Bulletin . -1,2631,220-1,270 1,104-1,198 1,056-1,064 1,048-1,0621,072-1,078 o 1,095a 1,095 a 1,0951,048-1,0801,304-1,313 Above 1,400Abovei, 406 1,304-1,330 1,227-1,322 1,104-1,322 1,206-1,350Abovei,402 o Temperature at end of deformation of cone; temperature at which deformation began not observed. The final deformation points are plotted in figure 17, in which theabscissas represent the percentages of water vapor in the mixture,and the ordinates the temperatures of final deformation. The initialdeformation points are plotted in a similar manner in figure 18. FUSIBILITY OF COAL ASH OF HYDROGEN
Bulletin . -1,2631,220-1,270 1,104-1,198 1,056-1,064 1,048-1,0621,072-1,078 o 1,095a 1,095 a 1,0951,048-1,0801,304-1,313 Above 1,400Abovei, 406 1,304-1,330 1,227-1,322 1,104-1,322 1,206-1,350Abovei,402 o Temperature at end of deformation of cone; temperature at which deformation began not observed. The final deformation points are plotted in figure 17, in which theabscissas represent the percentages of water vapor in the mixture,and the ordinates the temperatures of final deformation. The initialdeformation points are plotted in a similar manner in figure 18. FUSIBILITY OF COAL ASH OF HYDROGEN AND WATER VAPOR. 51 It will be noted that both sets of curves have well-defined minimawhen the water vapor formed 40 to 70 per cent of the atmosphere. The final deformation points (fig. 17), which were more accuatelydetermined, show a fairly uniform minimum in mixtures rangingfrom 30 to 70 per cent water vapor. The establishment of this rela-tion enables the formulation of a practical method of determining. o o o o in o in o *fr *r f*> CO o o o o o IT) o in o IT) CJ CVJ i-i i-H O •±va3dW3i oz Ll|Q }-> I-1 the lowest softening temperature of an ash in a mixture of approxi-mately equal parts of hydrogen and water vapor. Seemingly, thegas mixture need only be controlled between limits of 30 and 70 percent water vapor to insure the lowest softening temperature of the ash,within the unavoidable experimental deviation in determininationsof this character. 52 FUSIBILITY OF COAL ASH. The pronounced effect of viscosity on the rate of deformation ofthe ash cones is shown in the relative positions of the curves of initialdeformation in figure 18 and the curves of final deformation in figure17. Sample 16586 had the highest initial-deformation temperature
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
