The Owyhee nugget. ([Silver City], Idaho) 1905-1984, 1911-11-16

- ~ yN0i Sou pier WAiCu tdkSn u Cut
Of per cent. The sampler cut is de-
livered to sampling plant which pre-
sents no novel features. The finely
crushed material is delivered to l6-in.
rubber conveyor belt, already referred
to, and is carried up 2O-degree slope to
vertical elevator which delivers the
crushed ore to three, round steel ore bins
situated at the head Of the chemical
treatment plant. The combined capac-
ity Of these ore bins amounts to 800 tons.
Each bin will store different character
Of material, and they are arranged SO
that they will each feed a separate CLASH
fer The classitiers are of simple design,
merely consisting Of trough, in the
bottom Of which l2-in. screw is operat-
ing.
The fine shines washed out by the
classifers are delivered Immediately to
the agitator system and the oversize,
which is diluted to proper degree Of
thickness, feed a Stearns, Roger spiral
trunnion tube mill IS #. long and S it.
in diameter. There are three tube mills,
each with its own closed cycle and each
crushing to a different degree Of ffneness
adapted to thecharacter of the ore which
each tube mill is receiving.
The crushed pulp is elevated by air
lifts of special design both from the de-
livery end Of tube mill and from the
slime discharge of the classifer. The
ore is crushed in solution.
The slime goes to a special design agi-
tator. There are five agitators, each Of
capacity Of from so to 100 tons Of dry
slime. The pulp will have ratio Of one
ton Of ore to Is tons Of solution. In the
agitators there are 20 electric baskets
for the purpose Of electrolizing the So
luton. Each electrode basket has an
anode surface of about so. it. and
with capacity of So amperes each. The
electrodes are carried on,heavy steel rail
bus bars. The current is furnished by
a General Electric Is XIV. generator
arranged to deliver 5000 amperes at 5
volts, or 1,500 ampers at 10 volts. BY
means Of field resistance the voltage OF
the generator can be regulated to any
thing between five and ten, with CORES
bonding amperages. The delivery Of
the current is regulated to each agitator
by means Of Westinghouse switchboard
The ore which will be crushed to $50
mesh screen approximately is agitated
for "a hours with low pressure air de-
livered by the mill compressor, although
the air system is connected with the
mine compressor giving air at 100 lbs
in case of emergencies.
After agitation the pulp is delivered
directly to the loading tank Of the Moore
filter plant with filtering area of about
$500 50. #. and capacity of about 200
tons of dry slime daily.
The Moore filter plant offers some
novelty in that the crane is entirely
operated by hydraulic power, both for
lateral and vertical motion The hyd-
raulic cylinders Of the crane work at
pressure Of from $50 to 300 lbs. Water
is forced into by u it. accumulation
by means Of a belt-driven Deane triplex
pump with plungers PA in. and max
ing Gin. stroke. This pump consumes
about h. p, which suffices for the oper-
alton Of the crane. The power CONSUME
ed by this filter plant compares favor
ably with any installation now in ex-
istence. Tee use Of tine eqnalized load
furnished by hydraulic pump COM ares
favorably with electrical cranes both for
economy and ease of operation.
The clear gold solution delivered by
the filter spstem is precipitated by zinc
dust fed intermittently by means of
tripping arrangement operated by the
flow of gold solution. The precipitated