Coal range, analytical data

Table 2. Analytical data on coals used in the study of the wide range...

A wide range of bituminous coals, representing most of the major U. S. coal fields, were microscopically and chemically analyzed in this study. The samples tested, approximately 200 in all, were obtained through various coal producers. However, analytical data were not available for all samples carbonization, chemical, and by-product gas data for these subject coals were assumed to be the same as those reported previously in published sources (7, 9910,11,17,18). Only those carbonization data obtained from tests conducted in 18-inch pilot coke ovens at 900°C. are included. The remaining analytical data, approximately one-tenth of the total test results, were obtained from full scale commercial coke oven tests. Because these latter data were not sufficiently represented in the study, they were not considered in computing correlation coefficients (r). 

Source and analytical data on the coals used are given in Table III. The experimental data and results of tests in the continuous flow reactor over a wide range of conditions using both slurry feeding and dry coal feeding are summarized in Tables IV, V, VI, and VII. The data and... 

Fig. 3. X-ray diffractogram of Class-F bituminous coal fly ash. Analytical conditions diffraction data were collected using a Philips X-ray powder diffractometer (45 kV/30-40 mA CuKa theta-compensating variable divergence slit diffracted-beam graphite monochromator scintillation detector) automated with an MDI/Radix Databox. The scan parameters were typically 0.02° step size for 1 s count times over a range of 5-60° 2-theta. All data were analysed and displayed using a data reduction and display code (JADE) from Materials Data Inc., livermore, CA.

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