Preparation method of mercury removal material
US12427495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2022 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | May 11, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2220/4806
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A modified natural sulfide ore material, a preparation method, and a use thereof are disclosed. A natural sulfide ore and a copper salt are used as raw materials. The natural sulfide ore is modified through mechanical grinding for activation, drying, and the like to synthesize a sulfide ore composite. The copper salt is subjected to a reaction to increase metal sites, produce fine microcrystalline particles, and change the crystal structure, such that active sites can be fully exposed. When contacting mercury in a gas phase and/or a liquid phase, the modified natural sulfide ore material can convert the mercury into a stable compound to realize the immobilization and removal of the mercury, which has advantages such as large mercury adsorption capacity, high adsorption rate, wide application temperature range, low cost, abundant raw material reserves, simple operation, and environmentally-friendly mercury removal products without secondary pollution and shows promising industrial application prospects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.