Requirements for carbon electrodes are:
- good electrical conductivity: in order to withstand the high current density required by the metallurgical process;
- good thermal conductivity: to minimize the temperature differences inside the electrodes when in use and, consequently to reduce internal stresses;
- good mechanical strength: to withstand the stresses when in use;
- high level of chemical purity: to avoid polluting the end product;
- reliable joint: to ensure current flow continuity in the electrode column;
- easy mounting: to facilitate and speed up operations for the lengthening of the electrode column;
- accurate machining on the external surface on the joints: to avoid problems when the joint passes through the holding clamps and the contact shoes and to facilitate the current flow from one electrode to the following one.
Peculiar characteristics of carbon electrodes for silicon metal production are:
- carry large amounts of electrical current
- withstand very high temperatures
- keeping good mechanical properties under above-described circumstances
Technical specification:
|
Type |
S grade |
G grade |
|
Bulk density g/cm3 (min) |
1,58 |
1,58 |
|
Resistivity µΩ·m (max) |
35 |
30 |
|
Ash content % (max) |
4,5 |
4,0 |
|
Compressive strength MPa (min) |
6,5 |
6,5 |
|
CTE 10-6/℃ (max) |
4,5 |
4,0 |
|
Diameter mm |
Nominal Length |
Standard Length |
Short Length |
||
|
max |
min |
max |
min |
||
|
Φ700/Φ780/Φ800/Φ850 |
1950 |
+50 |
-50 |
-50 |
-200 |
|
Φ870/Φ900/Φ920/Φ960 |
1950 |
+50 |
-50 |
-50 |
-225 |
|
Φ960/Φ1020/Φ1060/Φ1140 |
2550 |
+100 |
-100 |
-100 |
-275 |
|
Φ1060/Φ1140/Φ1272 |
2850 |
+100 |
-100 |
-100 |
-275 |
|
Diameter (mm) |
S-Grade Carbon Electrode |
G-Grade Carbon Electrode |
||
|
Allowable Current Load (A) |
Current Density |
Allowable Current Load (A) |
Current Density |
|
|
700 |
25300 |
6.6 |
29200 |
7.6 |
|
780 |
32500 |
6.6 |
36200 |
7.6 |
|
800 |
33100 |
6.6 |
38100 |
7.6 |
|
850 |
36200 |
6.6 |
41900 |
7.4 |
|
870 |
38000 |
6.4 |
43900 |
7.4 |
|
900 |
40600 |
6.4 |
47000 |
7.4 |
|
920 |
42500 |
6.4 |
49100 |
7.4 |
|
960 |
46300 |
6.4 |
53500 |
7.4 |
|
1020 |
50600 |
6.2 |
57900 |
7.1 |
|
1060 |
54600 |
6.2 |
62600 |
7.1 |
|
1140 |
62200 |
6.1 |
71400 |
7.0 |
|
1146 |
62800 |
6.1 |
72100 |
7.0 |
|
2405 |
66100 |
5.8 |
76300 |
6.7 |
|
1272 |
73600 |
5.8 |
85100 |
6.7 |
|
1321 |
73900 |
5.4 |
84900 |
6.2 |
|
1400 |
80000 |
5.2 |
92300 |
6.0 |
Carbon electrodes are applied for the production of silicon metal as they have peculiar characteristics. our main products are：
graphite electrode(UHP.SHP.HP.RP); carbon electrode; soderberg elecreodeFor more information contact：
TingyYu, Sales Manager
Email:[email protected]
Tel:+86-318-2883050
Fax:+86-318-2883050
Cel:+8618832836236
