i eh vies pean ae 5 bo a3 . is fea) 
_ 262 REPORT OF THE COMMISSIONE 
_ but it was found impracticable. The first rolls would not take them — 
_ however, appears to be the most rational method of disposing of them... 
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DISPOSITION OF CHIPS. 
An attempt was made to pass the chips through the five-roll mill, ~ : 
aan, 
easily, and the second set of rolls had to be opened somewhat to — 
secure the proper feed. The bagasse issuing from the-mill contained 
still 65 per cent. water and made a poor fuel. Re 
It would probably not be a difficult problem to so adjust the mill as oe 
to secure a proper drying of the chips. To return the chips tothe soil, 
It is true that if spread too thickly on the soil the chips'‘may prove ~ 
highly injurious, but if distributed in a thin layer, covermmg almost” | 
-if not quite the original acreage of the cane furnishing them, they 
-* 
would certainly prove advantageous. The chips would not only —~ 
furnish organic matter to the soil, and thus increase its porosity, but 
they also contain still a considerable part of nitrogenous matter,-—_ 
which would afford a valuable plant food. Even the richest land ar 
‘should be treated fairly, and the cane-field should receive as nearly ~~ 
as possible as much asit gives. The additional cost of replacing the 
chips on the field is a matter which should receive attention here, but —_ 
the benefit will apparently be greater than the expense. During the ~ 
manufacturing season the chips can be deposited in large beds, which 
subsequently can be transferred to the field. If time for the partial 
-decay of the chips should be desired, the accumulation of one season “af 
need not be moved until the following year. 
DISPOSITION OF SCUMS AND SEDIMENTS. 
The scums and sediments were successfully treated by the process 
of carbonatation. The expense of a lime-kiln is not necessary for this 
work. It was satisfactorily done by drawing the carbonic dioxide 
_ gas directly from the stack of the boilers. As high as 11 percent. — 
of CO, was found in the gases from this source. 2 Gate 
The scums, etc., treated with 2 to 3 per cent. of lime, are subjected 
to the action of the gas until the lime is precipitated. Theythencan — 
be easily and rapidly filtered. Me 
By means of a cheap and convenient monte jus the scums and sed-_ 
iments were also returned to the battery. The method of operating — 
was as follows: 
The scums and sediments from the clarifiers were collected ina 
tank furnished with a steam coil to keep them at the boiling temper- 
ature. This tank was connected with a monte jus of 50 liters capac- 
ity. This apparatus was connected with the compressed-air service 
used in operating the battery. It was so arranged that the master’ _ 
of diffusion, or his assistant, could operate it directly from the cen- 
tral column of the battery. 
After each cell was filled with chips, 50 liters of the scums were ~ 
run into the monte jus from the storage tank, and, by means of com- 
pressed air, poured into the full cell. The process.of diffusion was” _ 
then continued in the usual way. The quantity of liquiddrawnfrom 
each cell was increased hy the amount of scumsadded. Forinstance, 
if 900 liters were the amount regularly drawn, 950 would be taken” | 
from a cell to which the scums had been added, as above indicated. 9 
1. #5 
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