, 1881-05-04

PROCESS OF bO1l1ng, WHeH the DANGER OF Iais6
grain forming Is greatest, though in the Sec
ond case the danger is greater than in the
first. are 81. The time when s~ulphuric
acid is admitted into the pan. 2. The
opening of the sugar when restarting the
pan to I" doublev; that is to say. when
having struck out half the contents of the
pan you 60 about again, admitting fresh
portions OF syrup on to the mosse cute lett
in the pan. If the contents Of the pan
are not sufficiently high when sulphuris
acid (about which I shall speak presently Is
admitted, false grain is liable to form after
wards whilst working up the contents for
striking. Do not, however, fall into the op.
posite extreme and boil up high before admit
ting the acid, or an equal disagreeable dis
aster may overtake you, for 10 the case of the
masse cEite being too concentrated the acid
will cause the whole to turn into Jumps OK
spoilt sugar very much resembling the sgreen
clinkers which are found under q tsache when
the brick work around it has been leakIn g.
In saying this l am speaking from ac1uaI sA
perien oe.
Half the contents Of the pan, we Will say,
have been struck OUT, and The pan has
been re-started with 3 tons OF massse quito
left in il. This MGSse cnlte is mighty con-
ContrateQ, 1nu udS w W OuuNON oy SAhhO~
ting fresh lots Of syrup which must de-
nosit on the grains which have already
formed and been brought to a good size
in the pan but unless great care be taken
and the masse-cuite opened very slowly,the
new To- of syrup. instead of deposlting on
the already formed crystals and increasing
their size. forms all independent grain
of itself call false grain. which not only
spoils the sugar, but prevents the molasses
from leaving it in the centrifugals, These
are the only two occasions when q
careful boiler fears "a clOud,0 but with O
careless or inexperienced man., such Is TO
be apprehended and expected any time
after granulation up to the striking point.
! If false grain should appear III Inc
nan and YOU can be certain from the
t;ma at which it appeared that it is
not caused by acid. or doubling, you
can be pretty sure that it is the
result Of the pan boiler having opened
his suoar too much in endeavouring TO
swell the groin this however is no excuse.
as in such a case it always gives a timely
warning by the sling between the grains
taking on a thick smoky look, when, if
nrompt measures be taken, the danger can
| be averted, as will be shown presently. l
was three years ia the colony before | ever
saw false grain, but o real right down good
case Of it once seen is never forgotten.
! Pan boilers Frequently gets.it in their pans,
| Init drive it away before striking, and the
fact goes no further; only the number OF
gallons Of juice taken to make a ton OF SUI
oar will be f~earfuliy increased. In the case
Where false grain is very bad there is no
remedy for it and the very best and only
course to pursue is to strike 1t all out iln-
mediately, and spin it in the centrltugais,
rixing it first with warm water. it found
necessary. The use Of hot water is however
onlv to be recommended when the sugar
cannot positively be cured without. When
"the cloud is not very bad the best way to
oct rid of it as follows. 1.-THE pan is notmore
Than half full, or only very little more,
shut off the injection water, OR nearly all,
Ind make a few heavy charges; the heat,
combined with the washing Influence OF
the new syrup, washes ard melts away
tina false grain. If, however, the pan 10
nearly full. and false grain is fairly devel.
oped Through gross negligence or lgno-
rance Of the pan b%oilerl, the remedy Is to
shut off the injection cock, as 10 the other
case. and work the masse.custe up as high
IA ever it can be got lido not forget the size
Of the %outlet.) This plan will not eradl
cate all trace of /" the cloud" but will dc
so sufficiently to allow the sugar to be
-. When. from an abundance of Sy'