The Pacific commercial advertiser. [volume] (Honolulu, Hawaiian Islands) 1856-1888, 1867-08-17
The ConcrcIor Principle for RcGncry
Sugars.

Honolulu, Aug. 10Th, 1867.
To The Editor Of the CONT -fireriiser:
SIR Having from the first and for some months
past taken great interest in the accounts of the Con-
cretor, | take the liberty of suggesting to our plant
ers, through your columns, the probable great value
of the principle of the Concretor for finishing and
drying refinery sugars.
The original intention of the Concrctor appears,
as per the account of it in your last number, to have
been to boil up solid the cane juice with the dirt,
scum and everything as it comes from the mill. 1t
would seem that in our case, that Is in these Islands,
it will not he advisable TO pay charges, freight and
duties on the dirt and impurities so boiled up. In
deed by the letter you quote from Antigua, the writer
talks of getting up filters for his Concretors, which /
believe were not in the original plan; and we all
know that it would be much more practicable to boil
up clarified and skinned juice to a solid non-dcli-
quescent mass, than it would be to do 50 with the
impure juice.
The leading principles of the Concretor are
First-What all sugar boilers aim at, viz, to boil
at as low a temperature as possible-for which pur-
pose the inventor uses the well known sorghum pan.
Then, to expose the partly cooked juice in the thin
nest possible MIN to a blast of hot air, which appears
to eyaporate the whole of the moisture without burn
ing the juice, thus doing his finishing and drying at
one operation and dispensing entirely with coolers,
centrifugils, and the attendant labor, and abolishing
that great nuisance molasses.
1t would then appear that whatever boiling appa-
ratus our planters may have, they may pass their
juice through all or any of the usual processes of
CHARTERS, train or sorghum pan, Netzel pan, strike
pan or vacuum pan, and then finish on the finishing
part of the ConcretOr, that Is, ON any arrangement
that will allow of a hot blast Of air being hroIcn on
70 Il large surface Of Thin films of nearly cooked
Juice with an arrangement for taking it off as made.
The Juice would of course have 10 leave the vacuum
pan or strike pan for the finishing part Of the Con-
cretor at a considerable less density than when it is
intended To- be run into coolers to make sugar. The
product of the cleaned juice on the Concretor would
only differ from sugar in the grain, rs it does not get
time to make a grain of any size, but would really
crystalize in microscopic grains like flour. 1t might
Ice called the -four Of sugar, and would lie precisely
the article the refners want, free from mOlasSes or
any possibility Of draining, and ready to pack in
bags for shipment.
Believing this adaptation of the principle of the
Concretor for finishing refinery sugars will be one of
the most valuable Improvements ever introduced into
these Islands, | trust some Of our planters may be
induced to try the experiment 1t neel not be eX-
pensiyc. | understand Capt. Hebron has at the
expense of a few dollars taken advantage of one
part of the Concrctor principle, that is exposing a
large cooperating surface in their films, by means of
a simple wooden reel working in his juice or mOlaSses.
remain, &c, y.
y. b. The addition Of the finishing portion of the
Concretor to sugar boiling works of amy kind already
in operation, should of course add to the boiling
capacity Of the works-and give Il larger yield in a
certain time.