Apparatus for slag removal during metal processing
US10132567B2 · kind B2 · utility
Inventor
Key dates
| Filing date | May 6, 2016 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Sep 21, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B7/14
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A skimmer (100) for removing a slag layer (24) from hot metal (6) in a ladle (2) during a process of metal purification such as steelmaking. The improved skimmer (100) is a steel framework covered in reinforced refractory, having a system of internal piping (60) that at one end is attached to a source of gas and at a second end terminating at one or more ports (64). The improved skimmer (100) is attached to a boom for a prior art skimming machine. In use, the improved skimmer (100) is moved along a top surface (6a) of the hot metal, though the slag layer, and predetermined flows of gas are forced into the piping system and expelled through the port or ports to move the slag layer out from the back of ladle so it can be skimmed into a slag pot (4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.