Dissolving and deaerating method
US5044761A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1990 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Jun 18, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F21/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of dissolving a powder material is disclosed in which the material is wholly dissolved and the existence of bubbles in the resultant solution is greatly minimized. An agitating blade stirs a liquid in an air-tight tank while the powder material is inserted into the liquid. The pressure is then reduced in the tank causing large bubbles to swell. The bubbles are destroyed by the agitating blade. The pressure reducing operation is then turned off so that the bubbles do not leave the tank through a pressure reduction port. The pressure reducing operation is then repeated a number of times to dissolve the powder material and to destroy bubbles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.