Table 4.
Quality specifications for commercial reducing agents required by Befesa Zinc Aser S.A. company 2013.
| Material | Parameter | Befesa Zinc Aser Technical Specifications (wt %) | Specifications on Dry Basis (wt %) * |
|---|---|---|---|
| Metallurgical coke | Granulometry | >10 mm: ≤20% <2 mm: ≤40% on daily sample | – |
| Dry ash | ≤20% on monthly sample | ≤20% | |
| Moisture | ≤20% on daily sample | – | |
| Volatile matter | ≤7% on monthly sample | ≤8.75% | |
| Sulfur | ≤3% on monthly sample | ≤3.75% | |
| Petroleum coke | Granulometry | <2 mm: >30% >10 mm: ≤20% on diary sample | – |
| Dry ash | ≤20% on monthly sample | ≤20% | |
| Moisture | ≤20% on daily sample | – | |
| Volatile matter | ≤15% on monthly sample | ≤18.75% | |
| Sulfur | ≤3% on monthly sample | ≤3.75% | |
| Anthracite | Granulometry | <2 mm: >30% >10 mm: ≤20% on diary sample | – |
| Dry ash | ≤20% on monthly sample | ≤20% | |
| Moisture | ≤20% on daily sample | – | |
| Volatile matter | ≤7% on monthly sample | ≤8.75% | |
| Sulfur | ≤3% on monthly sample | ≤3.75% |
* Calculated considering a moisture content of 20 wt % (maximum permitted by Befesa).