Abstract
Lowering of filter cake moisture of ultra-fine (d30 ≈ 25 μm) coal to a 20 percent level using the conventional vacuum filtration could be achieved using a combination of metal ions and surfactants. Pretreating coal slurry with about 0.2 Kg/ton of a surfactant and 50 ppm of copper or 10 ppm of aluminum ions provided filter cake containing 22.8 percent moisture. The towering of moisture is explained due to formation of hydrophobic micro-aggregates which facilitates dewatering.
| Original language | English |
|---|---|
| Pages (from-to) | 103-116 |
| Number of pages | 14 |
| Journal | Coal Preparation |
| Volume | 17 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - 1996 |
Bibliographical note
Funding Information:Financial support for the study was provided by Illinois Department of Energy through the Illinois Coal Development Board and the Illinois Clean Coal Institute and the United States Department of Energy.
Funding
Financial support for the study was provided by Illinois Department of Energy through the Illinois Coal Development Board and the Illinois Clean Coal Institute and the United States Department of Energy.
| Funders |
|---|
| Illinois Coal Development Board |
| Illinois Department of Energy |
| Michigan State University-U.S. Department of Energy (MSU-DOE) Plant Research Laboratory |
| Illinois Clean Coal Institute |
Keywords
- Flocculation
- Metal ions
- Micro-aggregates
- Surfactants
- Vacuum filtration
ASJC Scopus subject areas
- Fuel Technology
- Geotechnical Engineering and Engineering Geology
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