ON WASHING CAPE BRETON COALS. POOLE. 



247 



For comparison with the work done in the coal washer, a 

 laboratory test was made. An average sample of the coal was 

 treated in a solution of Calcium Chloride of 1.40 Sp. Gr., the 

 coal of 1.30 Sp. Gr. floated on the solution, and the shale of 

 2.04 Sp. Gr. sank to the bottom. Thus separated, the coal and 

 shale were thoroughly washed and dried, and severally bore to 

 the unwashed material the following proportion : 



Coal 81 % 



Shale, etc 90 



Dried at 212 Fahr. they yielded on analysis : 



RAW WASHED CTT . 



COAL COAL. 



Volatile Combustible Matter. 33.06 % 33.79 % 31.43 % 



Fixed Carbon 55.93 61.33 ,t 15.33 .. 



Ash 11.0 1 i, 2.89 ., 48.08 ., 



Sulphur 2.41 n 1.64 u 5.16 n 



The same Coal treated in the coal washer yielded : 



RAW WASHED cprATii- 



COAL. COAL. 



Volatile Combustible Matter. 33.06 % 34.07 % 30.82 % 



Fixed Carbon 55.93,, 61.26,, 23.21,, 



Ash 11.01,, 4.67- 41.22,, 



Sulphur 2.41,, 1.70 448,, 



On cokino-, 204 ovens made 683 tons of coke which showed 



O * 



an average composition as follows, after being dried at 212 F. : 



Moisture 0.40 



Volatile Combustible Matter 1.60 



Fixed Carbon 89.82 



Sulphur 1.65 



Silica 3.52 



Metallic iron 1.71 



Alumina 46 



Manganese 03 



Lime 82 



Magnesia 16 



Phosphorus 02 



Available Carbon, 87.02. 



