Method for slag removal during metal processing
US10151534B2 · kind B2 · utility
Inventor
Key dates
| Filing date | May 6, 2016 |
| Grant date | Dec 11, 2018 |
| Priority date | — |
| Expiry date | Dec 17, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B7/14
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method (110) for removing a quantity of slag (24) from hot metal (6) in a ladle (2) during a process of metal purification such as steelmaking using an improved skimmer paddle (100) having a system of internal piping (60) that at one end is attached to a source of gas and at a second end terminates into one or more ports (64). The improved skimmer (100) is moved along a top surface (6a) of the hot metal, though the quantity of slag, and predetermined flows of gas are forced into the piping system and expelled through the port or ports (64) to move the quantity of slag out from the back of ladle to be skimmed into a slag pot (4) to remove undesired impurities from the hot metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.