US2177809A - Apparatus for magnetically separating materials - Google Patents
Apparatus for magnetically separating materials Download PDFInfo
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- US2177809A US2177809A US140930A US14093037A US2177809A US 2177809 A US2177809 A US 2177809A US 140930 A US140930 A US 140930A US 14093037 A US14093037 A US 14093037A US 2177809 A US2177809 A US 2177809A
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- magnetic
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- 239000000463 material Substances 0.000 title description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 239000002245 particle Substances 0.000 description 11
- 239000006249 magnetic particle Substances 0.000 description 10
- 239000000377 silicon dioxide Substances 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 9
- 230000004907 flux Effects 0.000 description 8
- 229910052595 hematite Inorganic materials 0.000 description 7
- 239000011019 hematite Substances 0.000 description 7
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 238000007885 magnetic separation Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- SLZWEMYSYKOWCG-UHFFFAOYSA-N Etacelasil Chemical compound COCCO[Si](CCCl)(OCCOC)OCCOC SLZWEMYSYKOWCG-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229960005191 ferric oxide Drugs 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- QVRVXSZKCXFBTE-UHFFFAOYSA-N n-[4-(6,7-dimethoxy-3,4-dihydro-1h-isoquinolin-2-yl)butyl]-2-(2-fluoroethoxy)-5-methylbenzamide Chemical compound C1C=2C=C(OC)C(OC)=CC=2CCN1CCCCNC(=O)C1=CC(C)=CC=C1OCCF QVRVXSZKCXFBTE-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/14—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with non-movable magnets
Definitions
- Fig.v 1 is a top plan view of the device of the present invention
- Fig. 2 is a side view in section of the same
- Fig. 3 is an enlarged view illustrating one feature of thek 25 same
- Fig-4 is an enlarged view illustrating another feature of the same
- the kdevice of the present invention consists ina novel type of elec- 35 tromagnet together with means to feed the material to be treated to the magnet and means to segregate the magnetically attracted particles f from thenon-magnetic particles.
- 'I'he electromagnet' of the present invention 4 consists essentially of a pole piece I (Fig.
- Shield 2 is comprisedIoi j 'non-magnetic material such as a stainless aus- 50 tenitlc Fe.Cr.Ni alloy..
- a cylindrical end piece l '4 (Fig.5) con'lprisedk of magnetic material is ro- ⁇ tatablysupportedwithin said recess 3, the pex ripheral cylindricalsuriace o! which end piece is provided with a pluralityv of spaced and isolated points orareas 5 comprised of material of relatively high magnetic iiux permeability as compared to the intermediate areas' 0 thereof, the said spaced and isolated points or areas i forming a substantially discontinuous path circumferentiially about the peripheral surface oi' thesaid end i5 p ece.
- pole l may be varied markedly without departure from the present invention as will be apparent from turther description.
- I have i'ound that by disposing two of these poles horizontally with the rounded non-magnetic ends in space gap relation as indicated in Figs. 2 and 8. and by passing a magnetizing current across this space gap, I may feed material l5 i0 gravitationally onto the curvedI non-magnetic surface or eitheror both pole ends, and by rotating the cylindrical end pieces 4, I can eiiectively cause the magnetically attracted particles of the material lli to be progressively moved downwardly along the curved surface through the zone of maximum vflux density and thence through a decreasing magnetic field along the under side oi.' the curved surface to the point where the ux density can no longer retain the 25 particle adjacent the non-magnetic surface against the vertically downward gravitational pull.
- Thev non-magnetic particles of the material fall vertically oil' the lip of the curved surface and by the provision of adjustableI gatemeans Il I/.may accordingly obtain a relatively clean separation'between the magnetic' and nonmagnetic particles.
- the essential problem involved is to economically provide a' magnetic field of. adequate 35 strength to magnetically attract and hold the desired particle to the non-magnetic surface against the gravitational pull and other interfering forcesincident to the gravitational passage v of the material through the magnetic field.
- the feeding of material to be treated through the space gap and gravitationally along the curved non-magnetic surface of the pole end may be accomplished in a plurality of ways without departure from the present invention.
- Figs. 2 and 8 I have shown one convenient way of doing this.
- the essential feature of the feeding means is to deposit the material upon the upper curved surface in a relatively thin layer, not over 2 or 3 particles deep, so that entrapment of non-magnetic particles by the magnetic particles is substantially avoided.
- the material I0 is fed through spout I4 into chamber I5 provided with a deflection plate I6 which carries the material gravitationally to the opposite side walls of container I5 and to a slit opening I1 adapted to permit the material I0 to trickle therethrough upon inclined plate I8 forming a tangential continuation of the curved outer surface of shield 2 at y justing gate means II.
- the magnetic field strength should be sufficient to retain the magnetic value desired to be separated adjacent the outer curved surface of shield 2. This field strength will vary with respect to the particular magnetic susceptibility of the magnetic values.l
- Rotation of cylindrical end piece 4 in the direction of material flow may be at various rates depending upon the rate of flow of materia.1 I0, the relative amount of magnetic and non-magnetic particles therein, the magnetic susceptibility and field strength, for example. I have found that the rate of travel of the peripheral surface of the'pole end should closely approximate the rate of flow of the material I0 for best results on the majority of materials and over a relatively wide range of concentrations of magnetic and non-magnetic constituents.
- the non-magnetic particles of material I0 will be collected in center compartment A and the magnetic particles collected in outer compartments B-B' (Fig. 2) or'in compartments A and B respectively (Fig. 8), the division being made possible and positive through operation of adjustable gate means II.
- Fig. 4 I have illustrated a very convenient arrangement for ad- The gates II are mounted on rotatable shafts I9-I9 the ends of which y protrude through the end walls of container I5 maximum field strength will be located.
- the cylindrical end section 4 is comprised substantially of a tubular length 4 of low metalloidsteel having a total length substantially less than the overall length of pole I but approximately that of curved end piece 2 (Fig. 6).
- the outer peripheral surface of tube Il is provided with a plurality of spaced grooves extending longitudinally the entire length of the tube.
- each groove I dispose and s eat strips 5 comprised of material of relatively high flux permeability, such as cobalt steel, which strips 5 extend above the peripheral surface of tube 4 with the intervening spaces between the extending sides 4of strips 5 lled with material 25 of' low magnetic flux permeability, such as lead solder having a permeability substantially that of air.
- the combination of tube 4 with areas 5 and 25 I will hereinafter identify as a rotor 4.
- strips 5 with a longitudinal groove or recess 24 (as indicated in cross-section in Fig. 4) and as a specific embodiment of this structure strips 5 are comprised of cobaltsteel having a cross-sectional dimension of 1%; inch .by one inch and a length approximating the length of the tube 4. These strips are recessed edgewise into the surface of tube 4 about V2 inch and the space 25 between the strips is filled with lead solder to a level approximating that of the upper surface of the strips 5.
- strip 5 is provided with a centrally located recess 24 aproximately 1/8 inch wide by 1/8 inch deep.
- This arrangement provides a flux density ratio between the cobalt strip and the intervening solder of about 8:1; for example, With an exciting current of two amperes a flux density of about 13,000 gausses will be obtained on the cobalt strips while only about 1680 gausses will be obtained on the lead solder.
- This provides an ample flux differential between the strip 5 and intervening material 25 to obtain the desired movement of the magnetically attracted particles through the magnetic eld.
- the longitudinal groove or recess 24 in strip 5 accentuates the effect desired from this flux differential in some manner not at this moment apparent. It may be that by multiplying the number of sharp corners present on strip 5 by the provision of recess 24 this accentuated effect is obtained.
- a driving Vable means such as a variable speed back drive electric motor through suitable gearing 33.
- this rotor structure I may economically extend the length of cylindrical end section 4 to thirty inches or more without proportionately increasing the diameter thereof, and
- I may treat a ferruginous sandstone ore consisting principally of hematite and silica found principally in the Alabamairon ore district as follows:
- the ore after grinding averages about 25.0% Fe (as FezOa) and the bulk of the relmainder is silica.
- the maximum fiux density permissible with# I then increase-the flux density a out alsol attracting the silica particularly those grains containing some iron or having some hematite still adhering to the K.surface of the grain.
- Apparatus for the magnetic separation of dry materials comprising in combination an inclined chute member tangent to a rearwardly extendingA arcuate portion, the degree of inclination of the chute being suiiicient to gravitationally feed the material to be treated in a relatively thin layer not over 3 particles .deep along vsaid chute .towards said arcuate portion, means to magnetically attract the magnetic particles of said material to the surface of said chute as the material approaches the said arcuate por.
Description
Oct. 3l, 1939. A'L QUENEAU 2,177,809
APPARATUS FOR MAGNETIALLY SEPARHTING `MATERIALS Filed May 5, 1937 3 Sheets-Sheet 1 m l i @Q Il e L] E i I I D l 1 O I i lq i i I I I." u is f 1 R w s lm L l I- "-3 l El N INVENTOR, UGUJ77%LEQNC=AAL%VEAU. ATTORNEYS Oct. 3l, 1939. A, L, 1 QUENEAU 2,177,809
APPARATUS FOR MAGNETICALLY SEPARATING MATERIALS Filed May 5, 1957 3 sheets-sheet 3 v INVENTOR.
Aucasr//vlfa/vw/y QuE/V540. 22a ATTORNEYS Nm wm M A A A mi Patented Oct. 31, 129379 'PATENT omer.
APPARATUS FOB MAGNETICALLY SEPARATING MATERIALS Augustin Leon Jean Queneau, Bernardsville, N. J. Application May 45, 1.937, Serial No. 140,930
z claim.. (orcos-219) This invention relates to magnetic separator devices and more` particularly to devices adapted to economically segregate by magnetic means'v l5 jects and advantages will be apparent as the invention is more fully disclosed. v In accordance with the above objects I have devised an electromagnetic separator device of which the following description together with the 20 'accompanying' drawings is a full and complete disclosure. In the drawings, Fig.v 1 is a top plan view of the device of the present invention; Fig. 2 is a side view in section of the same; Fig. 3 is an enlarged view illustrating one feature of thek 25 same; Fig-4 is an enlarged view illustrating another feature of the same; Fig. 5'is an enlarged section illustrating still another feature of the same; Fig. 6 is a perspective view of one' im Referring to these drawings, the kdevice of the present invention consists ina novel type of elec- 35 tromagnet together with means to feed the material to be treated to the magnet and means to segregate the magnetically attracted particles f from thenon-magnetic particles. 'I'he electromagnet' of the present invention 4 consists essentially of a pole piece I (Fig. 6) rectangular in section, one end 2 of the polev piece .being arcuately recessed between opposite rectangular sides oredges, and being provided with v`"an arcuately shaped non-magnetic shield 24 formf ing with said recess a cylindrical bore passage- .way 3 the cylindrical axis of which lies substantially coincidentally with the axis of. the rounded surface of shield 2. Shield 2 is comprisedIoi j 'non-magnetic material such as a stainless aus- 50 tenitlc Fe.Cr.Ni alloy.. A cylindrical end piece l '4 (Fig.5) con'lprisedk of magnetic material is ro-` tatablysupportedwithin said recess 3, the pex ripheral cylindricalsuriace o! which end piece is provided with a pluralityv of spaced and isolated points orareas 5 comprised of material of relatively high magnetic iiux permeability as compared to the intermediate areas' 0 thereof, the said spaced and isolated points or areas i forming a substantially discontinuous path circumferentiially about the peripheral surface oi' thesaid end i5 p ece.
The rectangular size of pole l may be varied markedly without departure from the present invention as will be apparent from turther description. l0
Ihave i'ound that by disposing two of these poles horizontally with the rounded non-magnetic ends in space gap relation as indicated in Figs. 2 and 8. and by passing a magnetizing current across this space gap, I may feed material l5 i0 gravitationally onto the curvedI non-magnetic surface or eitheror both pole ends, and by rotating the cylindrical end pieces 4, I can eiiectively cause the magnetically attracted particles of the material lli to be progressively moved downwardly along the curved surface through the zone of maximum vflux density and thence through a decreasing magnetic field along the under side oi.' the curved surface to the point where the ux density can no longer retain the 25 particle adjacent the non-magnetic surface against the vertically downward gravitational pull. Thev non-magnetic particles of the material fall vertically oil' the lip of the curved surface and by the provision of adjustableI gatemeans Il I/.may accordingly obtain a relatively clean separation'between the magnetic' and nonmagnetic particles.
The essential problem involved is to economically provide a' magnetic field of. adequate 35 strength to magnetically attract and hold the desired particle to the non-magnetic surface against the gravitational pull and other interfering forcesincident to the gravitational passage v of the material through the magnetic field. 40
- This problem is essentially one ci magnet design and the most effective and eilicient design that Ihave found is that indicated in the draw- -l ings. The electromagnetic coil l2 is wound about the pole las close tothe rounded end as is pracyspaced poles I dispose rectangular yoke member I3 forming" a substantially closed magnetic path horizontally on either side of the space gap between the non-magnetic pole ends. Coils IZ-II' 55 ployed in accordance with the present invention,
as indicated in Figs. 2 and 8.
The feeding of material to be treated through the space gap and gravitationally along the curved non-magnetic surface of the pole end may be accomplished in a plurality of ways without departure from the present invention. In Figs. 2 and 8 I have shown one convenient way of doing this. The essential feature of the feeding means is to deposit the material upon the upper curved surface in a relatively thin layer, not over 2 or 3 particles deep, so that entrapment of non-magnetic particles by the magnetic particles is substantially avoided. In the arrangement shown, the material I0 is fed through spout I4 into chamber I5 provided with a deflection plate I6 which carries the material gravitationally to the opposite side walls of container I5 and to a slit opening I1 adapted to permit the material I0 to trickle therethrough upon inclined plate I8 forming a tangential continuation of the curved outer surface of shield 2 at y justing gate means II.
such an angle as will with respect to the particle size and specific gravity of material I0 promote a gravitational oW of the material I0 at a desired rate downwardly along the said 'non-magnetic curved surface of shield 2.
The magnetic field strength should be sufficient to retain the magnetic value desired to be separated adjacent the outer curved surface of shield 2. This field strength will vary with respect to the particular magnetic susceptibility of the magnetic values.l
Rotation of cylindrical end piece 4 in the direction of material flow may be at various rates depending upon the rate of flow of materia.1 I0, the relative amount of magnetic and non-magnetic particles therein, the magnetic susceptibility and field strength, for example. I have found that the rate of travel of the peripheral surface of the'pole end should closely approximate the rate of flow of the material I0 for best results on the majority of materials and over a relatively wide range of concentrations of magnetic and non-magnetic constituents.
In the ordinary practice of the present invention, the non-magnetic particles of material I0 will be collected in center compartment A and the magnetic particles collected in outer compartments B-B' (Fig. 2) or'in compartments A and B respectively (Fig. 8), the division being made possible and positive through operation of adjustable gate means II. In Fig. 4 I have illustrated a very convenient arrangement for ad- The gates II are mounted on rotatable shafts I9-I9 the ends of which y protrude through the end walls of container I5 maximum field strength will be located.
In the use and application of the present invention, it is' apparent that the economic treatment of some materials, such as low grade or low cost material, will require a single device to handle relatively large tonnages of materials during a unit time interval. This may be accomplished through lengthening the rectangular section of the pole piece, thereby producing a relatively long rectangular gap through which the material III may be passed, substantially as indicated in Fig. 1. As the length of cylindrical end section 4 is increased, however, lthe difculties of rotatively supporting the same within the bore passageway increases, and to avoid the use of relatively heavy axles and to reduce the energy required to rotate the end piece, I have designed the structure indicated in Fig. 5.
In Fig. 5 the cylindrical end section 4 is comprised substantially of a tubular length 4 of low metalloidsteel having a total length substantially less than the overall length of pole I but approximately that of curved end piece 2 (Fig. 6). The outer peripheral surface of tube Il is provided with a plurality of spaced grooves extending longitudinally the entire length of the tube. In each groove I dispose and s eat strips 5 comprised of material of relatively high flux permeability, such as cobalt steel, which strips 5 extend above the peripheral surface of tube 4 with the intervening spaces between the extending sides 4of strips 5 lled with material 25 of' low magnetic flux permeability, such as lead solder having a permeability substantially that of air. The combination of tube 4 with areas 5 and 25 I will hereinafter identify as a rotor 4.
I prefer to provide strips 5 with a longitudinal groove or recess 24 (as indicated in cross-section in Fig. 4) and as a specific embodiment of this structure strips 5 are comprised of cobaltsteel having a cross-sectional dimension of 1%; inch .by one inch and a length approximating the length of the tube 4. These strips are recessed edgewise into the surface of tube 4 about V2 inch and the space 25 between the strips is filled with lead solder to a level approximating that of the upper surface of the strips 5. The
upper surface of strip 5 is provided with a centrally located recess 24 aproximately 1/8 inch wide by 1/8 inch deep. This arrangement `provides a flux density ratio between the cobalt strip and the intervening solder of about 8:1; for example, With an exciting current of two amperes a flux density of about 13,000 gausses will be obtained on the cobalt strips while only about 1680 gausses will be obtained on the lead solder. This provides an ample flux differential between the strip 5 and intervening material 25 to obtain the desired movement of the magnetically attracted particles through the magnetic eld. The longitudinal groove or recess 24 in strip 5 accentuates the effect desired from this flux differential in some manner not at this moment apparent. It may be that by multiplying the number of sharp corners present on strip 5 by the provision of recess 24 this accentuated effect is obtained.
To the inside of this rotor I afx a driving Vable means such as a variable speed back drive electric motor through suitable gearing 33.
By the use of this rotor structure Imay economically extend the length of cylindrical end section 4 to thirty inches or more without proportionately increasing the diameter thereof, and
thereby markedly increasing the capacity per time l unit of the device of the present invention without seriously increasing the cost of the device. It is necessary, however, to increase the coil turns of coils |2--2' to provide for the increased magnetic currents thereby required. One skilled in the art may readily calculate the number of coil turns required to obtain a desired magnetic current when given any particular pole area from which to figure.
As an example of the practical utility of the present invention, I may treat a ferruginous sandstone ore consisting principally of hematite and silica found principally in the Alabamairon ore district as follows:
'The ore is crushed and ground carefully to .free the hematite from the silica. In this type ore the individual grains of silica are coated or cemented together by the hematite. It is exceedingly diicult to crush the ore in such a way as to avoid breaking the silica grains and to entirely free the surfaces of the silica grains from adhering crusts of hematite. 'I'he magnetic suscep tibilities of these two materials are not far apart: hematite=1.32 and silica=.37 (iron as a standard being taken at 100). Therefore it is apparent the successful application of any method of magnetic separation will depend primarily upon the efficiency of the grinding process and the extent the individual silica grains are freed from the surface coating of hematite. The most, effective mode of grinding that I have found to accomplish this,
is to first crush the ore to about 1/ inch size in an ordinary rock crusher, then to place the material in a rod mill and to grind slowly therein for a prolonged time interval. The thus ground material should then be screened through 20' mesh, the oversize particles returned to the rod mill and the material passing the screen subjected to magnetic separation in the device of the l present invention.
In treating the thus ground ore in the device of the present invention, I have found it preferable to recover the iron content of the ore in steps. The ore after grinding averages about 25.0% Fe (as FezOa) and the bulk of the relmainder is silica.
During the first passage lof the ore through the device I apply a relatively low iiux density in order to remove substantially all of the iron present as magnetite (Fe'sOi) the more magnetic ironoxide. to about I13,000 gauss and then to about 19,000 gauss, the maximum fiux density permissible with# I then increase-the flux density a out alsol attracting the silica particularly those grains containing some iron or having some hematite still adhering to the K.surface of the grain. By this mode of procedure I find I may recover substantially of the total iron of the ore and obtain thereby a concentrate averaging 52% Fe and the balance mainly silica which concentrate is readily adapted for use after sintering in the usual types of iron ore reduction furnaces and processes. As the iron ore itself is relatively of little value .unless and until concentrated and must'after concentration be able to compete from a cost standpoint with relatively Alow priced high grade ores, it is apparent that the device of the present invention is adapted to accomplish this very result. A relatively large tonnage per day may be treated with low labor costs as one man can supervise the operation of a large battery of such devices.
Having broadly and specifically described the present invention and several modifications of the same, it is apparent that the invention may be widely modified without departure therefrom and all such modifications are contemplated as may fall within the scope of the following claims.
What I claim is: y 1. Apparatus for the magnetic separation of dry materials, comprising in combination an inclined chute member tangent to a rearwardly extendingA arcuate portion, the degree of inclination of the chute being suiiicient to gravitationally feed the material to be treated in a relatively thin layer not over 3 particles .deep along vsaid chute .towards said arcuate portion, means to magnetically attract the magnetic particles of said material to the surface of said chute as the material approaches the said arcuate por. tion, means to'magnetically -move the attracted particles along the surface of vsaid chute and over the lip of said arcuate portion to a point on the underside of said arcuate portion adapted to provide a path of substantially free vertical fall for the said magnetic particles remote from the path of fall of the non-magnetic particles off the lip of said arcuate portion.
2. The apparatus of claim 1 wherein two said chutes are provided and are disposed opposite each other in a position to feed the said materials towards each other with the said arcuate portions located adjacent but in spaced relation and with a space gap therebetween, means to project an electromagnetic field of required intensity between said arcuate portions, said means includ- `ing electromagnetic poles provided with rotatable cylindricalshaped pole ends, having a diameter and length adapting the same to be located adjacent the under surface of' the said arcuate portion, the peripheral surfaces of said pole ends being provided with spaced and isof lated points or areas comprised of material of relatively high flux concentration as compared to the intervening areas, said spaced areas being discontinuous in the direction of rotation of said pole end surfaces. l
AUGUSTIN LEON JEAN QUmiEAU.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US140930A US2177809A (en) | 1937-05-05 | 1937-05-05 | Apparatus for magnetically separating materials |
Applications Claiming Priority (1)
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US140930A US2177809A (en) | 1937-05-05 | 1937-05-05 | Apparatus for magnetically separating materials |
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US2177809A true US2177809A (en) | 1939-10-31 |
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US140930A Expired - Lifetime US2177809A (en) | 1937-05-05 | 1937-05-05 | Apparatus for magnetically separating materials |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1006362B (en) * | 1953-03-25 | 1957-04-18 | Ton Und Steinzeugwerke Ag Deut | Method and device for the electromagnetic de-ironing of fine-grained to dust-fine material, in particular ceramic masses, in free fall |
DE971949C (en) * | 1952-02-28 | 1959-04-23 | Heinrich Dipl-Ing Spodig | Magnetic roller separator |
US3392432A (en) * | 1963-12-18 | 1968-07-16 | Azoplate Corp | Magnetic roller for electro-photographic development |
US3948766A (en) * | 1972-06-27 | 1976-04-06 | Heinrich Spodig | Magnetic separator |
WO1979000060A1 (en) * | 1977-07-25 | 1979-02-22 | Spodig Heinrich | Magnetic separator comprising two rotating magnetic drums with polarity reversal |
US4172819A (en) * | 1978-05-26 | 1979-10-30 | Carpco, Inc. | High intensity magnetic separator rotor |
US4196639A (en) * | 1977-03-23 | 1980-04-08 | Heinrich Spodig | Friction gear permanent magnetic entrainment means |
-
1937
- 1937-05-05 US US140930A patent/US2177809A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE971949C (en) * | 1952-02-28 | 1959-04-23 | Heinrich Dipl-Ing Spodig | Magnetic roller separator |
DE1006362B (en) * | 1953-03-25 | 1957-04-18 | Ton Und Steinzeugwerke Ag Deut | Method and device for the electromagnetic de-ironing of fine-grained to dust-fine material, in particular ceramic masses, in free fall |
US3392432A (en) * | 1963-12-18 | 1968-07-16 | Azoplate Corp | Magnetic roller for electro-photographic development |
US3948766A (en) * | 1972-06-27 | 1976-04-06 | Heinrich Spodig | Magnetic separator |
US4196639A (en) * | 1977-03-23 | 1980-04-08 | Heinrich Spodig | Friction gear permanent magnetic entrainment means |
WO1979000060A1 (en) * | 1977-07-25 | 1979-02-22 | Spodig Heinrich | Magnetic separator comprising two rotating magnetic drums with polarity reversal |
US4296865A (en) * | 1977-07-25 | 1981-10-27 | Heinrich Spodig | Magnetic separator having two rotating magnetic drums of opposite polarity |
US4172819A (en) * | 1978-05-26 | 1979-10-30 | Carpco, Inc. | High intensity magnetic separator rotor |
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