Process for rendering an ash inert, artificial pozzolana obtained by means of the said process
US6962119B2 · kind B2 · utility
1Cited by
4References
7Claims
0Family size
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Key dates
| Filing date | Dec 12, 2001 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Jan 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for rendering inert an ash originating from the incineration of municipal waste, according to which the ash is subjected successively to treatment (19) with a water-soluble phosphate (20) in the presence of water, under conditions adjusted to crystallize hydroxyapatite and/or whitlockite, and to calcination (22). Artificial pozzolana, obtained by subjecting an ash originating from the incineration of municipal waste to such an inerting process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.