Coal-sand attrition system and its` importance in fine coal cleaning. Quarterly report, May 31, 1991--August 31, 1992 [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 20 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 primary objective of this project is geared toward the substitution of steel media by fracturing silica sand as a grinding media for ultraline coal grinding. The project has been divided into four subgroups for bookkeeping purposes and possible ease of execution. Some of the tasks would be executed simultaneously as overlapping is inevitable. The grouping is as follows: (1) sample procurement, preparation, and characterization; (2) batch grinding tests; (3) continuous grinding tests; and, (4) fracture mechanics. The hardgrove indices for the four coals employed in this work have finally been determined by the personnel at the R and D Center of Drummond Coal Company using 14 × 28 mesh feed size materials. The values obtained for the respective coals are given in Table 1.
- Report Numbers:
- E 1.99:doe/pc/91280--t5
- Other Subject(s):
- Published through SciTech Connect.
Schultz, C.W.; Mehta, R.K.
Alabama Univ., University, AL (United States). Mineral Resources Inst.
- Type of Report and Period Covered Note:
- Quarterly; 07/01/1992 - 09/30/1992
- Funding Information:
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