The Goldfield news. [volume] (Goldfield, Nev.) 1904-1911, 1905-12-01

lines of tanks and can be used over any
desired tank. After teaching, excavas-
ing and re-distributing a number VI
times, the sands are finally delivered b.
the central conveyor to a second con-
vevor which carries them to a failing
stack at the end Of the building. The
shines passing from the fine classifiers
are first treated in the two collecting
tanks CSC by 20 feet) which have cir
cular launders around their upper
edges. These tanks also have two sets
of a~gitator arms on a vertical shaft,
making 5 r. p. m. The nine agitatois
in the SO by 20-foot tanks are driven
by a centrally located 30-h. p. motor,
through a line shaft running over the
center Of the tanks; this operates the
agitators by bevel gearing, with q frie-
tion clutch pinion for each agitator.
The s-inch pipe lines run over the
nine slime tanks, with valves at eacn
tank; a 10-inch suction line runs be-
low, with a valve connecting to each
tank. This suction line connects to an
s-inch centrifugal pump, driven by a
direct-connected ooh. p. motor. The
pump discharged into one of the 3
inch lines mentioned) is used for trans
ferring slime from one tank to anothe-.
A duplicate ''spare" pump is con-
nected to another S-inch centrifugal
pump, drawing solution from any one
of the three 40 by s solution tanks. A
swinging decanter of 4-inch pipe is ar
ranged in each slime tank; this IS
raised and lowered by a small winch.
These decanters connect to a 4-inch
line leading to the gold tanks. An s.
inch pipe line leads from the slime
pump mentioned to the two 40 by 20
foot clarifying tanks, which have bot
tom discharge regulating valves
through which the exhausted slime -
drawn off to the failing dump, while
the clarified solution is decanted anu
returned to the gold tanks. A 4-inch
centrifugal pump with individual
motor on base, forces the solution from
the two 80 by S-foot tanks to the sand
plant through 4-inch lines leading t.
the "a teaching tanks. The S-inch soln-
ton pump also forces solution to the
20 by 40 battery storage tank above
the mill.
The Is zinc boxes each have seven
compartments, 8 by 3 feet by 2 feet 8
inches inside. The 20 by s-foot purif.t-
ing tank, with agitator, is used in con-
%nection with a filter press and triplex
pump for purifying solutions. The
rectangular filter tank, of steel, is used
in connection with a belted acuum
pump for clarifying solutions. A Sec
ond triplex pump is provided with a
main pipe, having a number of short
hose lines, for emptying the zinc boxes.
1t is also used in connection with the
acid tank; agitators in this department
are driven from an overhead line shaft,
using a 10 h.. p. induction motor.
The reverberatory drying furnace
with hearth 6 by 10 feet) and the six
melting furnaces, are to reduce about
so tons of slime per month. Individ-
ual motor drives are used for convey
ors, centrifugal pump, sand pump, sand
wheel, excavator and distributor. Three
similar motors (each of $50 h. p.) drive
the stamp mill and the crushing and
sampling plant, the pumps and a large
filter press. AS there are several mo-
tors of each size used, but few spare
parts are necessary.
The metallurgical engineering of
this plant is in the hands of Godfrey
Devotion; the mill is expected to be
in operation early in 1906.