Coal Tar Pitch
liquid and solid
|
Quality Index |
Max |
|
|
1. |
Ash, % |
0,13 |
|
2. |
Softening point, (Mettler), °C |
108,1 |
|
3. |
Weight fraction of substances insoluble in toluene,% |
34,0 |
|
4. |
Weight fraction of substances insoluble in quinoline,% |
12,0 |
|
5. |
Coke residual, % |
57,0 |
|
6. |
Density, gr / cm3 |
1,320 |
|
7. |
Weight fraction of sulphur, % |
0,51 |
|
8. |
Weight fraction of natrium, ppm |
160 |
|
9. |
Weight fraction of calcium, ppm |
77 |
|
№
|
The index naming |
Norm for the grade |
Actually |
|||
|
KPI-1 |
KPI-2 |
KPI-3 |
||||
|
1 |
Ash content, %, not more than |
0.3 |
0.3 |
0.5 |
0.28 |
|
|
2 |
Mass fraction of sulphur, %, not more than |
0.3 |
0.7 |
0.7 |
0.48 |
|
|
3 |
Mass fraction of moisture, %, not more than |
3 |
3 |
3 |
5.2 |
|
|
4 |
Content of volatile matters, %, not more than |
0.8 |
0.8 |
0.8 |
0.46 |
|
|
5 |
Mass fraction of sodium oxid, %, not more than |
0.06 |
0.06 |
0.06 |
0.04 |
|
|
6 |
Specific electric resistance, Ohm * m, not more than |
600 * 10 ~6 |
515 * 10 -6 |
|||
|
7 |
Mass fraction of chunks in the size less than 25 mm, %, not more than |
10 |
10 |
10 |
9.3 |
|
