Oxide products formed from calcined carbonate powder for use as biocide, chemical detoxifier and catalyst support products
US9913475B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2014 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Dec 10, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process and apparatus for manufacture of oxide products for use as biocide, chemical detoxifying, and catalytic support products, from caustic calcined carbonate powder, preferably from magnesite, dolomite, or hydromagnesite, is described. These oxide particles are characterized by high surface area, high porosity and a high degree of calcination, and the method of manufacture utilizes an indirectly heated counterflow reactor. The oxides may be used as a powder, granules, or formulated into a slurry and used as a spray, emulsion, foam or fog, or the powder product may be directly applied. Also described is the formation of particles with microstructures defined by at least one nano-crystalline structure positioned on the outer surface of the particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.