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Патент USA US3042213

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July 3, 1962
F. E. CLUTE
3,042,203
AIR-FLOW MATERIAL SEPARATOR
Filed Aug. 17, 1959
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United States atent O " 1C6
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3,042,203
Patented July 3, 1962'
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stantially conical passage 36 between the passages 32 and
7
34.
3,042,203
'
'It is to be speci?cally understood at this juncture that
the bulges 28 and 30 might well be reversed or inverted,
placing the apex end of passage 35 adjacent tube 16.
AIR-FLOW MATERIAL SEPARATOR
Francis E. Clute, Rocky Ford, Colo., assignor to J.E.T.
Pellet Mill Corporation, Rocky Ford, Colo., a cor
poration of Colorado
Collector 10 includes a hollow body 38 having an
Filed Aug. 17, 1959, Ser. No. 834,092
8 Claims. (Cl. 209-—144)
uppermost cylindrical portion 40 provided with a top
42 through which tube 16 passes centrally, terminating
in a lowermost open end’disposed within a frusto-coni
The invention relates to a mineral or feed separator, 10 cal portion 44. The lowermost end of the portion 44
and primarily to an ore sorting apparatus for separating
'
comminuted or pulverized metalliferous material from its
gangue through employment of arti?cial currents of air
directed through a novel separator and a collector for
the lighter particles that are separated from the material 15
registers with a material collecting box 46 having a nor»
mally closed door 48.
A plurality ofyertically spaced de?ectors 50, 52 and
54 are provided in the body 38, the lowermost de?ector
54 being frusto~conical and joined to the tube 16 at
by the action of combined cyclonic and straight air ?ow
through the said separator.
It is the primary object of the instant invention to
its apex, slanting downwardly and outwardly therefrom
but terminating at its periphery in spaced relationship
atmosphere.
surrounding the tube 16 in spaced relationship thereto
to the wall of the body portion 44.
provide a mineral separator employing a pair of spaced
The intermediate de?ector 52 is also frusto-conical and
primary passages for free vertical ?ow of air and a conical 20 carried in any suitable manner (not shown) by the'tube
passage therebetween for cyclonic air movements that
16. De?ector 52 is in the nature of an annulus sur
operate to draw lighter particles spirally. inward to the
rounding the tube 16 in spaced relationship thereto and
center of the separator from the primary passages, there
engaging the inner face of the wall of the body portion
by permitting gravitation of the heavier particles with
38 at the periphery of the uppermost major diameter of
in the latter as the light particles move upwardly in the
>
t
25 de?ector 52.
conical passage.
The uppermost de?ector 50 consists of a ?at horizontal
Another important object of the instant invention is
plate engaging and secured to the inner face of the wall
to provide a collector having a novel arrangement of de
of body portion 40 immediately beneath av radial air
?ectors for separating the air and the material so that
discharge pipe ‘56 communicating with body portion 40
the latter may be recovered and the air discharged to the
adjacent top 42. An opening 58 in the de?ector 50
In the drawing:
has a diameter that is less than the maximum diameter
FIG. 1 is a fragmentary, side elevational view of an
of the de?ector 54 and appreciably less than the mini
air-?ow material collector and separator made pursuant
mum diameter of the de?ector 52.
to my present invention, parts being broken away and 35 Any suitable means (not shown) may be used for
in section to reveal details of construction.
creating arti?cial-currents of air and directing the same
FIG. 2 is a transverse cross-sectional view taken on
line 2—2 of FIG. 1.
FIG. 3 is a fragmentary edge elevational view show
ing only the separator; and
FIGS. 4-7 inclusive are transverse cross-sectional views
540;
taken on lines 4--4, 5~—5, 6——6 and 7-_7 respectively of
FIG. 1.
The apparatus illustrated in the drawing for recover
ing certain desired particles from various types of mate 45
rials includes a collector 10 and a separator 12 inter
connected by a tube 16.
through the separator 12 and the collector 10 from the
air inlet opening at the lower end of body 14 to the air
discharge 56. For example, a blower driven by any suit
able prime mover may be operably coupled with the
pipe 56. On the other hand, if it is desired to connect
the blower directly through the top 42 of body 38 cen—
trally thereof, tube 16 may then be connected radially
with body portion 40 above the de?ector 50 and then
extend inwardly into body. 38 for vertical disposition
1 through the three de?ectors as illustrated.
t
In operation, material is fed into hopper 26 for flow
The separator 12 includes a hollow upright body 14
into the vertically rising stream of air in body 14 of
open at its lowermost end and communicating with the
separator 12. Particles of such material too heavy to be
tube 16. Body 14 has a pair of spaced ?at parallel side 50 carried upwardly within the body 14 by the air stream
Walls 18 and 20 interconnected by end walls 22 and 24, ‘ will fall immediately after entering the slot 24 and dis
it being noted that the distance between walls 18 and
charge from the body 14 through its'lowermost air inlet
20 and therefore the thickness of the body 14 is ap
end. The remaining particles will rise within the body
preciably less than .the Width of body 14 at its lower
14 and from such particles the lighter substances will
most rectangular open inlet end.
55 be drawn inwardly into the passage 36 by virtue of the
cyclonic movement of air in the passage 36. Heavier
However, body 14 progressively and uniformly de
particles will gravitate in the passages 32 and 34 within
creases in Width as tube 16 is approached from adjacent
the air that ?ows along a straight vertical path of travel
a materials receiving slot formed in the wall 18. A hop
along passages 32 and 34. The only materials, therefore,
per 26 is mounted on the body 14 to facilitate the feeding
of the material into the body 14 through the slot. Be 60 that will pass into the tube ‘16 are those light particles
neath slot end walls 22 and 24 are in parallelism.
Walls 18 and 20 are provided with semi-conical bulges
28 and 30, respectively, that are directly opposite one
another and extend from ‘their apex ends adjacent slot
24 upwardly throughout the remaining height of body
14 to a point of direct connection with the tube 16. The
combined radii of bulges 28 and 30 ‘at the upper ends
which are removed from the passages 32 and 34 by the
cyclonic air movement in the passage 36.
The air and the light particles entrained therein will
discharge downwardly into the collector 10 through the
65 lowermost open end of the tube 16. These particles will
. gravitate toward the box 46 as the air reverses its direction
of travel from the tube 16 upwardly toward the dis~.
charge 56. Any particles that tend to move upwardly with
the air in the collector 10* will be trappedjor de?ected
thereof are the same as the diameter of tube 16 with
which they communicate and directly connect. _
downwardly by the three de?ectors.
.
_ There is presented, there-fore, a pair of spaced passages 70
Thoseupwardly moving particles next adjacent the tube
32 and 34 between the walls 18 and 20 and a central, sub
16 below de?ector 54 cannot move upwardly with the air
3,042,208
3
4
because of the de?ector 54. By the same token, the par
tangular at the inlet, there being a pair of spaced portions
ticles which tend to move upwardly along the wall of
body portion 44 and those along the wall of body portion
40 will be trapped by the de?ector 52. Finally, the de
forming a part of said body for free vertical ?ow of said
air, and a central, substantially conical portion progres
sively decreasing in diameter as the inlet end thereof is
flector 50 may under certain circumstances be needed to
provide a ?nal means of separation of air and entrained
approached for cyclonic ?ow of said air, and communi
cating with said pair of spaced portions therebetween,
particles.
whereby lighter particles are drawn from said pair of
spaced portions into the central portion and carried to
said outlet, and heavier particles return by gravity within
said pair of spaced portions to the inlet when the ma
'
It is contemplated that means be provided in the box 46
and/or door 48 to normally cause the same to collect a
sufficient amount of material to seal the lowermost end
of the collector 1%. In this connection, any one of a num
ber of well-known spring loaded devices or the like may
terial is introduced into the air stream at said inlet.
5. Separating apparatus for comminuted material hav~
ing particles of different speci?c gravities comprising an
be employed, operable to automatically discharge the ma
upright body having an inlet, and an outlet spaced above
terials by action of the weight thereof after a predeter
mined amount has collected in the body 38.
15 the inlet, said body being hollow for flow of arti?cial cur
rents of air from the inlet to the outlet, the transverse,
Having thus described the invention what is claimed
cross-sectional contour of the body being substantially rec
as new and desired to be secured by Letters Patent is:
tangular at the inlet, with the thickness thereof appreciably
1, Separating apparatusfor comminuted material hav
less than the width thereof, there being a pair of spaced
ing particles of different speci?c gravities comprising an
upright body having an inlet, and an outlet spaced above 20 portions forming a part of said body for free vertical flow
of said air, and a central, substantially conical portion
the inlet, said body being hollow for ?ow of arti?cial
progressively decreasing in diameter as the inlet end there
of is approached for cyclonic ilow of said air, and com
currents of air from the inlet to the outlet, there being
a pair of spaced portions forming a part of said body for
free vertical flow of said air, and a central, substantially
municating with said pair of spaced portions therebetween,
conical portion, progressively decreasing in diameter as 25 whereby lighter particles are drawn from said pair of
spaced portions into the central portion and carried to
the inlet end of said conical portion is approached for
said outlet, and heavier particles return by gravity within
cyclonic ilow of said air, and communicating with said
said pair of spaced portions to the inlet when the material
pair of spaced portions therebetween, whereby lighter par
is introduced into the air stream at said inlet.
ticles are drawn from said pair of spaced portions into
6. Separating apparatus for comminuted material hav
the central portion and carried to said outlet, and 30
ing particles of different speci?c gravities comprising an
heavier particles return by gravity within said pair of
upright body having an inlet, and an outlet spaced above
spaced portions to the inlet when the material is introduced
the inlet, said body being hollow for ?ow of ‘arti?cial cur
into the air stream at said inlet.
rents of air from the inlet to the outlet, the transverse,
2. Separating apparatus for comminuted material hav
ing particles of different speci?c gravities comprising an 35 cross-sectional contour of the body being substantially rec
tangular at the inlet, with the thickness thereof appreciably
upright body having an inlet, ‘and an outlet spaced above
less than the width thereof, there being a pair of spaced
the inlet, said body being hollow for ?ow of arti?cial
portions forming a part of said body for free vertical flow
currents of air from the inlet to the outlet, there being
of said air, said pair of spaced portions being of uniform
a pair of spaced portions forming a part of said body for
free vertical flow of said air, and a pair of directly 0p 40 thickness throughout the height of the body, and a central,
substantially conical portion, progressively decreasing in
posed, spaced, semi-conical bulges, forming a central,
substantial-1y conical portion, progressively decreasing in
diameter as said inlet is approached for cyclonic flow of
said air, and communicating with said pair of spaced
diameter as the inlet end of said conical portion is ap—
portions therebetween, whereby lighter particles are drawn
proached for cyclonic ?ow of said air, and communicating
with said pair of spaced portions therebetween, whereby 45 from said pair of spaced portions into the central por
tion and carried to said outlet, and heavier particles re~
lighter particles are drawn from said pair of spaced por
turn by gravity within said pair of spaced portions to
tions into the central portion and carried to said outlet,
the inlet when the matenial is introduced into the air
and heavier particles return by gravity within said pair
of spaced portions to the inlet when the material is in
troduced into the air stream at said inlet.
3. Separating apparatus for comminuted material hav
ing particles of different speci?c gravities comprising an
upright body having an inlet, and an outlet spaced above
the inlet, said body being hollow for ?ow of arti?cial
stream at said inlet.
50
7. Separating apparatus for comminuted material hav
ing particles of different speci?c gravities comprising an
upright body having an inlet, and an outlet spaced above
the inlet, said body being hollow for ?ow of arti?cial
currents of air from the inlet to the outlet, the transverse,
currents of air from the inlet to the outlet, there being 55 cross-sectional contour of the body being substantially
rectangular at the inlet, with the thickness thereof appreci‘
a pair of spaced portions forming a part of said body for
ably less than the width thereof, said body progressively
free vertical ?ow \of'said air, and a pair of directly op
increasing in width as the inlet is approached, there being
posed, spaced, semi-conical bulges, forming a central,
a pair of spaced portions forming a part of said body
substantially conical portion for cyclonic ?ow of said air,
said conical bulges being disposed on opposite sides of 60 for free vertical ?ow of said air, and a central, substan
tially conical portion, progressively decreasing in diameter
a central vertical plane through the body, said central
as said inlet is approached for cyclonic flow of said air,
portion progressively decreasing in diameter as the inlet
end thereof is approached and communicating with said
pair of spaced portions therebetween, whereby lighter
particles ‘are drawn from said pair of spaced portions into
the central portion and carried to said outlet, and heavier
particles return by gravity within said pair of spaced por
tions to the inlet when the material is introduced into the
and communicating with said pair of spaced portions there
between, whereby lighter particles are drawn from said
pair of spaced portions into the central portion and carried
to said outlet, and heavier particles return by gravity with
in said pair of spaced portions to the inlet when the ma
terial is introduced into the air stream at said inlet.
8. Separating apparatus for comminuted material hav
4. Separating apparatus for comminuted material hav 70 ing particles of different speci?c gravities comprising an
upright body having an inlet, and an outlet spaced above
ing particles of different speci?c gravities comprising an
the inlet, said body being hollow for flow of arti?cial
upright body having an inlet, and any outlet spaced above
currents of air from the inlet to the outlet, the transverse,
the inlet, said body being hollow for flow of arti?cial
cross-sectional contour of the body being substantially
currents of air from the inlet to the outlet, the transverse
cross-sectional contour of the body being substantially rec 75 rectangular at the inlet, with the thickness thereof appreci
air stream at said inlet.
5
3,042,203
ably less than the width thereof, said body progressively
increasing in Width as the inlet is approached, there being
6
and heavier particles return by gravity within said pair
of spaced portions to the inlet when the material is in
a pair of spaced portions forming a part of said body
troduced into the air stream at said inlet.
for free vertical ?ow of said air, said pair of spaced por
References Cited in the ?le of this patent
tions being of uniform thickness throughout the height 6
of the body, ‘and a central, substantially conical portion,
UNITED STATES PATENTS
progressively decreasing in diameter as said inlet is ap- .
preached for cyclonic ?ow of said air, and communicat
ing with said pair of spaced portions therebetween, where
by lighter particles are drawn from said pair of spaced 10
portions into the central portion ‘and carried to said outlet,
891,688
969,157
1,871,546
2,641,335
Gray _______________ __
Day ________________ __
McClafferty __________ __
Berg _______________ __
June 23, 1908
Sept. 6, 1910
2,808,151
Clnte ________________ __ Oct. 1, 1957
Aug. 16, 19132
June 9, 1953
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