Ca(OH)2 particles
US6322769A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1998 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Jun 29, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is a Ca(OH).sub.2 particle composition and a method of making the composition, the composition consisting essentially of dried calcium hydroxide particles having a moisture content of less than 2 percent by weight of the total composition, a specific surface area greater than 30 m.sup.2 /g, a total nitrogen desorption pore volume of at least 0.1 cm.sup.3 /g, and a CO.sub.2 content of less than 2 percent by weight of the total composition, the aforementioned particles being in the form of a mixture comprising first fraction of particles having a size of less than 32 micrometers and a second fraction of particles of a size greater than 32 micrometers, the weight percent of the second fraction ranging from 20 to 50 percent, the aforementioned particles having a nitrogen desorption pore volume consisting of pores with a diameter ranging from 100 to 400 Angstroms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.