Method for controlling a smelting reduction process
US6273931A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2000 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Feb 4, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/134
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Method for controlling a smelting reduction process, in particular a cyclone converter furnace process for producing pig iron, characterized in that one: PA1 measures the carbon fraction C in the off-gas in the form of CO and Co.sub.2 O; PA1 measures the hydrogen fraction H.sub.2 in the off-gas in the form of H.sub.2 and H.sub.2 O; PA1 determines the C/H.sub.2 ratio in the off-gas; PA1 compares the C/H.sub.2 ratio thus determined in the off-gas against the C/H.sub.2 ratio prevailing for the coal being supplied, and PA1 adjusts the coal supply based on the difference found in the C/H.sub.2 ratios in the off-gas and the coal being supplied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.