Large size RP graphite electrode
Usage: mainly for melting in submerged arc furnace which are used to make industrial silicon, yellow phosphorous, ferro-alloy, Titania-slag, brown fused alumina and etc. , which can be replaced by similar size of carbon electrode.
Common size: common size: 870/900/1020/1030/1050/1146/1205/1272mm
|
Item |
Unit |
Nominal Diameter (mm) |
|||
|
650-750 |
780-960 |
1005-1310 |
|||
|
resistance |
Electrode |
μΩ.m |
≤12.0 |
≤13.0 |
≤15.0 |
|
Nipple |
≤7.5 |
≤7.5 |
≤7.5 |
||
|
Bending Strength |
Electrode |
MPa |
≥6.0 |
≥5.2 |
≥5.0 |
|
Nipple |
≥13.0 |
≥13.0 |
≥13.0 |
||
|
Elastic Modulus |
Electrode |
GPa |
≤12.0 |
≤12.0 |
≤12.0 |
|
Nipple |
≤14.0 |
≤14.0 |
≤14.0 |
||
|
Bulk Density |
Electrode |
g/cm3 |
≥1.58 |
≥1.58 |
≥1.56 |
|
Nipple |
≥1.68 |
≥1.68 |
≥1.68 |
||
|
Ash |
Electrode |
% |
≤0.5 |
≤0.5 |
≤0.4 |
|
Nipple |
≤0.5 |
≤0.5 |
≤0.4 |
||
|
CTE |
Electrode |
10-6/℃ |
≤2.9 |
≤2.9 |
≤2.9 |
|
Nipple |
≤2.8 |
≤2.8 |
≤2.8 |
||
Graphite electrode operation current
|
Electrode Diameter (mm) |
Allowed Max Current Load (A) |
Allowed Max Current Density (A/cm2) |
|
650 |
43100 |
13.0 |
|
700 |
46200 |
12.0 |
|
780 |
57300 |
12.0 |
|
800 |
60300 |
12.0 |
|
850 |
62400 |
11.0 |
|
900 |
69900 |
11.0 |
|
960 |
72400 |
10.0 |
|
1005 |
79200 |
10.0 |
|
1020 |
73500 |
9.0 |
|
1060 |
79400 |
9.0 |
|
1100 |
85500 |
9.0 |
|
1146 |
92800 |
9.0 |
|
1272 |
101600 |
8.0 |
|
1310 |
107770 |
8.0 |
![Second slide [1140x500]](/uploads/PicturesManage/20181019/water_a67e792a41072b388883bfabd7e03dfa.jpg)
