Arizona republican., 1915-05-23
railroad cars discharge

verse pit, to which the ore flows
through gate protected side openings.
This belt discharges to a cross con-
veyor which takes the ore to the
furnace car-loading track under the
bins, or to another conveyor serving
the crushing and sampling plant
Ore from the bins which does not
require crushing is drawn out under
meath to the charging cars, through
weighing hoppers. The larger por-
ton, however. is carried by belt con-
veyors from the storage and hin con-
veyors to the crusher plant. There it
discharges to an Allis- Chalmers
S0X1S-in. jaw crusher, of the Blake
type, driven by a 50-hp. Westing-
house motor, the product of which
passes up a long incline belt con-
veyor, with capacity rated at 24OO
tons daily, fit. per second, to the
top of the sampling mill.
This mill is arranged in the usual
two sections. having three 2Ox1O-in.
Blake crushers equipped, like the one
above mentioned, with magnes.. steel
Jaw plates; three sets of Allis-, hal
mers crushing rolls 54x24, 36x12 and
24X12-in., the first named being of
the Anaconda type; two 4x14-ft
Gates trommels with dust Jackets
and Manganese steel coverings. and
four Snyder samplers ranging in size
from so to 81 inches, with 10. 30. 90
and 1910 cuts; so that the final
sample is as l to $50. 1t passes. at
the end, to a sample safe and steam
dryers in the laboratory department.
where small Blake crusher, Sturte-
want rolls and Denver Engineering
Works sample grinders prepare it for
testing
The product of the crushers in the
sampling mill, including sampler re-
Jectlons is handled by a system of
belt conveyors SO arranged that it
can be sent back to the storage bins
for fines. or carried over Ia the cal
clning plan by another incline CON
Veyor running at a riga angle to tie
first.
The entire conveyor system was in
stalled by the Webster Mfg. co. and
the rubber betting was furnished by
the Gutta Percha & Rubber Mfg. Co.
rms system is exceptionally extern
sive and complete. comprising 10 dis
tlnct units; so that manual labor for
any handling of the ore has practic-
ally been eliminated.
to six 2114 1T. Wedge furnaces. each
of which has capacity of SO tons in
"A hours. The hearths, six roasting
and one drying. are lined with con-
crete. Being built on the unit sys-
TEN, the plant can be enlarged in
definitely as required, and the pres
ent plans provide for eight furnaces.
Cooling blast is furnished by one
of two No. 6 Sirocco. 3-oz. blowers.
each driven by a 30-hp. 440-Volt
Westinghouse motor, and having a
rated capacity of $4,000 Gu. it. of free
air per minute. Either, as used. dis
charges into a concrete blast tunnel
The calcines are drawn out, under
meath, the furnaces into 15-tOn, dou-
ble-truck kilbourne & Jacobs cars,
each 16 it. long, # ms. wide
and it. ms. body height, which
also take the flue dust These are
hauled by lotion Jeffrey electric To-
comotives.
The revolving mechanism of tbs
furnaces rests on roller bearings and
each is so nicely balanced that a mdn
can turn a furnace, when the hearths
are loaded, the entire plant requires
only a 30-hp., 440-volt Westinghouse
motor for revolving all of the units
with power to spare
For starting up. before the sui
phides begin self-rolS-11, there are
oil burners of the type designed By
the Schurs Oil Burner Co, OF Los
Angeles.
The dust chamber. to which he
fumes from the Wedge furnaces are
conducted by a 13x13-ft. brick flue
to the 40O-ft. stack. It contains two
sets of maffle plates. each ms. wide
and No. 10 gauge. set 10 TT. from
either end of the chamber, and with
only q in. space between plates In
the center wire cables are suspended
to form an additional BATTLE Tho
dust chamber building is 149 it. long
and 80 it. wide, with sides of steel
and brick and roofing of 24-gauyge
copper, protected and insulated by
concrete. 1t has a W-shaped collect
ing bottom, with six discharge hop
pers. from which the dust is drawn
off into calcine cars Both calcines
and dust are weighed, in transit to
the reverberatories. on a Acton Buff
falo scale.
The calcines. with oxidized ores
from the "Outcrop" and fire zone"
of the mine, are fed to three 19x1OO-
one end of the furnace building in
an erea 145x113 fit. Charging is done
through center holes corresponding
to the double-hopper bottoms of the
cars, and fettling through openings
on each side, from small cars running
on tracks suitably ioCarei fer the
purpose. The lining is OF silica brick
Of Standard manufacture
Stag is drawn off into Treadwell
motor-tilted pots, on single trucks,
drawn in trains by an 1S-ton JEFF
frey electric locomotive, which hauls
it to the dump. There aIc three of
these locomotives in service. Mates
from the reverberatories as well as
the rich oxidized and sulphide ores.
both ferrous AMI silicious, together
with some calc.te to provide the sG-
ditional flux required. are smcited in
four 4Sx320-in. blast furnaces, con-
sisting of white irol crucibles sup
ported on steel framework. The lai-