The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1917-02-08
Bunker Hill & Sullivan Smelter Described
by the Designer.

Jules Labarthe. designer OF the
Bunker Hill smelter. contributes the
following description of the great
plant to the Mining and Scientific
Press Of February 3:
The site of the new Bunker Hill
smelter and refinery is near Kellogg,
in Idaho. The plant consists of COM
plete equipment for the sampling,
roasting, sintering, smelling and re-
fning of gold silver and lead ores. The
buildings win cover an area of 80
acres and the equipment will consist
of the following:
Sampling Mill.
The ore and concentrate will be re-
ceiyed in standard gauge railroad cars
and delivered to receiving bins, from
which the material will be removed by
belt oonveyors to the crushing and
sampling department This depart
ment will have a capacity of so tons
of ore per hour and will be equipped
with 10 by 20-inch Blake crusher,
two sets of SO by 14-inch rolls. also a
set of II by IL rolls As by 72-inch
tromme and four Vein samplers.
After crushing and sampling the ma
terial will be transferred by belt con-
veyors to any one of eight large stor-
age bins Each of these bins Is pro-
vided with two apron belt feeders by
which the correct proportion from the
bin can be fed to the belt conyeyor
and delivered to the roasting depart
ment.
Roasting Department.
The rooster building is of steel con-
struction, 112 by 81 feet in plan. and
contains four 42-mch standard
Dwight & Lloyd machines These
machines are to serve as desulphur-
izing and sintering equipment In adj
dition to the Dwight & Lloyd ma
chimes there will be one multiple deck
Wedge rooster. This furnace will be
used TO give pre- roast to lead matte
age of sulphur. The product of the
Wedge furnace will be mixed after
ward with the regular d. & l.. charge
for the purpose of further desulphur-
izing and sintering. The estimated
capacity of each d. & l.. machine Is
100 tons per day. The capacity of the
Wedge furnace is 80 tons per day.
These furnaces are equipped with
large storage hoppers, which are fill
ed by means of a belt conveyor sys-
tenn that delivers the ore from the
storage bins The sntered material
win fall from the d. & L. machines
into standard gauge hopper bottom
steel cars unloading into concrete
storage bins.
Charge Bins.
The blast furnace will be fed from
% bins of S4OO cubic feet capacity
each divided as follows: eight bins
for roasted and Suffered material
these bins are constructed of rein
forced concrete; eight bins of timber
construction to be used for limestone
crude ore, Stag, by products, etc; and
eight timber bins for coke.
Each bin has two discharge open
ings provided with arc gates. Under
each opening there is a Atom capacity
hopper scale The charge is accur-
ately weighed from the bin to the hop
per and held in the hoppers until de-
livered to the blast furnace charge
cars. The hoppers and discharge
doors are so Constructed that the ma
terlal is delivered to the charge car In
layer so that bedding effect is OBJ
tanned in the car itself,
In addition to the storage of APP
proXimately 400 tons of coke in the
charge bins there is a large coke stor-
age provided in the rear of the charge
bins where approximately 5000 tons OF
coke can be held and delivered from
the storage to the charge bins by
means of locomotive crane and clam
shell bucket
Blast Furnace Department
This building is of steel construc-
ton, so by 1926 feet. The charges are
conveyed in standard gauge hopper
bottom special design steel charge
cars from the charge bins TO the blast
furnace building. These cars are
handled by four ton electric locomo-
tives. The cars discharge directly in
to the blast furnaces. The charge
floor of the blast furnaces is level
with the bottom Of the charge bins.
The three steel iacketed blast fur
naces are ~ by $50 inches at the tuy-
eres. The height of the furnaces from
the center Of the tuyeres to the feed
floor is 20 feet inches. Each fur
mace is provided with 20 4-inch tuy-
eres. The estimated capacity Of each
furnace is 200 tons of ore per day.
These furnaces are arranged with un-
der floor down takes.
The furnace building is provided
with 20 ton motor travelling crane
tina. serves the blast furnaces and the
refinery The blast furnace receivers
or forehearths are made of cast steel
with trunnions and can be lifted and
changed by means of the electric
crane.
The bullion will be delivered from
the blast furnaces to lead pots. These
pots in turn will be handled by the