Coal-sand attrition system and its' importance in fine coal cleaning [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1992. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: (6 pages) : digital, PDF file
- Additional Creators:
- United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- The product size depicted by the median size and d₉₀ as well as the corresponding specific energy for the series of tests with silica sand and steel shot respectively are given in Table 3. It is obvious from these results that the products from both systems have a similar degree of fineness. but the silica sand system uses a relatively lower specific energy than the steel shot system. Depending on the experimental conditions, the energy input ratio of the steel and sand media systems varies between 1.3 to 5. Such a difference in energy input is expected due to the difference in the specific gravity of the two media particularly where equal volume of the media is used and no dramatic changes in the slurry rheology occurs during the grinding operation. The energy consumption for both the silica sand and steel shot systems increase with increasing stirring speed as well as decreasing slurry density. Since the corresponding influence on the product fineness is minimal, it is more economical to employ relatively low stirring speeds and high pulp densities. The feed particle size seems to have only a small influence on the product size in the range studies.
- Published through SciTech Connect., 01/01/1992., "doe/pc/91280-t4", "DE92019857", and Alabama Univ., University, AL (United States)
- Funding Information:
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