— 147 — 
REPORT 
ON WASHING TESTS WITH BRAZILIAN COAL 
FOR 
Dr. I. C. White. Chief of the Brazilian Coal Commission 
Test n. 1—Forthis test equal quantities of the two varieties of 
S.J.B.() & S.J. T. (*) were taken. 
Average samples of these contained 34.9 % of ash. 
The object of the tests was to determine the method by which to 
obtain a coal containing 10-15 ,/° of ash. 
As the coal was streaked with a considerable amount o bituminous 
shale, it appeared at first impossible to obtain a coal with the required 
percentage of ash without preliminary crushing. 
Small preliminary tests showed that crushing to below 6mm was 
necessary. 
The whole of the material was therefore crushed on a bell mill 
down to under 6 mm. andthen washed on a Fine-Washer having a 
felspar bottom. 
The resulting products were : 
Coal n. 1. Coal n.2,and shale with pyrites. 
The slimes were collected in two neighboring settling tanks, and 
we thus have: 
Slimen. 4 and Slime n. 2. 
The results obtained in this test are collected in the accompanying 
table. All weights are the weights of the dry material per cent. of stuff 
worked up. 
(*) Bottom member 8, Jeronymo coal. 
(*) Top member 8, Jeronymo coal, 
