Critical high-temperature zone in direct reduction shaft furnaces where iron ore is chemically reduced to metallic iron using reducing gases.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Pressure Range | 2-5 bar | |
| Residence Time | 4-8 hours | |
| Metallization Target | 92-96% | |
| Height/Diameter Ratio | 3:1 to 5:1 | |
| Operating Temperature | 800-1050°C | |
| Reduction Gas Composition | H2: 55-75%, CO: 15-30%, CO2: <5% |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A practical evidence checklist for RFQ preparation and supplier evaluation.
CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.
Manufacturer profiles associated with Reduction Zone.
Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.
The reduction zone specifically maintains 800-1050°C temperatures for solid-state chemical reduction without melting, unlike melting zones in blast furnaces or heating zones that only preheat materials.
H2/CO ratios directly control reduction kinetics and heat balance. Higher H2 increases reaction rates but requires more heat input, while CO provides exothermic heat but can cause carbon deposition if unbalanced.
Regular refractory inspection for thermal spalling, gas distributor cleaning to prevent clogging, temperature profile monitoring, and seal integrity checks to maintain reducing atmosphere.
Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.