Electrode paste
Electrode paste is used for forming continuous self-baking electrodes (Soderberg electrodes) in electrical thermal furnaces in ferrous, non-ferrous metallurgy and chemical industry.
|
Properties |
Units of measurement |
Typical values* |
|
|
Grade |
|
A |
C |
|
Unbaked paste |
|
|
|
|
Coefficient of flowability |
|
1.6-2.8 |
1.8-2.8 |
|
Volatiles |
% |
13 |
13 |
|
Mass percent of iron |
% |
0.50 |
0.50 |
|
Mass percent of silicon |
% |
1.40 |
1.40 |
|
Mass percent of phosphorus |
% |
0.012 |
0.012 |
|
Ash content |
% |
5 |
5 |
|
Baked paste |
|
|
|
|
Bulk density |
g/cm3 |
1.46 |
1.46 |
|
Ash content |
% |
6 |
6 |
|
Rupture strength |
MPa |
2.5 |
2.7 |
|
Real density |
g/cm3 |
1.89 |
1.90 |
|
Compression strength |
MPa |
25 |
26 |
|
Specific electrical resistance |
µОhm•m |
80 |
75 |
|
Heat conductivity |
W/m•K |
2.4 |
2.7 |
The above values are average values and they do not constitute a specification
At the consumer's request the coefficient of flowability can be set within a range from 1.6 to 2.8 with accuracy of ± 0.2, for example Cf=1.8±0.2
The size and shape of electrode paste briquettes depend on the shape of molds:
- small briquettes (SBEP):
|
No. |
Average dimensions, mm |
Average weight, kg |
||
|
1 |
~105 |
~90 |
~70 |
~0.7 |
|
2 |
~75 |
~80 |
~60 |
~0.32 |
- large cylindrical blocks (LBEP):
|
No. |
Designation |
Diameter, mm |
Height, mm |
Average weight, kg |
|
1 |
LBEP dia. 500х850 |
dia. 500±20 |
850+50 |
~270 |
|
2 |
LBEP dia. 600х910 |
dia. 600±20 |
910+50 |
~430 |
|
3 |
LBEP dia. 900х1000 |
dia. 900±30 |
1000+50 |
~1010 |
Geometrical dimensions and weight of SBEP and LBEP blocks (including positioning of two pairs of non-through (blind) holes for gripping blocks with load-lifting mechanisms) depend on the equipment and are not regarded as rejection values. The hollows after shrinkage of the paste during LBEP cooling are not regulated.
SBEP can be shipped in (750±50)kg Big Bags.