Honolulu star-bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1912-2010, 1916-10-13
Interesting Papers are Read
and Discussed at the Final
Convention Session

The second and last day s session
of the sugar chemists ana sugar bon"
ers' convention was held this. morning
and the general subject OF the refined
value OF sugar was taken up and IN
der this head J. u Pratt presented
paper on Curing and Marketing and
W. X. orth on Evaporation and Su-
gar Boiling. The two other articles
of the day we're Progress in Glucose
Determination, by w. r. McAllop and
Sugar House Balances" by W. Duker.
At noon the members Of the assecia-
zion were invited by the officials OF
the sugar planters experiment station
to visit their station at Waipio' mere
a luncheon was served. -.
, This evening the members VII
hold their annual banquet at the COM
mercial Club
In his report Pratt said in part:
Larger Quantities Handled
In the last few years there has
been a considerable increase in the
extraction obtained by the majority
Of the mills I'm these islands, and,
while there is no doiibt that we have
not yet reached the economically prof.
table limit. there is also no doubt
that this isattended by slightly lar
ger proportion OF impurities In the
Juice that is delivered to the boiling
house. Furthermore, The tons of cane
handled per hour is increasing each
year without corresponding increase
in the equipment necessary to handle
the same The question of curing the
massecuite or sugar before the molas-
SEES has been separated by centrifu-
gals, Is, therefore, becoming more inn
portant yearly. Curing is; OF course,
only one link in the chain OF sugar
manufacture and is influenced to a
great extent by the manner In which
the preceding operations have been
carried out II the juice has been
clarified and the massecuite boiled in
as good a manner as possible, the
question OF curing will not present
the serious problem that IL will IL a
factory has poor Qualification sys-
tenn or where, from lack of sufficient
capacity, the centrifugal, pan, or other
work must be rushed at top speed to
keep the house from becoming
blocked
while curing includes several dis
tinct operations, the methods of has
tening the drying OF low-grade mas
secuitcs in the centrifugals are arous-
ing the most interest, and SO ] will
confine myself to this phase OF the
subject
Much Care Necessary
!. THE usual practise OF treating mas.
secuite before 1t enters the centrifu-
gal is to boil the strike very stiff and
later dilute the molasses surrounding
the su4ar crystals until the masse-
cutie has reached a definite degree
Brix, OF course, extreme care is nee
essary to prevent the dissolving Of any
Of the grains of sugar Some planta-
lions are using final molasses for the
same purpose; the details varying,
some use the molasses heated. others
cold, some dilute the molasses before
using, while others do not So
"0ther plantations are accomplish
ing similar results by the use of hot
water coils or pipes in the mixer
ITSELF
The time honored process OF hast.
ening drying in the treatment of mas
secuite in the centrifugals is by the
use of steam. The use of steam be-
tween the basket and outer casing is
the more. common and G.. F. Renton,
Jr., gives a good idea of the proceed
ure TO prevent the eating away of the
basket.
Drying Process fastened
The steam Is discharged between
the curb walls and the centrifugal
basket plate, fastened to the curb
wall. throws the steam in the same
direction as the revolving centrifugal,
thereby saving the basket from being
cut by the steam Jet The effect of
this steam on the purity of the molas-
SEES is very small. repeated tests show