AirGreen™
AirGreen™ is taphole clay used in the taphole of blast furnaces during the ironmaking process.
Compared to conventional tar-based and resin-based taphole clay, AirGreen™ offers low odor, low free phenol, and low aldehyde emissions, making it less harmful to human health.
Presentation Materials and inquiries for AirGreen™
AirGreen™ is taphole clay with low toxicity because it does not contain coal tar.
Coal tar contains polycyclic aromatic hydrocarbons (PAHs), which are recognized as carcinogenic by the IARC.
Comparison of Regulatory and Legal Classifications
| Category | Coal Tar | AirGreen binder |
|---|---|---|
| Pollutant Release and Transfer Register (PRTR) System | Applicable | Not applicable |
| Poisonous and Deleterious Substances Control Act | Not applicable | Not applicable |
| Fire Service Act | Category IV Hazardous Materials – Class 3 Petroleum (Non-water-soluble) |
Designated Combustible Material / Flammable Liquid |
| Water Pollution Prevention Act・Air Pollution Control Act・Soil Contamination Countermeasure Act | Applicable | Not applicable |
| International Transport Regulations – UN3082 / IMDG Code / IATA DGR | UN3082 / Class 9, Marine Pollutant (IMDG) ; MARPOL Annex II/IBC : Category X (Coal Tar) | Not applicable |
| IARC Classification Groups | Group 1 (Carcinogenic to humans) |
Group 3 (Not classifiable) |
AirGreen™ features low free phenol and low aldehyde emissions, resulting in significantly reduced odor compared to conventional resin-based taphole clay.
At around 70℃, the airborne phenol concentration for AirGreen™ is below the detection limit of 0.3 ppm, whereas conventional resin-based taphole clay exceed the upper detection limit of 25.0 ppm.
Evaluation of Volatile Phenol Concentration Using
Phenol Detector Tube (Kitagawa Method)
| AirGreen | Resin taphole clay | |
|---|---|---|
| Phenol Detector Tube Reading / ppm | 0.3> | >25.0 |
Presentation Materials and inquiries for AirGreen™
Technical papers
Presentation Materials and inquiries for AirGreen™
