US834175A - Magnetic ore separator and classifier. - Google Patents

Description

MAGNETIC ORE APPLICATION FILED H0118. 1905.

57 ,H 0 pmhn/ m 34; FY Qu /A I G. H. WARING.

MAGNETIC ORE SEPARATOR AND GLASSIFIEELI APPLICATION rILnn 16v. 16. 1905.

3 SHEETS-SHEET 2.

PATENTED OCT. 23, 1906;

PATENTED OCT. 2s, 1 906.

G. H. WARING. I MAGNETIC ORE SEPARATOR AND GLASSIFIER.

APPLICATION FILED NOV. 16. 1905.

3 SHEETS*SHEET 3.

ticlesof ore to a "netic influence as the ho oblique pairs so that the 'ated in strength, the

5 UNI smg ns PATENT I OFFICE.

' GUY HI-wA-Rme, or WEBB CITY, MISSOURI;

To all whom it mag concern.-

Be itknown that I, GUY H. WARING, a citizen of the UnitedStates, and a resident of Webb City, Jasper county, Missouri, have invented certain new and useful Improvements in Magnetic Ore Separators and Classifiers, of which the following is a specification containing a full, clear, and exact descrip- 'tion, reference being had to the accompanying drawings, forming a part hereof.

My object is to produce an improved magnetic ore separator and classifier which shall Specification of Letters Patent.

not only separate the ore from thefrefuse, butof inclination of the" said trough; means for shaking the trough, 'so as to cause the ore to pper; means for adjusting the degree:

slide, roll, and tumble freely down the in-" cline; magnets arranged above the trough in lanes of magnetic influence overlap longitu mally of the direction of the flow of the stream of ore through said trough, as required to subject the par:

plractically constant mag- 1;

said troughgs means adjusting therelative position .ofthe mag nets and the ore; means for reciprocating a ey roll and tumble along .for regulating the dis tance between the magnets and the ore by series of magnets or their sources of magnetic influence crosswise of said lamps in circuit wlth said the magnets, as

trough; a series of magnets to take ,u -the-self-i1 1duction and lessen thespark and also to quicken the release action ofthe magnets; meansfor intermittently exciting" required to pick up the me and pass itover the edge of the sald troughand then drop it, said top and the strongest at the bottom, as reuired to pick up the high-grade ore firstand t e low-grade ore last, and independent re- .ceptaclesfor each grade 'of ore.

magnets being gradu-j weakest being-at the It has hithertobeen found impracticableto use reciprocating. electromagnets of high MAGNETIQ ORE SEPABATOR AND CLASSIFI'ER.

l Patented Oct. 23,1906.

A nmim; m le -maria, 1905. Serial No- 287.784-

power with bare oles intermittently excited when placed in c ose sets-that is, when the magnets momentarily cutout are'in juxtaposition with others excited:-whether the that are momentarily relation of the mag nets to each other are staggered or in square sets without the introduction of insulating material in the most intensely active portion.

of the field in order to so weaken the total attractive force of the magnet that itmay release the attracted material when cut out; but I have discovered that'whe'n the alternately-excited magnets are arranged in single pairs". placed obliquely with regard to each other the induced magnetism in the shunted or cut-out magnet when it is cutout isso small in amount that the magnets can be operated with bare poles acting u on the material under any desired potentia in an intermitting manner and at the same time quickly release the magnetic matetial when out out. This arrangement, as I find, makes it possible, as I believe, for the first time in the practical use of intermittent electromagnets to dispense altogether with every form of shield or pieces and the attractedmaterial. The

insulation between the polemore intensathe magnetic field is the farther apart the magnets should beplaced in the diagonal. Heretofore-theprincipal difficulty encountered inoperating intermittentlycha'rged magnets withv bare poles or bare pole-pieces has been-attributed chiefly-toresidual ma netism remaining after the current 1s cut 0 rial.

' My investigations have shown that with proper magnetic metal the residual magnetism causes'no trouble whatever, provided the induced currents are reduced to a negligible uantity, which I- find can be done-by other the 0 way.

. decided utility in the arrangement of in termittently-acting electromagnets in oblique lique arrangement and in no pairs as applied to the extraction of magnetic particles from a descending stream of material in which all the particleshave a-ireemo- 'tion of their own,- due to the combined effect and impact, arises from the'fact of gravity that the magnets mustnecessarily move at a right angle to the lines of direction of the moving stream, so that as the upper ma net of each pair recedes from any suc'hline t hemaand causing retention-of matete a in iinmedi tsl'y'above the p01 tion already-acted upon by the receding magnet before its return and remagnetization,

.but will be exactly in field of the lower 5 magnet. Similarly, during the'return strokeof the upper magnet the 1 material which would otherwise pass down behind the recedfrom movement en masse, as when c arr-ied by I a belt or pan, and without the intervention of bolts or insulation of an. description between '2 5 the. material and the ,po es of the electromag net ,---with meansforinterrupting the excitation of the magnets when-not over or in front of v the moving material andmeans for obtaining reciprocal lateral movement ,of the ore-can o rier or the magnets. I a I The attractive power of'a magnetic surface decreases in proportion to-the., square of the distance between it and the' material acted I -u on, and it is readily seen why any evice 35 w 'ch will. render theactualcontact of the poles and magnetic material-practicable in a magnetic se arator must .also vs greatly I --diminish sue .wa ste of'energy. T e operation of'separatin theme from the refuse is.

I greatlyfacilitate by shaking the trough.

I The following drawings illustrate one way of carrying out my ihvention.

. Figure 1 is a rearelevation of Fig. 2 is a to plan view omitting the hopper.

a si e'elevation, the receptacle for recs1. the ore being shown in section.

4 is a diagranmiatic view of theelectriiciruits. Fig; 5 is a detail of one of the hoppers and the inclined trough leadin from the ho per and showingthe means 0 adjusting t e mclination of the trough. Fig. 6 is a-to'p plan of the parts showxiin Fig.5. I v Referring to the drawings in detail, the hop- "per 10 has an outlet 11, and the assage of {5- .orethr'ou 'h the outlet is regulated. y the adjustable s 'de 12. Z-bars, 13 are attached tothe front face of the front wall of the hopperin vertical parallel positions, one on each S] de I of the outlet 11, as required to provide ways 6c in which the'slide 12- operates to open and close the outlet '11. i

fo'rmedjin the center of the slide 12, and a thumb-screw1-5 operates insaid slot as re-' quired to tighten andhold, the slide in any de- 6 5 sired position. The hopper 10.; is rigidly al; attention is called to the arrange the apparatus...

Eig.

A vertical slot 14is mounted upon the inclined bottom 16, and the upper surface of the bottom is covered by asmooth plate 17, of suitable. non-magnetic material, such as zinc. The bottom 16 is provided with adjustable sides 18,'said sides being strips of non-magnetic'material, such as zinc, and havin vertical slots 19, through which the thum -screws '20 o erate, as re- 'quired to adjust the height of t e sides above the bottom, thus roducing an inclined trough down which't I e ore will readily slide, roll, or. tumblefrom the outlet 11 in the ho per. I the apparatus shown there are three clined troughs leadin \from the hoppers. The hoppers are bui t-to'gether, and the trou hs' are rigidlyconne'cted to the hoppers. Theli upper ends 0 the troughs by the hin es 22,

rod 23 by the clamps 24. A rod 25 is mounted parallel with the rod 23 the corresponding en s ofsaid rods 23 and 25 being connected by the cross-rods 26.

Plates 27 are secured to the lower face of the troughs, and adjusting screws 28 are screw-seated vertically through the rod 28, withtheir upper ends 0 crating in recesses in the platesj27, so that he inclination of the I troughs may be regulated. by the adjusting- .screws 28.

The frame consists of the sills 29; the posts 30, extending upwardly from the sills; the side top pieces 3]., connecting the upper ends of the posts 30; the intermediate si e front-top piece 33, connecting the forward vends of theside top plieces 31; the rear top piece 34, connecting t e rear ends of the side top pieces 31; thecenter. timber 35; a corres onding fronttimber mounted in horizontal ainement vertically below the front, to

alinement with the center timber 35,

Shafts 37 are mounted in bearin s upon the timbers 35 and 36. and groove wheels 38 mounted upon theshafts, and the rods 23 and 25 rest upon these grooved wheels, as reuiredto. support the hop ers and the inc ined troughs. Adriving-s aft 39 is mounted in bearings .upon the center timber 25 and the corresppndmg front timber, and a pitmany-rod 40 connects the cross-bar 26, to the crank-disk 41, carried by the driving-shaft .the top pleces 31 near their rear ends, and magnet-supports 44 are pivotallyconnected hoppers 10, arranged in a row, and three in-.

and the support 21is' in turn connected to the ack sup ort 21is connected to the rear pieces 32 ;-connecting the centers of the posts 30; the

piece 33, and a 'reartimber 36 in horizonta I lit.

39, so that as the driving-shaft 39 is rotated to this rod 43. The forward ends of these magnet-supports 44 are adjustably connected-to the front to timber 33 by turnbuckle.- rods 45, so that t e supports 44 may be adjusted to and from the troughs by operating (the turnbuckles."

ranged in rows above the troughs, two rows for each'trough, so that as the troughs are reciprocated one row of the magnets is over the trough and theio ther row of magnets is at I one side of the trough, the relative position being changed at each movement of' the trough. The magnets are arranged close to gether longitudinally of the trough, so that the-planes of magnetic influence overlap in Mercury 54' is plac'edinthe bottom of the. Oil 55 is placed on top 'of'the' the direction of the flow of the ore, thereby subjecting the ore to a constant and increasing magneticinfluence. ii

The circuit-breakers 48 breakers being constructed as shown in Fig; 4. The dashot 50 is mounted upon the base 51 of. insu 'ation.- A post 52 is mounted" beside the dash-pot,- and a lever 53 is pivot-' ally connected to the upper end of the postf dash-pot. mercury-,.and a plunger 56'-is connected to one end of the lever 53 and slides through the insulation-57 into the oil and mercury.

' A retractile coil-spring 58 connects the lever 1 down into the mercur to the base, as required to ull the plunger T e opposite ends of the levers 53 from t- -e'plungers are curved upwardly, and the fingers 5.9 and 60'ar'e adjustably attached to the support 21 so as' to alternately engage the levers "53 as the troughs are rec pro'cated and pull 'the lungers out of the mercury.-- ,Theline'61 'eads from the generator 62 through the righthand row 63 of each se'tm't magnets to the dash-pot ot the ci-rcuit-breaker'49. A similar line 64 leads from the generator throughthe lefthand row 65*of each set of magnets to the dash-pot of thecircuit-breake'r 48. The re.- turn wire 65 connects the generator with the osts 52 of the circuit- breakers 48 and 49. he shunt-wire" 66 connects the wire 61 at each end of the-row of magnets, as required to partly short-circuit the magnets. Said 'wire '66 passes through the incandescent lamps67. Asimilar. shunt-wire 68 connects the wire 64 on each, side of the-magnets-65 and passes through the incandescent lamps 69. The introduction of the shunt- wires 66 and 68 through the lamps 67 and 69 takes u self-induction, lessens t e tendency to spar at the circuit-breakers and quickens the letgo action j of the magnets. The circuitthe receptacle 7 6 and spout 77- r The hi and 49 are mounted upon the rear timber 36, said circuit breakers are arranged so as, to excite the magnets when the magnets are directly over the stream of ore in the troughs and to denergize the magnets after the troughs have been moved from under the magnets, as required to take up the ore from thetroughs, carry it over the drop it, i

In order that the entire stream of ore may be subjected to the force of the magnets, the magnets are made broader than the troughs,

vso that the rounded edges of the magnets are projecting beyond the sides of the trough, as

shown in Fig. 1. 4

The ore which drops from the first pair of magnets will fall into the receptacle 70 and pass downwardly through the spout 71, and the ore from the second pair ofmagnets will fall into the receptacle 72 and pass downwardly into the spout 73, and ore which falls from the last pair of magnets 74 will pass into the receptacle and the spout 75, and the refuse which passes the magnets will fall into hest grade of ore will fall into the receptacle 70 and the middle grade into the receptacle 72 and'the low gradeinto the-receptacle '74. The refuse which falls into the receptacle 76 may contain some ore and may be reground and again passed through the apparatus.

The reeeptacles'run crosswise of the'inclined trough, so that similar grades of ore from the different sets of magnets will 'fall into the same receptacle. r

I am aware that magnetic separators-of 'thedrum type have beenconstructed to lift them'agnetic material out of a stream of material moving over an inclined plane or falling freely through the air or conveyed in a quiescent mass by means of a belt; but heretofore the magnetic field generated about the plane of the moving material has been of greatlyvaiying intensity, the maximum force being exerted in a narrow line across the stream, as in the-case'of the use of rotat1ng-drum-1nagnets or in the case of stationary magnets hav ing pointed or wedge-shaped pole-pieces, or

elsethe field was much more powerful on one side of thestream than the other. proved method is subject to none "of the above objections.

,-By the-use of my improved method I dis-- pense entirely with the interposition of a belt or other carrier between-the materiala'nd the -magnets and provide a magnetic field of a comparatively large area, thereby greatly increasing the working capacity of the machine "over the ordinary types, especially in the case of ores carrying high percentages of magnetic. material. By arranging the magnets of different potentials the minerals may be classified according to their varying permeability, and by limiting the strength of the magnets to the power required only to lift material of definite permeability a great savsides of the troughs, and

I do

My iming of power is accomplished and a more nearly equal intensity of magnetic attraction over the Working area of the adjacent mag-.

nets is effected, which is peculiar entirely to the reciprocatin or oscillating-magnets traveling back and orth across the width of the stream of material. 7

I claim 1. The improved magnetic ore separator and classifier consisting of an inclined trough required to pick up the ore, pass it over the sides of the trough and drop it therefrom, substantially as specified.

2. The improved magnetic ore separator and classifier consisting of an inclined trough having a smooth non-magnetic surface, means for conducting the ore through said trough, and causing the same to roll and tumble therein; a series of magnets arran ed above said trough in oblique pairs, so t at the planesof magnetic influence overlap longitudinally of the direction ofthe passing ore, means for reciprocating the trough crosswise relatively to the said magnets, and means for intermittently exciting the said magnets, as required to pick up the ore, pass it over the sides of the troughand drop it therefrom;-said magnets being graduated in strength, the weakest being at the top,and'

spern'ied. I

v 3. The improved magnetic ore separator and classifier consisting of an inclined trough the strongest at the bottom, substantially as having a smooth non -magnetic surface,-

means for conducting the ore through said trough, and causing the same to roll and tum-- ble therein; a series of magnets arranged above said trough in oblique pairs, so that the planes of magnetic influence overlap longitudinally of-the direction of the passing ore, means for reciprocating the trough crosswise-relatively to the said magnets, 'means for intermittently exciting the said magnets, as required to pick up the'ore, pas-s it over the sides of the trough and drop ,it therefrom; said magnets being graduated in strength, the Weakest being at the top and the strongest at the bottom; and independent receptacles for each grade of ore, substantially as specified.

4. The improved magnetic ore separator and c lassifier consisting of a suitable hopper having an outlet, means for regulating the flow of-ore through the said outlet, an inclined ore, pass it over the si esof the trou h and trough having a-smooth non-magnetic min means for reciprocating the trough crosswise relative to the magnets; and means" for intermittently exciting the magnets as required to pick up the ore, pass it over the sides of the trough and drop it, substantially as specified.

5, The improved magnetic ore separator and classifierconsisting of an inclined trough having a smooth non-magnetic surface, means for conducting the ore through the trough, an inclined bottom having a smooth non-magnetic surface, ad'ustable non-magnetic si es adjacent said ottom, means for causing the ore to roll and tumble thrnugh the trough, a series of magnets arranged 85 above the trough in oblique pairs, so that the planes of magnetic influence overlap longitudinally of the direction of the passing ore, means for reciprocating the trough'crosswise relative to the magnets, and means for intermittently exciting the magnets to pick up the, ore, pass it over the sides of the trough and drop it, substantially as specified.

6. 'The improved magnetic ore separator and classifier consisting of an inclined trough having a smooth non-magnetic surface, means for conducting the ore through the trough, means for adjusting the" incline of the trough, a series of magnets arranged above said trough in oblique pairs, so that the planes of magnetic influence overlap longitudinally of the direction of the passing ore, means for reciprocating the trough crosswise relative to the magnets, and means for intermittently exciting the ma nets to pick u the ore pass it over the sides of the troug and drop it, substantially as specified.

7. The improved magnetic ore separator and classifier consisting of an inclined trough I having a smooth non-magnetic surface, means for conducting the ore through the trough, means for adjusting the'incline of thetfough, a series of magnets arranged above the said trough in oblique pairs, so that the planes of magnetic influenceoverlap longitudinally of the direction of the passing ore, means for reciprocating the tron h crosswise relative to the magnets, means t or intermittently exciting the ma nets to pick up the drop it; and means for regulating t e distance between the magnets and the ore, substantially as specified.

8. The improved magnetic ore separator and classifier consisting of an inclined trough having a smooth non-magnetic surface, a series of magnets arranged above said trough ,in-oblique pairs, so that the planes of magnati e iniilience evel lap lengitudinelly'of the I testimeny whereof "1.11m signed my direction ofthepessing ore 1 a series of l-am'ps name to thisspecification in presence of two i in the circuitto t ake up se -i iduction, lessen subseri-bing witnesses. the-spark andgquicken the release of said 5 magnets; and -mea1is fot-reciPrqcbtingthe With: f trough erosswiserelativetothe megnetgsub- M. P. SMITH;

i stn ntislly esspeoified M'LH'ABBINQTOR.

I GUY H. WAR I'NG.

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