System for preparing ground-impregnating material
US4842780A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 14, 1987 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Aug 14, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/29
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for preparing a ground impregnating material which comprises a line for feeding a base liquid component of the ground impregnating material, such as an aqueous sodium silicate solution, and a high pressure carbon dioxide gas bomb connected via a carbon dioxide gas delivery line to the base liquid component feed line. The carbon dioxide gas delivery line has a carbon dioxide blowing nozzle provided therein. The carbon dioxide gas blowing nozzle comprises a disk centrally perforated with a nozzle bore. A plurality of the carbon dioxide gas blowing nozzles having different opening diameters may be switchably provided in parallel in the carbon dioxide gas delivery line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.