, 1890-11-26
The ManipuIatiOm.O t Cane juice
from Mills TO Marketable
Products.
From the Louisiana Planter

WOrlQ are now buTnou 10 1OuLeldud, dAO CAO
methods being tried and adopted are watch
ed with deep interest, and the results obtained,
both as to quantity and quality of the products,
will attract much attention. 1t behooves the
planters to leave no stone unturned in their
efforts to attain a high point of perfection in
Juice extracted, from a financial standpoint,
and it's concentration into marketable products
of great excellence in quality Of color and
polarization. Not mediocrity, but a notor1ety
for superiority must be sought to realize the
highest price for the different grades of sugar,
and also molasses, as no other cane growing
region can at present compete with Louisiana
but Porto Rico in the latter food stun.
TtR refner melts the different grades of
sugar to syrup, to say, about 30 deg. Baum6
for the purpose of first eliminating the I'M
%pirities, and then the coloring natter, prior to
concentration to masse cutie.
The liquor is lined, brought to a boil, and
the g rup drawn from the scum. The suS-
g. pended impurities are removed By filtration,
e either in bag filters or otherwise, and the
coloring matter by passing the sugar solution
through bone black. The manipulation of
cane juice is of the greatest importance
land can and should cost less than refinery
LIQUOR with the exception of the expense OF
concentration, as mill and diffusion juice are
. necessarily diluted to arrive at a maximum OF
extraction), and every care should b. taken to
remove the impurities, before marked cQgnGen-
tration takes place, by the aid Of delegation
and Qualification. If sulphurous aoId is used
in the process all trace Of sulphurlc acid
should be removed and the gas cooled prior to
g0ming in contact with. the juice.
Then lime in the CHARTERS until the solution
is slightly alkaline, seems to be conceded the
method by which the largest amount of sugar
can be had from a given aRohnt OF juice OF
known strength. When the planter becomes
aware of the great loss in sugar which he daily
incars by converting. it into molasseS when
boiling the impurities with the pure juice,
then be will become aroused to the necessity
Of removing them, ever. if it has to be accom-
plishel by the expenditure of money in a
little extra fael The superior quality of the
products and the increased quantity Of sugar
VIII more than compensate for the Increased
expense.
On visiting a factory where vacuum pan
Bug,rs are made, a number of CHARTERS (often
too limited) are seen varying in number, ac-
cordingGto the capacity of the establishment
and the opinions of the proprietor. The juice
is drawn into the c~lariier, and when the coils
are covered, steam is turned on, and as the
vessel is being filed the juice is lined,
When the desired euantity is taken into the
c%lariier the valve is shut, and the mass is
brought to the boiling point, when the steam
is cut off and the scum is removed.
Steam is turned on at short intervals and
the Juice brushed a few times as the impuri-
ties arise. It is then left to settle for twenty.
minutes-half an hour, or a shorter or longer
time, according to circumstances. 6n:
The liquor is. then drawn off Qeaving tho
cloudy juice at the bottom to be sent to the
filter press), and is then supposed to beg
ready for the multiple effect, where it is
r oidly concentrated to % dogs. or % dega
Baum6, and above if desired. In many houses
the concentrated liquid is left to settle in
tanks for some time before boiling to masse
cite in the pan. If it were possible to have
the Lining of each clarifer performed az
poink, much scum removed by the first ope-
ration, the juice allowed to settle thoroughly,
concentrated, settled again, then nice first
sugars can be made; but it is very questiona-
BILE if such a system is the one by which su-
perior results can be had in output. !.
The juice after DELEGATION and Qualification
should present the appearance of light sherry
mot the dark) land to attain the end in view,
the scum must be removed during the ebulli.
ton, or the entire mass should be filtered
prior 10; concentration, as tits an established
fact that the impurities, are what dArken !tbs
juice when being boiled at low temperature.