Method for fluxing molten metal
US5616167A · kind A · utility
Inventor
Key dates
| Filing date | Feb 26, 1996 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Feb 26, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved method for treating a body of molten aluminum using an impeller suitable for dispersing fluxing gas or solid particles in the body of molten aluminum. The method produces increased shear forces in the body of molten aluminum and reduces vortex formation. The method comprises providing a body of molten aluminum and projecting an impeller on a shaft into the body, the impeller comprising a rectangular-shaped body having a first rectangular-shaped face and a second rectangular-shaped face disposed substantially opposite the first face, the faces substantially parallel to the shaft and defined by a length L and a height H wherein the length L is greater than the height H. Fluxing gas and particles are dispersed in the body by rotating the impeller in one direction and thereafter reversing the direction of rotation of the impeller to a counter direction, the direction of rotation of the impeller being reversed periodically to provide increased shear forces in the body for improved dispersion of the gas or the particles in the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.