The Ogden standard. [volume] (Ogden City, Utah) 1902-1910, 1909-01-19

In the old method of smelling, the
matte produced. however. being much
lower IN grade than when the ore was
previously roasted.
This low grade matte is again put
through the furnace and the operation
manipulated in such a manner as to
burn on considerably more sulphur,
finally producing product OF the re-
required grade Of richness The tuy-
GRE zone of the furnace-where the
air blast Is introduced-is where the
smelling takes place, and is the only
portion OF the furnace where any sui
phur Is utilized as fuel. Above this
zone the sulphur Is only volatIlIzed
and escapes from the top of the fur
mace. The ore upon reaching the zone
CT fusion at the tuyeres, melts immcd-
lately and rapidly runs out OF the fur
mace SO that it is impossible to enrich
the matte without repeating the oper-
alton one or more times.
1t occurred to me that II 1t were pos
sible to retain the molten matte In the
tuyere zone for any desired time 1t
would be possible to obtain a product
of any desired concentration. To ac-
complish this end 1t would be neces-
sary to construct a furnace differing
considerably from those now IN COM
mon use and TO meet this end the Fink
furnace has been designed
In reverberatory practice the coal Is
generally burned on CRATE at one end
of the furnace. the flame only enter
ing the furnace, the heat being de-
elected downward and concentrated
ilto the charge. To obtain the full
efficiency of the fuel same should be
burned at point where the heat Is re-
ouired-ln the furnace itself-and, as
In the case of the fusion of the orc.
the maximum efficiency is obtained
when the coal is ground to powder,
the finer the better. for then the COM
bustion is practically instantaneous.
Blast furnaces require coke, a product
which is not always available. and
moreover 1t Is expensive as compared
tc coal. OIL has neger been success
Tully used i'll blast furnace smelling
practice, though some has been used
in Ieverberatory work In the Fink
furnace, coal, oil, charcoal OF sawdust
may be used, the heat obtained being
augmented further. where the ores
carry sulphur, by the combustion of
This element in the furnace. In many
instances, when once the smelling op-
Grafton is underway. the sulphur alone
- capable of supplying most of the
heat required for smelling The plant
at Garfield consists of two barrel
shaped receptacles, capable of revolv-
ing at different speeds and In opposite
directions The fuel is blown into one
and the flame is returned into the sec.
ond furnace. While the charge in the
first furnace Is being smeltod and re-
fined the charge in the second furnace
n roasting. the heat being supplied
from the gases escaping from the first
furnace. The construction of the fur
mace allows Of a bessemer smelling as
we'll as refining operation and the
crude ore charged into the furnace is
discharged rs finished product-blis-
ter copper.
NO Introduction Of Ore.
Fresh ore is fed into the furnace
either continuously or intermittently,
boing introduced into the bath of mol
ter Stag and matte, causing. the fine
PARTICLES to fuse Immediately, thus
preventing their escape as flue dust.
The revolving of the furnace hastepS
the smelling action very materially
and makes possible the bessemeriZinG
operation in 1t. A permanent refrac-
tory lining is used. thus differing from
the regular converter, which must be
lined NTH silica which lining is con
sumed in a very short time. Al
though the Fink furnace has been de-
signed primarily for treating fine ores
and flue dust, 1t may also be employ
ed for smelling ordinary ores. it be-
ing only necessary TO reduce the size
Of the larger pieces by passing same
through suitable crushers. The blast
furnace is pre-eminently a furnace OF
great capacity and will continue as a
most economical reducer of ores suit
ed to that style of smelling. yet Its
usefulness hardly extends to plants OF
small capacity: moreover, the product
obtained is always a matte which re-
ouires subsequent treatment to bring
same to blister copper To be sue
cessful such plant must be operated
continuously, condition which is Of
ten difficult to meet where the orc sup
ply is irregular. The Fink furnace
may be successfully run interdmittent-
ly and small plants may be economi-
cally operated. The experimental
plant at GARFIELD was designed for u.s.
ing oil. however, yet local conditions
made it expedient to use coal making
it necessary to improvise apparatus to
accomplish this after the furnace was
already on the ground. While far
from perfect. and very crude in its
conception, this improvised apparatus
has shown the possibilities OF powder
ed coal The furnace is now being
changed to use oil, and when the in
stallation Is complete it will be pos
slble to change from one form of fuel
to another without any delay. Too
much credit cannot be given to Sam
uel Newhouse, who made possible the
testing out of the furnace and process
on a commercial scale The delays in
cident to installing and blowing in OF
the furnace would have discouraged a
man of less courage and perseverance.
vet through all he never wavered an
instant What success it has been pos
sible to achieve thus far may be plac-
ed wholly to the credit Of Mr.. New
house.
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