Wetter for fine dry powder
US4021021A · kind A · utility
Inventors
Key dates
| Filing date | Apr 20, 1976 |
| Grant date | May 3, 1977 |
| Priority date | — |
| Expiry date | Apr 20, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F27/15
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for wetting fine dry powders such as bentonite clay with water or other liquids is described. The system includes a wetting tank for receiving water and a continuous flow of fine powder feed. The wetting tank has a generally square horizontal cross section with a bottom end closure in the shape of an inverted pyramid. Positioned centrally within the wetting tank is a flow control cylinder which is supported from the walls of the wetting tank by means of radially extending inclined baffles. A variable speed motor drives a first larger propeller positioned immediately below the flow control cylinder in a direction which forces liquid filling the tank to flow downward through the flow control cylinder and a second smaller propeller positioned below the larger propeller having a reverse pitch to oppose the flow of liquid being driven downward by the larger propeller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.