The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1897-05-16
THE ELLIS CONCENTRATION.
A Mill That is Attracting Great
Deal of Attention.


Deal of Attention.
A great deal Of interest is being
centered at the present time in the new
Ellis concentrator and quite a num-
Der of mining men are making a
critical examination of this machine,
which is now installed at the old
Burton-Gardner works on Eighth
South, between Main and State streets.
The Ellis concentration. while much
resembling the old-time COMMENTATORS
has much different action. and from
tests made on refractory and low
grade ores in this CITY, it has been
demonstrated that ii is capable of max
ing a very high saving of values, and
mine-owners who have witnessed its
workings speak highly of it.
The concentration. in its operation,
has a series of movements so similar
TO that of Danning that but very
small per centage of the values can
escape. and the concentrates come out
as clean and fine as could be desired.
In the circular sent out by the COM
pany, the modus ooerandi is more in
diligently explained, as follows:
The rubber belt upon which the
pulp is conveyed from the battery or
other pulverizing devices, is a travel
ing or moving one as used on many
other concentrators, but differs radi-
cally from all others. in that it is
filled with shall ''batea" or pan like
depressions and when the machine is
in operation a gyratory or circular
motion is impaired to the travelling
belt, and to each one of the many
bataes, so that the motion and the
result produced is precisely like that
impaired TO the batea or miners pan
by the most skillful hand.
IF during the operation any of the
heavier metal bearing portions of the
pulp or concentrates escapes from one
of the bateas, it will certainly be
caught UP by some of the many hum
dreds of the others, and be perfectly
separated from the gangue or lighter
portions before it reaches the upper
end of the travelling belt to be de-
posted in the receptacle attached to
the machine for that purpose.
The concentrator works very rapid
". and from practical working tests
it is demonstrated that the four-foot
belt machine will handle from 10 to 20
tons of ordinary pulp in "A hours, and
that the six-foot belt machine will take
care of double that quantity of like
pulp in the same time.
1T has been shown that all the gold
and amalgam which may escape from
amalgamating plates of the mill will
be caught uDon the belt of the ma
phurets.
The machine is not only a very
rapid but a very close worker, and the
values saved, as shown by various
tests upon ores difficult to concentrate,
were upwards of 80 per cent.
Quite a number of test runs have
been made on this machine during the
past three weeks with the result that
il is more than likely that a number of
? frsat ordered
Utah companies. A week ago a run
was made on Anchor jig tailings that
carried 10 per cent lead and 80 per
cent zinc The machine separated the
lead from the zinc leaving only
fraction of per cent of the lead values
in the tailinSs, and the product was
fine clean and very high in grade
+ A run was also made on Silver King
second-class ore carrying 20 per lead
and some silver, and the result was
equally as satisfactory; while a test
was made not long ago on gold ore
from the Rescue mine, in Rose Bud
district and the concentrates showed
values of 1872 to the ton. while but
trace of value could be found in the
tailings.
A test run was also made on ore
from the Highland Boy mine, at Bing-
ham, and while the results have not
been made public, it is understood
that they were very satisfactory
The test of yesterday was made on
low grade ore from the Dexter mine,
AT Tuscarora, and the rock which had
the appearance of being almost mill
ing proposition, yielded readily to the
treatment and the concentrates were
both fine and rich. much TO the salts
faction of the company, which is con-
6dent that with this machine 1t can
handle this class of ore at a profit, ana
within the next few days it is the in
tention to make an experimental run
on tailings from the Dexter mill.
In all of these tests nothing less than
500 or 1000 pounds of ore are treated.
The mineral is assayed before 1t IS
crushed after it is crushed and before
il goes into the concentration lin the
shape of pulp. and after the residue
comes out in the form of talllngs, so
that it is possible to tell to a fraction
what percentage of saving is made.
The crusher used is one invented by
Prof. Lewis of this city, and 1t has
proven a success as it grinds the ore
into an impalpable pulp. liberating all
of the metals contained in the rock, the
result being that the product of the
machine comes out in nearly pure
state.
The inventor and patentee of the ma
chine is Henry Rives Ellis, a son of
Colonel A. c. Ellis of this city. The
concentration is manufactured in San
Francisco but as the right of patent
is now owned by a Utah company, it
is the intention to begin its manufac-
ture and sale in this city.
These experimental runs are being
made at the cost of the company, and
during the present week the concen-
traitor can be seen in operation almost
any day at the place above specified.
From all indications it is valuable
invention and just what is reeded in
the treatment of lowgrade ores and
tailings.