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'
Oct. 8, 1946.,
'
E. R. IMCPHETERS
'
2,408,797
ORE CQNCENTRATINGI TABLE
Filed Feb. 1, 1944.
s Sheets-Shée£ 1'
-
7 .1
Inventor
Oct 8, 1946-
2,408,797
E. R. MCPHETERS
ORE CONCENTRATING TABLE
Filed Feb. 1, 1944
'
3 Sheets-Sheet
WW 3
06%. 5'8, 1946.
E, R_ MCPHETERS '
I
2,408,797
ORE CONCENTRATING TABLE ,
Filed Feb. 1, 1944
3 Sheets-Sheet 3
Inventar
I @Mm
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I), Hi1,
’
Attorneys
2,408,797
Patented Oct. 8, 1946
‘
UNITED STATES PATENT OFFICE
$408,797
ORE CONGENTRATING TABLE
‘
Erwin R. McPhetei-s, Bois.e,.Idaho '
Application'vFebruary 1, 1944, Serial'No. 520,669
4 Claims. (C1. 209-——458)
1
This invention relates to ore concentrators, ore
pulp speci?c concentrators and separators, sluice
troughs and the like, the preferred embodiment
thereof being ideal for recoveiy and separation
‘of raw minerals, this because it is possessed of .
details and an arrangement thereof which will
properly and systematically classify the ores into
groups according to speci?c gravity, whereby ‘to
2
-
.
following description and the accompanyingil
lustrative drawings.
-
In the drawings, wherein like numerals are
employed to designate’ like parts throughout‘ the
same--
‘
'
Figure 1 is a top plan view of the ore-pulp‘re
ceiving, concentrating, separating and classify
ing unit or table constructed in accordance with
the principles of the instant invention.
provide an extra ?ne concentrate with three or
Figure 2 is a side elevation of- the complete
more lower classes of concentrates as is highly 10 apparatus or machine showing not only the ad
desirable, for best marketing values.
justable table but the retrieving bins 'for the '
‘Considerable dif?culties and perplexing ‘situ
classi?ed minerals.
,
ations attend thehandling and usage of-present
Figure 3 is an end view of the structure seen
day varied types of concentrating units in re
in Figure 2 observing it in the direction from left
covering .the minerals in scienti?c and best value 15
to'right.
groups for marketing, the handlers of such units
Figure 4 is an exaggeratedfragmentary detail
getting either one good concentrate with extra
view on the plane of the line 4—4‘of Figure 1
low production and too much value lost-i-n-waste,
looking in the direction of the arrows.
or a low grade ‘concentrate characterized by an
Figure 5 is a transverse vertical section'on the
'20
over-abundance of insolubles and waste.
plane‘ of the line 5-—5 of Figure 4.
Due to years of trained experience and research,
Figure 6 is an exaggerated detail sectional and
scienti?cally and otherwise, conducting mine
elevational view taken on the plane of the gen
operations I am familiar with various types of
eral line 6-—6 of Figure '7.
ball mills, pulp conditioning, sizing and deslimer
Figure 7 is a fragmentary top plan View of the
25
machines, concentrator-type separators, sluice
intake end of the table showing a diagonal sep
boxes and the like. That is to say, and in par
arator or partitioning unit in which a ribbed or
ticular reference to the subj est-matter with which
corrugated plate is employed to obtain a desired
we are here concerned, I arnfull well aware that
many and varied are the types of tables and
ri?le action on the'ore pulp mass.
The overall or complete structural arrange
troughs employing zig-zag sluice-ways. I can, 30 ment may be divided, broadly into two parts‘;
therefore, point out with particularity that, bear
namely, A and B. The sub-structure A com
ing in mind the already existing devices and de
prises a, framework including uprights 9 with
velopments in the prior arts, I have evolved and
enclosing walls It! of appropriate material
produced a concentrator and separator construci
and dimensions, these de?ning an enclosure
tion in which an arrangement of button-like in 35 which is divided, through the medium of trans-v
dividually and selectively adjustable regulating
verse and longitudinal divider walls H and I2
deflectors, in alternating sequence ‘at adjoining
into classi?ed mineral depositories or bins.
ends of the successive sluice-ways for grading and
As seen by dotted line picturization in Figure 1,
classifying ore pulp in its downward passage over
the complete structure is divided into eight dis
the plate, constitutes an outstanding develop 40 tinguishable bins.
ment and improvement with which we are here
The table-type separator and concentrator
unit B has a slight gravity incline, the discharge
particularly concerned.
end being hinged as at l3 to the corresponding
In addition to these adjustable ore pulp de
fleeting regulators coasting with the discharge 5 end of the sub-structure A. At the opposite end
the table or trough-walls M are provided with
ends of the grading channels or sluice-ways, nov~
suitable brackets i5 engaged by the adjustable
elty is also predicated upon the adoption and use
end of raising and lowering feed screws 16 in
of special type partitioning dividers, each divider
?xed brackets I‘! on the adjacent posts->9. The
having a plate on one side disposed at an angle
inlet or feed means for the ore-pulp is at the
to the main horizontal base plate, and the op
posite faces or sides of said partitions being bev~
eled to enhance settling of the graded or grouped
concentrates.
Other features and advantages of the inven
left hand end of the structure, this being a
channel of trough-like ‘form l8v from the de
slusher and .ball-mill or similar crusher struc--.
ture. The discharge channel is at the opposite
tion ‘will becomemore readily apparent vfrom the 55 end and denoted by the numeral I91 As pre
2,408,797
3
4
viously indicated, the bottom of the box or table,
denoted at 20, is preferably in the form of a
polished steel or equivalent metal plate. This
is provided at longitudinally spaced alternate
points with discharge openings or holes 2| in
alignment with the underlying bins. Certain of
naeite, and cadmium.
Separators l and 8 to be set at a speci?c gravity
of three (3) which will recover the following
these holes are provided with short tubes or
minerals: malachite, azurite, calamine, spalerite,
smithsonite, zincite, antimony, jamesonite, mag
netite, red hematite, chromite, pyrolusite, molyb
denite, titanium, descloizite, foleyrite,b1ueite,lln
pipes 22 having hooks 23 to accommodate detach
limonite, siderite, manganese oxide (wad) psilo
able gravity test buckets 24 made for sizing and
melane, rhodocrosite, volborthite, whartonite,
keeping a close test on each separation step. 10 and any of the other minerals that may be
Similar discharge pipes 2'5 with lateral shunting
altered or oxidized, having a gravity over waste
nozzles 26 serve to deliver the‘ remaining gravity
lime or quartz (2.6). By accurate setting 1, 2
separated minerals into their deppsitories or bins.
and 3 will produce different grade products if
The plate is provided with a plurality of
desired.
_
staggered properly angled and arranged dividers 15
Gravity is very accurate and efficient providing
or partition elements 21 of duplicate construc
care is taken to overcome existing conditions, the
tions, these dividing the plate transversely into
main items in operating this concentrator to full
progressively arranged sluice-ways 28‘. It will
efficiency is to have plenty of water ?ow and to
be noticed that the partitions 21 are so arranged
crush ?ne to separate different metals (me
as to terminate adjacent the discharge holes 2|. 20 chanically mixed). Chemically mixed metals
Thus, the ore-pulp is concentrated as it leaves
will fall between the two metals on the plate.
each sluice-way and is acted upon before it
The outstanding phases and features of the in
enters the next sluice-way, this through the
vention, structurally speaking, are the new and
medium of the double pointed deflectoretype
novel partitions de?ning and dividing the trough
regulators 29. These grading regulators are in. 25 like table into the zig-zag concentration areas or
number according to the number of discharge
sluice-ways, the discharge openings at the con
holes or openings 2|. In fact, each hole has a
necting ends of the progressive sluice-ways and
pulp grading regulator cooperable therewith and
the valving type de?ectors and regulator mem—
this is of crescent-shaped con?guration and ec
bers 29, preferably of crescent-shaped con?gura
centrically pivoted as at 30 with one point over 30 tion.
, lying and partly valving the hole. The opposite
As brought out in Figures 4 and 5, each di
end is provided with an arcuate slot 3|‘ coacting
vider is substantially V-shaped in cross-sectional
with a bolt 32 and thumb nut 33 which permits
form and provides a slanting or beveled face 21a
proper angling and setting of said regulator 29.
on one side. On the opposite side I provide a
In order to bring out a function in the system
metal strip or plate 21b. This construction and
of operation to be later described, it is desirable
arrangement is succeptible of accomplishing the
to distinguish the regulators 29 successively by
desired fast and accurate settling of the min
the numerals I to 8, inclusive. Reference for
eral laden pulp.
this is had to Figure 1 of the drawings. It is to
Reference being had at this stage to Figure 4,
be pointed out too, at this point, that the pitch 40 I desire to call attention to the fact that the plate
of the table unit A is generally very slight but it
211) is preferably adjustably mounted on the body
is nevertheless variable to regulate it to deter
21a. This is accomplished by vertical slots 31 and
mine for best recovery operations.
appropriate screws or similar fasteners 38. As
Extra water supply and delivery pipes 34 on op
brought out in Figure 5, the purpose of this is to
posite sides of the table-troughs are provided
adjust the lower edge of the plate 21a toward and
and these are, in turn, provided with jets 35 and
from the table plate 20. Further, it will be no
36 leading into the respective sluice-Ways 28 to
ticed that the partition strip or body 21a has its
liquify the mass and to facilitate spreading the
lower corner portion undercut and beveled as in
water over the plate and to thus avoid conges
dicated at 39, this cooperating with the adjustable
:ion and to make for faster and accurate separa
edge of the plate 21a to provide a concentration
ion.
pocket. I might also point out in connection with
This concentrator is designed not only to sepa
Figure 5 that the approximate degree or inclina
rate the metals from the waste, but to separate
tion of the plate 21a in relation to the table plate
the heavier more precious metals from metals
20 is 78 degrees as indicated by the arrow-head
of different character and weight, by gravity.
line 40.
Metals of different gravity may be separated
Attention now comes to a re?nement or modi
further after the ?rst concentration by putting
?cation depicted in Figure 7. In the other forms
it over a second plate and watching the gravity
of the invention shown the plate 21a can be
closely.
plain. In the arrangement seen in‘ Figure 7, the
Separators I, 2, and 3 to be set for a speci?c
plate is preferably corrugated, that is, provided
gravity of six (6), which will recover the follow
with ribs de?ning between themselves grooves
ing minerals: gold, bismuth gold, tellurium,
calaverite, nagyagite, hessite, petzite, sylvanite,
silver (native), argentite, cerargyrite, stephanite,
platinum, sperrylite, iridium, osmium, palladium,
copper (native), cuprite, lead (galena) cerrusite,
anglesite, pyromorphite, crocoite, massicot,
scheelite, ferberite, hubnerite, wolframite,
uranium, vanadilite, tin, cassiterite, quicksilver,
cinnabar, bismuth, bismuthinite, niccolite,
smaltite, and cobaltite.
'
Separators 4, 5 and 6 to be set at a speci?c
gravity of four (4) , which will recover the follow
ing minerals: ruby, silver, calcocite, tetrahedrite.
chalcopyrite, melaconite, bornite, brochantite,
and thus preventing an undulated surface from
end to end. The ribs 4| are of equal distances
apart, that is from the left toward the right as
seen in Figure 7. The two endmost ribs are more
widely spaced as indicated at 42. The arrows 43,
44 and 45 designate generally the course of ac
tion of the pulp.
'
Referring again to Figure '7 it will be observed
70 that the end of the partitioning device 21 in prac
tice terminates about one foot from the adjacent
wall of the table. The adjacent pointed end of
the crescent-shaped regulator 29 is disposed in ap
proximate alignment with the pocket or groove
de?ned by the undercut surface 39.
This is
2,408,797
brought out by the dotted line. In practice the
adjacent point is approximately one-quarter of
an inch from the end of the divider or partition
21. The distance of the point from the partition
is increased about one-quarter of an inch in each
succeeding step. The device 29 is to be about
eight inches in length and the left hand pointed
end (Figure 7) laps the concentrate holes 2|.
This being, in practice, about three and one-half
inches in diameter. The crescent-shaped sepa
rator itself is about two inches in height, this be
ing two-thirds of the height of the partition unit
6
named divider and its opposite end overlapping
and cooperable with the discharge opening.
2. In an ore-pulp concentrating and separating
table unit, a bottom and a surrounding marginal
wall, a pair of transverse partition dividers on
the bottom, a discharge opening in the bottom at
the free end of one of said partitioning dividers
and adjacent the intermediate portion of the sec
ond-named partitioning divider, and a crescent
shaped regulator element eccentrically pivoted
on the base with one point adjustably movable
toward and from the free end of the ?rst-named
partitioning divider and the opposite point over
21.
lapping and co-acting with the discharge open
Reviewing the principle of operation of the ar
ing, said regulator element being adapted to
15
rangement depicted in Figure 7 it is evident that
function not only as a valving element for the
the pulp and water coming in at the inlet [8 will
opening but as a de?ector, whereby to cause
travel along the ri?led surface 4| of the plate 211)
certain of the currents to pass between it and
with reasonable velocity, the water and pulp con
the
free end of the partitioning divider and other.
tacting the ri?ies being agitated and thrown away
portions of the currents to pass and sweep around
from the riiiied surface in a downward and out
its curvate edge in the direction of the interme
ward direction as indicated by the various arrows
diate portion of the second-named divider.
43. This spreads the pulp over the plate 20.
3. In a structure of the class, described, an ore
When it reaches the end of the riiiied partition
pulp concentrator and separator table compris
the pulp will be washed away with more direct
ing a flat bottom, an intake in one end, a diagonal
and added force over the regulator, that is, the
partition secured to said bottom and engaged at
?rst pointed end of the regulator 29. The heavier
one end with the wall of a table adjacent said in
ores are washed down to and over the plate in
take, the opposite end being spaced from the
such a manner that the heavier ores will remain
opposed wall of said table, said bottom having a
below the lighter pulp on the plate and will (from
discharge hole therein adjacent the last-named
natural gravity) gradually settle into the pocket
end of said partition said partitioning device
or space 39. Then upon being forced and washed
being provided on one face with an undulated
plate for ri?‘ling the mass of ore pulp, and a sub
apast the regulator 29 will permit the heavier
ores to settle directly into the exit 2| and will
stantially crescent-shaped adjustably mounted
force the lighter ores and waste .to wash around
regulator on the bottom of the table and having
35
the outside, that is, the convex surface of the
one pointed end adjacent the coordinated end of
regulator 29 into the next sluice-way to be treat
said partition, the opposite end shiitably covering
ed similarly,
a portion of said hole, this to govern the size of
It is thought that persons skilled in the art to
the
latter.
which the invention relates will be able to ob
4. In a structure of the class described, an ore
tain a clear understanding of the invention after 40 pulp concentrator and separator table compris
considering the description in connection with
ing a ?at bottom, a diagonal partition secured to
the drawings. Therefore, a more lengthy descrip
said bottom, said table having a surrounding up
tion is regarded as unnecessary.
standing wall, said partition being secured at one
Minor changes in the shape, size and arrange
end of said wall, the opposite end thereof being
ment of details coming within the ?eld of inven
spaced from an opposed parallel wall, said bottom
tion claimed may be resorted to in actual prac
having a discharge hole therein adjacent to the
tice, if desired.
last-named end of said partition, said partition
Having described the invention, what is claimed
being substantially triangular in cross-sectional
as new is:
form to provide a bevel surface on one side, a
1. In a concentrator and separator table unit 50 plate secured to the opposite side, said plate being
for ore-pulp, a base plate, a transversely arranged
shiftably mounted to vary the distance of its
divider partition on said plate extending from one
lower edge toward and from the bottom, and that
side wall and terminating in spaced relation from
portion of the partition below the lower edge of
the other side wall, a second divider partition ex
plate being undercut to coact with said bot
tending from the last-named side wall and having 55 said
tom
and plate, and a substantially crescent
its free end portion terminating in spaced relation
shaped, adjustably mounted combined regulator
to the ?rst-named side wall, a discharge hole in
and de?ector on the bottom, the latter having
the plate between the free outer end of the ?rst
one pointed end adjacent to and co-acting with
named partitioning divider and adjacent inter
mediate portion of the second divider, and a piv
otally mounted manually adjusted regulator and
de?ector element on the plate having one end
cooperable with the adjacent free end of the ?rst
60
the corresponding end of said partition, and the
opposite end shiftably covering a portion of said
hole, this to govern the size of the latter.
ERWIN R. MCPHETERS.
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