Rock Island Argus. (Rock Island, Ill.) 1893-1920, 1899-12-14
FOR TREATING GOLD ORE
New Process Discovered by a
Philadelphia Physician.
MINING EXPERTS INTERESTED
Experiments Carried on I'm the Black
Hills by DIR. oEden-Iron and Other
Metal. Extracted From the Ores by
the Use of Powerful Magnets.


Hills by DIR. oEden-Iron and Other
Metal. Extracted From the Ores by
the Use of Powerful Magnets.
| DR.. ]. \. Ogden of Philadelphia has
made a discovery in ore treatment that
is destined TO revolutionize the present
| methods for extracting the precious
metals from the rock. The inventor
has been working on his process for
| years, and he has now perfected it to
such a degree that by actual tests he
| is able to treat 80 per cent of the ores
of the Black Hills, says the Chicago
| Record His process is so simple that
| ii is wonder that the principle has
not Deen put to work years ago. He
has n small plant in successful opera
ton near Deadwood, S. D., which is
being visited by mining men from all
parts of the country.
DR.. Ogden has worked at his plant
for year or more, keeping his secrets
to himself His process, briefly, is this:
He has a 20 horsepower engine, q $50
light electric dynamo and a rooster.
The ore is pulveriZed to a fine mesh,
fed on TO the upper end of the rooster,
which is nothing more than 4 long
piece of sheet iron at an incline, under
which q fire is built and screened
through an so mesh. The ore is then
carried to the magnetic separator. The
powdered ore drops on to n wide belt,
across which there are three narrow
belts running at right angle. Above
each narrow belt there is a powerful
magnet, which is made alive by the
electricity generated in the dynamo.
The ore, which contains large per
cent of iron., passes along under the
magnets. which quickly pick up every
grain of iron. drawing it against the
belts which run crosswise with the
wide belt. AS soon as the iron is car
ried out of the magnetic field, dis
lance of ten inches from the wide belt,
it is all dropped and falls into a bin.
There is left on the wide belt nothing
but sand and the gold or other values.
The process is intended to take out OF
the ore all the iron or other magnetic
metals. which are usually a detriment
to the successful reduction of the ore.
1t is estimated that 90 per cent of the
ore in the Black Hills is pyritic, or. in
other words, carries iron. The ore in
the Homestake mine contains from so
TO GO per cent. DIR. Ogden will do this
with the Homestake ore: He will take
1t from the mine, pulverize it TO an so
mesh and run it through the magnetic
belts. All OF the iron will be taken
out-say so per cent TO the ton. That
would leave 20 per cent sand and gold,
equal to 400 pounds to the ton. Five
tons of raw ore can then be concen-
trated into one ton of sand and values.
The iron being out of the ore, the sand
and values can be run over the ANAL
gamating plates, and practically all of
the gold will be caught by the quick
silver. This eliminating of the iron
from the Homestake ore would mean
the saving of several hundred thou
sand dollars worth of gold every year.
DR.. Ogden has put down on paper a
guarantee that he can save 100000 a
year for the company.
There are millions and millions of
tons of ore in the Black Hills that have
value of So TO 50 ton gold. Most of
of iron. The Ogden process will elimi- |
nate all of the iron and make 1t posi- |
BILE TO put from one to ten tons, by con- |
centration, into one. BY Il chemical |
process, known only to DR.. Ogden, he |
W
ic belts and extract the values for GO |
cents per ton. To separate the iron |
from the product will cost less than % |
cents per ton. The claim of the Og- |
den process is that 1t will extract the |
values from 90 per cent of the Black |
Hills ores for less than 81 per ton. The |
pyritic ores are made magnetic by |
passing them through the rooster. |
f,l, .I,.f, oh Of
the sulphur, thus making the iron pre-
dominate, when it becomes magnetic.
Since the first announcement of the /
success of the Ogden process. the ex-
perimental plant has been visited by |
the mining experts from all parts of
the country. and the large mining COM
panies have kept their experts at the
plant investigating its merits. 1t is
believed by those who have examined
into the principle and it's application
that the process is destined TO revolu-
tionize the present methods of treating
ores in the world. DIR. Ogden has made
a great many tests on ores from Colo
RADIO, the sands of the seacoast. the
gold sands from Snake river, in Idaho.
and from New Mexico and he has met
with great success in every test
A company is being organized in
Deadwood TO erect plants, first in the
Black Hills and afterward in other min
ing districts. DIR. Ogden. the inventor,
Is n graduate of the University of
and has been practic
ng physician at.Philadelphia for years.
Vow For the New Fire Brigade.
Now that the automobile is coming
into such general vogue that all the
traffic OF our cities bids fair to be /