Process for periodically and pneumatically stirring a bath of molten metal
US4382817A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1981 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Jan 2, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C7/072
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for periodically and pneumatically stirring a bath of molten metal, wherein during the periods in which no stirring effect is required a fluid in gaseous state is injected through injection devices below the surface of the bath of molten metal in an amount sufficient to prevent blockage of the devices, whereas during the periods in which a stirring effect is required a fluid in liquid state which will vaporize quickly upon contact with the liquid metal is injected to provide an optimum amount of mixing gas with a minimum of injection devices. The process is advantageously used in converters for pneumatically converting pig iron into steel and in which oxygen is blown from above onto the bath of molten metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.