Pelletized spent lime and process of making same from wastewater treatment residue
US10865154B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2019 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Feb 20, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Water-dispersible pellets are provided that includes spent lime particles present from 80 to 99.5 total weight percent. A binder component is also present from 20 to 0.5 total weight percent. The pellets have a mean pellet domain size. The spent lime particles, and the binder component present in a form such that contact with water causes pellet dispersion into more than 100 pieces. A process of forming spent lime pellets is also provided that include spent lime being dewatered to a free-flowing powder. A binder is then added under conditions to induce agglomeration of the free-flowing powder to the form the pellets. A process of treating a target crop is also provided based on such pellets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.