Method for converter blow control
US4416691A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1982 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Mar 25, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C5/30
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for converter blow end-point control which comprises carrying out waste gas analyses on a continuous or intermittent basis in a final stage of the blow and, based on decarburization rate data (waste gas information) obtained from said waste gas analysis, determining the end-point of the blow where the carbon content of the bath equals a target carbon content. The method is characterized by the use of the decarburization rate equation: ##EQU1## which is a differential equation taking account of the delay time (.tau.) of said waste gas information which is a period of time from the time-point of occurrence of a decarburization reaction in the converter till the time when it is detected as said decarburization rate data, and an equation: EQU b'=g(b) which is a functional equation for increasing the predictability of carbon content of the bath at the end-point of the blow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.