Fluid-energy mill
US7422167B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 2003 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Mar 15, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C19/061
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid-energy mill for size reduction of a material includes a manifold defining a grinding chamber having a first radius extending from a center of the grinding chamber, a gas inlet, a feed inlet, and an outlet. The feed inlet is positioned such that the material enters the grinding chamber tangent to a second radius extending from the center and larger than the first radius. The fluid-energy mill includes a cover for enclosing the grinding chamber. The manifold defines a non-circular groove around the grinding chamber, and a seal is positioned within the groove. The grinding chamber is cycloid-shaped. The manifold defines a protective pocket and a barrier at a region where the material enters the grinding chamber. The feed inlet includes a feed gas inlet, a material funnel, and a venturi. An intersection of the feed gas inlet and the material funnel form an elliptical hole. The feed inlet is oriented at an angle of about 30 degrees or more to a horizontal. The gas inlet is positioned such that a gas enters the grinding chamber tangent to a radius that is smaller than the radius of the grinding chamber. The outlet is positioned so that the material exits the grinding chamber at o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.