Dry dust control materials
US7208023B2 · kind B2 · utility
2Cited by
15References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2003 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Nov 18, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L5/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention discloses methods to reduce dusting in bulk materials, such as coal. The method includes mixing with the bulk material either a fraction of the bulk material having an electrostatic charge opposite that of the remainder of the bulk material or a heterologous charge control agent having an electrostatic charge opposite that of the bulk material. The attractive forces between the opposite electrostatic charges agglomerate dust particles to larger particles that quickly settle to control dusting. Also disclosed are materials produced by the methods described above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.