furnaces and ladle refining furnaces for steel industries/steel plant in steel making.
Graphite electrodes will be stored in a clean and dry place. It can be used both indoors and outdoors. Whether indoors or outdoors, the goods will be loaded and transported away as soon as possible. If it is rainy or cloudy, the electrodes will be covered in advance to prevent damage.
Specification
| Specification | Regular power | High power | Ultra high power | |
| Specific ResistanceμΩ•m(max) | Electrode | 8.5 | 6.5 | 5.5 |
| Nipple | 6.5 | 5.5 | 4.5 | |
| Bulk densityg/cm3(min) | Electrode | 1.54 | 1.63 | 1.68 |
| Nipple | 1.69 | 1.73 | 1.75 | |
| Modulus of rapture Mpa(min) | Electrode | 8.5 | 10.5 | 11.0 |
| Nipple | 15.0 | 16.0 | 20.0 | |
| Yong’s Modulus Gpa(max) | Electrode | 9.3 | 12.0 | 14.0 |
| Nipple | 14.0 | 16.0 | 18.0 | |
| Ash% (max) | Electrode | 0.5 | 0.3 | 0.2 |
| Nipple | 0.5 | 0.3 | 0.3 | |
| CTE(100-600℃)10-6 | Electrode | 2.9 | 2.2 | 1.5 |
| Nipple | 2.8 | 2.0 | 1.4 |
* High density, high temperature resistance, high mechanical strength and strong chemical stability.
* The surface can be treated with anti-oxidation.
* Corrosion resistance, strong acid and alkali resistance.
* Excellent thermal shock resistance, electrical conductivity and thermal conductivity.
* Strong wear resistance and lubricating performance.
* Long service life.
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