Low-sulphur petroleum coke produced by coking of residual straight-run, cracking, pyrolysis oil refinery products and oil extracts in cubes and delayed coking units and intended for use in the electrode, aluminium, abrasive and other industries.
There are 7 grades of coke, which differ both in production technology and final properties:
KNPS-SM – Production of carbon construction materials for special purposes;
KNPS-KM – Production of carbon construction materials;
KNG -Graphite product manufacturing ;
KZG – Graphite product manufacturing;
KZA – Aluminium production;
KNA – Aluminium production;
KZO – Production of abrasives and other products.
| Indicators | KNPS-SM | KNPS-KM | KNG | KZG | KZA of the highest grade | KZA Class I | CNA | KZO |
|---|---|---|---|---|---|---|---|---|
| Mass fraction, %, not more than: | ||||||||
| Total moisture | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 |
| Volatile substances | 6.0 | 6.0 | 8.0 | 9.0 | 7.0 | 9.0 | 8.0 | 11.5 |
| Sulfur | 0.2 | 0.4 | 1.0 | 1.0 | 1.2 | 1.5 | 1.0 | 1.5 |
| Ash content, % | 0.15 | 0.3 | 0.5 | 0.6 | 0.4 | 0.6 | 0.5 | 0.8 |
| Mass fraction of trifles, %, not more than: | ||||||||
| Pieces smaller than 25 mm | 4.0 | 4.0 | – | – | – | – | – | – |
| Pieces smaller than 8 mm | – | – | 10 | 10 | 8 | 10 | 10 | – |
| Abrasion, %, max | 9.0 | 11.0 | – | – | – | – | – | – |
| Actual density | 2.04- | 2.04- | 2.08- | 2.08- | 2.10- | 2.08- | 2.08- | – |
| After calcination at 1300 °C for 5 h, g/cm³ | 2.08 | 2.08 | 2.13 | 2.13 | 2.13 | 2.13 | 2.13 | – |
