The Placer herald., 1868-02-29
New Method Of Saving Sulphurets.

Messrs. Kearson & Brother have invented
what they call sizer," which is to wolk
with the Amber shaking tables to facilitate
the saving and washing of the sulphure,s Of
the quartz pulp, without the loss sustained
by all /; mill men after adopting the most
approved methods of saving gold and gold
bearing sulphurets from the crushed quartz
The sizer is Of sufficient length TO extend
from the battery Is to 20 feet, and in d'
rect line over the shaking tables about 25
feet. There are three in operation at this
mill. They are about thirteen inches in depth
| and in width seven inches, prepared with a
false bottom down about three inches from
the top Of the box, over which the water and
quartz pulp flow. Under this false bottom,
of screens Of various sizes are partitions about
three to five feet apart ; in these spaces are
boxes Of V shape with apex affixed to the
bottom of the box, ,hroug gh gagged aperture
in the side Of which, the water with the sized
particles of pulp admitted into the box
through the screen or false bottom flows,
this flows into shallow box which is con-
tinuous with the rest ; at different points it
is allowed to flow down into the shaking
tables below. The water which carries the
quartz pul p upon the screens is gagged from
the mill and each aperture Of the shaped
boxes is SO gagged that the V boxes are kept
full of water, and in running 20 feet most
all of the water fluids its way through the first
screens, and any light particles of rock find
their way along over other fine screens of
26 feet in length; alter this, the tailings which
have passed over this line are considered
worthless; very small quantities Of sulphurets
are found under the second set of screens, as
the principal part of the sulpburets, coarse
and fine, are screened out in the first set of
boxes, and pass through gage apertures intoa
shallow box with rifles which box continues
TO and upon anoleer set of screens which, at
the head of the box is the finest, and coarser
every three feet,for 8 or 20 feet by this means
the sulphure,s are here deposited through
each screen 10 the sized particle the screen
permits to pass, when it passes down into the
shaking pans you have only the same sized
particles to contend with and the motion OF
the pan easily gives every particle. be it
rock or supburels, its position as the spe-
cific gravity indicates. The snlphurets are
thus settled over gagged aperture and there
drawn off TO the exclusion Of the puverized
rock. Quartz miners have been aware OF
the great loss OF gold and gold bearing
suphurets they have sustained after adopting
all the improved methods for saving the
same but have not succeeded before. We
think Mr.. Kearson has bit upon the plan
at last.
The great difficulty has been where
large particle of rock passes off through their
concenrators small particle of sulphurets
would pass. Under the stamping process,
much Of the rock and sulphurets are pulver'
lied very fine before they pass with the
coarse through the screen at the battery, so
it renders it impossible to prevent a great
loss of upburels. With the use OF The
Improvement herein described, we are cen
ident that this invention will be success,
and will work great saving to all quarts
miners. Mr.. Kearson is now working the tail
lings Of the Couey & Biglow mine-those
which are thrown away as worthless. and he
is getting large quantity OF su'phurets
from them, sufficient to pay them we'll for
working, and also the owners OF the mine
from which they are taken. 1t makes quite
a revenue to the Coney & Bglowimine, which
was counted loss. So much for improve
ments in the saving process. We hope at
some future time, TO give The practical esti
mate, in saving, more deflinilely.-Amodor
Dispatch