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ANALYSES 
AVERAGE COMPOSITION OF COAL AVERAGE COMPOSITION OF GAS VOLUME 
Moisture . 2. 1. 2. 6. 6 ee eas Carbon dioxide (CO?) . . . . a vs 
Volatile matter . . . . . 26.78]Carbon monoxide (CO). . . . 15.9 
Fixed carbon. . 1. ew ee 38.82|]Hydrogen (H2). 2. 6. e 1 ke 10.8 
ASH ce Ses gh acWo Sin aes %e 23.44]Melhane (CH*), . 2 2. 2 « e 2.9 
Nitrogen (N*). «2 2 « w 2 «© 58.8 
£00.00 Oxygen (0?) 2. 6 6 i far ae 0.1 
Sulphur. . . 2. 6 2 8 6 6 204 
100.0 
The net results of the purification tests at Kalk, and the analyses 
made there and elsewhere may be summarized as follows: 
First—All Brasilian coal mined in a commercial way will be high 
in both ash and sulphur, containing a total of 20 to 35 per cent. 
of impurities, of which 2 to 8 per cent is sulphur. 
Second—The sulphur occurs mostly in nuggets of iron pyrites, 
which can nearly all be removed from the coal by modern processes of 
crushing and washing, and the recovered pyrites utilized in the ma- 
nufacture of sulphuric acid. 
Third —From the coal of S. Jeronymo, in Rio Grande do Sul, two 
grades of purified fuel can be obtained ; grade No. 1, 32 per cent. of the 
amount treated, having less than 14 per cent. of ash, and very low (0.6) 
in sulphur, while grade No. 2, amounting to 42 per cent. of the whole, 
will have a little less than 27 percent. ofash and very little sulphur. 
Fourth—From the Barro Branco coal of Santa Catharina, two 
grades of coal can also be obtained, the first grade, 38 per cent. of 
the whole, having 14 per cent. of ash while the second grade, 42 
per cen. of the whole will have 28 per cent. of ash, both grades 
containing only a little over 1 percent. of sulphur. It is also possible 
to secure a fair grade of «nut» coal from the Barro Branco bed that can 
be used without briquetting. 
