Douglas daily dispatch., 1927-01-06

try out q lead SmelClnS property:
In abandoning some of the old plant
we have put in plans for operation
Of lead smeiter. We hope con-
struction to go straight ahead until
we are ready to blow in lead
Jacket. We are putting in lead con.
centrators in Bisbee and designs fo1
that plant are. being carried on
under direction of H. H. Pratt. 1t
will be primarily small mill, but
we hope it will grow later on"
The entire party was then taken
for tour of the new plant. Fol-
lowing inspection of the pumping
rooms where the boiler feed pumps
and the pressure oil pumps for the
reverberatories and the feed watel'
lines which utilize the exhaust steam
for feed water, the group visited
the number one reverberatory. The
entire party was transported to the
top of the eight-story, 144-foot high
plant by electric elevator.
The ore is conveyed to the top OF
the plant by carrier or conveyor belt.
The number one conveyor takes tho
ore from the receiving bins and de-
livers it through Division, one hall
to the north and the remainder to
the south roaster bins. There are
twelve of these bins, six north and
six south. Floor eight is the treatel
operation floor.
The Cottrell boxes are those IN
which tn gas from the roaster
passes through boxes and into pipes
which are electrically energized, the
ultimate voltage Of energy being
from $4,000 to $4,000. The wires are
energized so that the metal in the
Gust is carried to the negative side
of the tube When the accumulation
is heavy enough on the side of the
tubes, hand rapper device knocks
the dust into the bins at the bottom
of the treater box. The rectifierS
were then visited, as were the top
roasters ON dry hearth Ore passes
through the bottom of the ore bins
on apron feeds which discharge the
ore to the dry heagth of the roaster-
It then being carried by rabble arms
and fed into the center. The process
is, carried out over each hearth, or
which there are II, from where it is
discharged to the calcine bins. There
are 12 roasters in the entire installa-
tion. Each roaster has IL hearths
boilers are in the waste heat plant
which utilzes the waste heat from
the reverberatories and generates
steam which is carried to the power
plant. The boilers are arranged ir
groups of four at each end OF th9,
reverberatories.
The roasted ore falls by gravity
into the calcine bins, which run
ioner tudinally along the reverbera'
tory furnaces.
Every possible modern safety de.
vice has been installed for the pro'
lection of the plant workers.
Those present were p. c. Beckett
G. H. Dowell, d. D. Davis, j. A. Shep-
ard. J. w. Davis, j. L. Hastings, c. l.
Howe, C. LeGrande, H. H. Pratt, Folsom
| Moore, H. H. stout, l. J. Simcox, p. z.
| Robinson, George Drysdale A. G.. Nc
Gregor, C. w. Cromwell, G. H. Wynne,
B. Wilson, H. L. Kolberg, p. +. Ran
kin, H. L. Hall, Joseph Gordon, L. G.
Amber, Curtis Pigot p L. McCabe,
Gus Nelson, Sr., r. l.. Harsell, Ray
! Wiley, william Eichbaum, c. A. Pay
| lor, ]. M. Samuel, H. L. Humes, A. w.
| Cotton, C. w. Bunskog, L. L. McDan-
iels, H. J. Brispols, B. Allen, A. E
/ Hinton, e. c. Macy, George D. Neville,
| j. F. Boileau, A. S. Moore, w. B. Ev-
ans. ]. F.. Ritchey, H. w. Wylie, S. Car
| penter, c. L. Tucker, J. j. Guilfoyle,
A. j. Clarkson, M, f. Hayes, d. w.
Foster, T. Bopp, J. L. Goodson, F.
Merkt, w. H. Dorsett, R. B. Woods,
Mrs. Fern NJ. Hornbacher and William
Fraley McCafferty.