Drying suspensions of materials
US6364224B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 1998 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | May 20, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B11/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and a process for drying a suspension of a finely divided particulate solid material to produce the solid material in a substantially dry and unagglomerated form. The apparatus consists of a grinding chamber containing a particulate grinding medium such as silica having a diameter of 1-5 mm, a conduit for introducing the suspension into the grinding chamber and an impeller which rotates in the grinding chamber. The grinding chamber has a perforated base through which a heated gas is introduced to provide an upward flow of gas through the grinding chamber and through the grinding medium. As the particulate material is dried, fine particles of the dried material are carried upwards in the upflow of gas through the grinding chamber. A filter such as one or more cyclones and/or a bag filter assembly is located downstream of the grinding chamber in order to separate the particles of dried material from the gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.