Fort Worth daily gazette. (Fort Worth, Tex.) 1882-1891, 1888-10-12

This continued until lsS va
passed mpe!lIug the manufacturers
10 sbste the nuisance, wnIch IVES
sCccmp ishei by passing the gss
throUgh rhe ''scranbers." These sTe high
towers hied with coke, over which wafer
is sept constantly trucking. The water
! shsorDs the gas aud thus the diff -uItY is
overcome. the resulting nquiL (Grude
muriatic scIo) 10 largely Used in making
bleacniDg poTuer, snd is really about the
Only source OI profit now 70 rlS eoGf
msur .c,urers. We have here d Ysfy
guon illustration Of the fact .hM Vi
substance wnIca is regarded ss o Rsstk'
pr1uuct end thrown away often Axle
oul to be more valuable Than thsaMain
substances ought 70 De obtained when lis
composition has been determined and
use found fr it. How well do we see
this ssme fac. demonstrated In the case
OF the manufacture CT common iilumiu
ating gas. A few years ego men wers
pa!d Tor caring away waste material
wh.ch to-day produces several timss the
amount of prof. tas. al the coke sEd gas
together psy.
But to go on with our process; the
"sall cake" is m!X.d with Chalk or msr-
BILE and coal, the mixture is pu. into
what is known rs reverDerasory furnace
znd fused. The sulphste of soda is con-
verted into the carbonate Of soda, and
the chalk into the oxysuipaide Of calcium.
TIE mixture CT these two substance,
which has q dark color dus to the pres
Ell ce Of some unde composed coal, is called
"blsck ash," while the process itself is
technically known az "bailirg" TIE
"blsck ash" lie then dissolved ia wstar
and allowed TO stand SO that some OF the
impurities and the coal can settle. This
solution after cart ful decant.ticn is evap-
Grated to dTyness snd the resulting solid
hss:ed to redpess. Soda ash or crude
carbonate OF soda is tbs result, end it is
from this suostslce thet our washing and
baklng sodss are directly made.
To obtain washing Gods the soda ash
| is dissolved IN hot water until the water
wi l not dissolve any more and the
solution allowed TO stand until all the
SOLD impurities have Settled to the bot.
tom. TIE Clear liquid Is then careful ly
drawn OF into very shallow iron pans so
that large str:sce mgy be exposed TO
the sir and Il Q evaporation Of water 20
en- more rapidly. The II fined carbonate
or soda gradually CRY STALKER, but form.
ing large masses. These masses Ct crys-
tsls are now collected, and after the sd-
herirg liquid has been drained from them
they are packed In barrels apd sent into
commerce as washing soda. In this con-
oitloD they contsin ever 90 per cent. of
water. hence when one buys ten pounds
+ va hing eoda he pays for six pounds
OF water and but four pounds Of coda.
To make baking soda they dissolve the
soda ssh In hot water nnd let it stand and
settle. as in masking washing soda, but it
is further purified OF flteriag it through,
| layers OF black sand and bone black. TfS
soda is then crystsliz ID out and dra,ped.
After draining il IS ground into coarse
powder and formed i1to cakes having,
holes running through them. Tce4
cakes are placed on perfors$n
shelves in sps cislly constructed
slr tight rooms, which have capacity OF
about ten tons Of scds. After the room
! hss been filed the door Is closed and
lccksd snd corbon,c acid gas, formed by
burning coal. Is forced in By means of q
blower. The soda remsine in this stmos-
! paere for irem three weeks to month,
! st the ard O! which tins Ii has absorbed