期刊
INTERNATIONAL JOURNAL OF MINERAL PROCESSING
卷 112, 期 -, 页码 107-109出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.minpro.2012.04.006
关键词
Filtration; Iron ore; Hematite; Carbon dioxide; Zeta potential
资金
- Div Of Industrial Innovation & Partnersh
- Directorate For Engineering [0832427] Funding Source: National Science Foundation
Filtration of hematite ore slurries can be a bottleneck in some hematite processing plants due to inadequate filtration rates caused by the dispersion of fine particles. Flocculation of fine particles in the slurry decreases the specific cake resistance of the filter cake allowing for increased filtration rates. CO2 sparging of hematite slurry was shown to increase the filtration rate by altering the pH and the surface chemistry of the particles. It was shown that an increase in filtration rate of 278% can be accomplished by lowering the pH from 11 to 6.5 using CO2 at a lab scale. This was attributed to increased flocculation of hematite and silica particles in the ore. (C) 2012 Elsevier B.V. All rights reserved.
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