The Idaho recorder. [volume] (Salmon City, Idaho) 1886-1927, 1920-04-02

salt is automatically fed by means
of a similar feeder and the ore ana
salt is discharged onto an inclined
cross conyeyor which raises the mix
to the distributing box leading to
the hopper over the volatilizing fur
mace A plunger feeder forces the
mixed ore and salt into the hot fur
mace where by a motion OF rotation
the mix is advanced down the
slightly inclined furnace to the dis
charge END.
Immediately the heating material
attains a bare red heat the salt ana
copper minerals react together ana
chloride of copper Is formed and yap-
orized. The result is dense light
colored smoke or fume which is
swiftly carried out of the furnace in
to the fiue and dust chamber. Here
any fine ore particles that have been
mechanically carried over settles OUT
of the furnace gases and leave the
more finely divided copper chloride
fulne to be forced by an Ilg ventila-
tor fan into the Cottrell precipitation.
The fume enters the Cottrell pre-
cipitator in a lower header box with
la double hopper bottom. Through
the top of this header passing down
into the header box seven feet are
36 eight inch iron pipes Is feet long
hanging vertically open top and
bottom. In the center Of each pipe
is suspended a fine iron wire with a
20-pound weight at the lower end.
These wires are insulated from the
rest of the structure and are sup
piled with a high tension current of
electricity of $1,000 volts. This cur
rent is a pulsating direct. or better
iunidirectional current obtained from
a rectifler operator with synchron-
GUS motor. AS the high voltage cur
rent gives a sort of brush discharge
from wire to pipe the particles of
"copper" chloride fume are electrified
and deposited on the inside of the
pipe or on the wii'e. Under the con-
Editions of such high voltage atmos-
phere no fumes escaped with the
furnace gases up through the pipe.
lAll the fume is thus deposited. At
Intervals the pipes and wires are
shaken and the fume drops into the
hopper bottom 2rom whence it is
taken by closed cars or barrows Ia
, 1.-THE mixing floor where lime and
coke are added ready for the fus
ion in the bullion furnace. In this
,, furnace d. F. c. potless fitting fur
mace, the copper chloride reacts with
, the lime to give calcium chloride
and the powdered coke keeps the
copper in the metallic condition.
; Calcium chloride Stag and copper
blsllion are therefore poured from
, the bullion furnace. When the sec
ond unit is provided a screw con
, veyor will feed the fumes, lime, ant
: coke dust into bucket elevator
. leading to hopper over the bullior
, furnace and the mix will be dropped
into the fusion furnace without an!
!. hand labor.
The tailings from the rotary vol
atilization furnace are dropped Int
: stram of water and sluiced oyel
the dump. Thus the ore comes from
tunnel mouth to tailings dump with
q out anything but mechanical hand
|, ling and the copper is all taken ou
!, as fume and reduced TO metal read.
!. for the refinery. The Pope-Shenol
q is the pioneer of the above des
= cribed process. The preparatory eS
o perimental work has been done a
:. the Metallurgical Research labora
v tories of the United States Burea
!. of Mines and University of Utah a
a Salt Lake City. In return for result
I obtained in the new mill here a
!. Salmon the United States Bureau c
Mines places at the service of tn
a Pope-Shenon company its technica
T. staff for working out the proces
# on a commercial scale TO successft
r operation
n DR.. Robert H. Bradford. professo
= of metallurgy al the University
" Utah, is now in charge of the insta
e lation work at the Pope-Sheno
mine, representating the reseac
{, Laboratories at Salt Lake where h
II has had charge of the experiment.
It work on the process. He is enthu
Iiastic in his report of progress du
o. ing the six weeks he has been
~ charge of the work at the Pop
At Shenon and is looking forward
,s the time for actual operation of tn
Of furnaces.
/. Many interested mining men an
10 metallurgists over the United State
,s and from foreign countries are ma
IN ing inquiries to the company and
10 the research laboratories at Sa
ID Salt Lake concerning the progres
IN of the Pope-Shenon plant and fro
ii. the letters received there will
many visitors ready to cmoe in to 81
re the plant when II starts up.
m The facts that the whole proce
in can be carried on without wate
m that the metal is TO be shipped fro
no the mine as bullion, that the pr
to cess is applicable 10 oxidized copp
ores as we'll as to copper COLDS
nc lyer ores make the new plant an @
- ;act of esnecial interest TO the maj
ps inquiries.
N. Or. Bradford in Salt Lake.
he DIR. Bradford is leaving for Sa
nd Lake tomorrow TO visit his spec
.et charge in Utah university, where
ed coordinate, Prof. Lewis. is report
ny i'll. DR.. Bradford expects to be al
gh to return TO his work al the Pol
ms Sheno within two weeks, when
Id w. Clark an electrical enginne
- will enme in with him to install [