Washability Studies of Coal from the Mary Lee Bed at the Bankhead Mine, Bankhead, Ala |
Common terms and phrases
0-inch composite 0.10 specific-gravity distribution 1.5 SPECIFIC GRAVITY 14 mesh 3/4-inch sizes 38 40 CUMULATIVE 40 50 CUMULATIVE 40 CUMULATIVE ASH 60 70 ELEMENTARY 70 ELEMENTARY ASH 80 CUMULATIVE WEIGHT 90 Elementary Specific ash content ash fusibility ash reduction ash-forming impurities bottom bench Bureau of Mines CENT 70 coal and refuse coal contains coarser sizes Composite through inch crushed to pass Crushing the 3-inch CUMULATIVE WEIGHT YIELD curve is ordinarily curve shows distribution 0.10 Cumulative Elementary 90 Elementary Specific gravity float-and-sink data float-and-sink tests gravity distribution 0.10 gravity distribution curve IMPURITIES BY CRUSHING Lee bed sampled Mary Lee bed mesh 10 CUMULATIVE pass 3/16 inch readings of 10.0 reduce the ash screen-sizing and float-and-sink separation between washed Softening temperature SPECIFIC GRAVITY 80 Specific gravity distribution SPECIFIC GRAVITY Figure Specific-gravity distribution 0.10 specific-gravity distribution curves standard seam samples top bench Tuscaloosa U. S. Bureau uncrushed washa Washability Studies washed coal washing difficulty