US1527071A - Magnetic separator - Google Patents

Description

Feb. 17, 1925, 1,527,157?! o. B. PEcK, JR

MAGNETIC SEPARATOR Filed Oct. 5, 1923 Patented Feb. 17, 1925u ORRIN`B. PEGK, JR., 0F LOS ANGELES, CALFORNIA.

MAGNETIC Application filed October To all whom t may concern:

Beit known that I, ORRIN B. Piron, J r., of the city of Los Angeles', State of California, have invented cert-ain new and useful Improvements in Magnetic Separatore, ofwhich the following is a` specification.

lly invention relates'to separation, classiiication and concentration of mixed solids while in a sutliciently crushed state, the com` ponent parts of which are strongly magnetic and non-magnetic, or contain parts also which are relatively strongly `and weakly magnetic, by subjectingA such material to the force of magnetic attraction while 1in asuspendedor depending position, under the in `tiuenceof magnetic attraction, in a state of submergence in liquid, and at thesame time to vibrations and washingenergy of'such liquid.

In the accompanying drawings, Fig. l is a top plan of my. separator.

F ig. Q'ispartly aside elevation and partly a vertical central section of the apparatus shown in Fig. l.

Fig. Sfisa projected or straightened out :illustration partly in elevation and partly in sections of certain `parts of the apparatus, principallyshowingthe relative position of the electromagnets and the tray, or liquid andematerial containeigto givefa better un- `derstanding -of 4their operating relations.

lligsl is a detailfoffoneof theimagnets, with some of its `associated,part-s, indicating the form of suspended accretion-ofmaterial when themagnet is located and connected 4in one `way, and Fig. 5 is quite similar to lEig.

4l, excepting thatiit illustrates two magnets located and connected so as to form a magneticgap between the two, which will collect the magnetic.material:in the form substanhv 4 tially as indicated.

As means forcarrying my process of vseparation and classification, herein described, into effect, l provide a ycomparatively slowly rotatable supporting .member 2, which is ,-mountedion a shaft, which shaft is both laterally journalled and stepped in aber Il, mounted on the bed plate 5 of the separato-r.

rlhefupperpart of this shaft isjournalled in a boX (lyon the upper end portion of a `ibraclretorstand 7,'which ismounted at its base on the bed plate of the separator. The member 2, is secured to the shaft, as indicated, preferably through a hub 8, and on the upper end yof the shaft, as best illustrated in Fig. 2, is a worm vwheel 9, engag- SEPARATOR.

1923. serial no. 666,276.

ing a worm lO, which is carried on a shaft ll, journalled in boxes 12 and l'respective ly. 0n the outer end of this shaftismounted a pulley ist, by which rotatioirma f be imparted to the shaft and its connected parts, from any appropriate source;` of power.

Suitably positioned on and carried bythe member 2, are multiple electromagnets l5, of structure and strengthto serve the p urposes required in operation of the separator. rl`hese magnets are illustratedasv having :enlarged magnetic heads Vor Lpoles 16, ositioned so that their several lower surfaces will be in substantially a uniform transverse plane, adapted to uniformly approachand be carried by their supportingelement .2,in close proximity to the upper surface-,of a liquid containing receptacle 17.

rl`his container or receptacleis'preferably circular to conform to the circular assemblage of the magnets, as indicatedfin Fig. l, and is preferably ofnon-magneticmaterial, positioned so that the upper surface yof its top wall or cover-.1S maybe located closely to the lower surface of Ythe-sev ralfmagnets, as illustrated, and permit suchimagnetsie-be carried around in close proximity .to Athe Vsaine.

rlhis upper wall, which isespeciallyindicat-ed by the numeral 18, ispreferably constructed with zones or portionsiof different thicknesses, as best illustrated'in Fig. 3. One

part thereof, which is the initial or feed Zone in operation, is comparatively thin,to enable the material introduced into the tray to approach very closelyto the magnets, and farther around in the course-oftravel'ofthe magnets there is a. yportion of this wall, which l have indicated as 18, appreciably thickened, in order to deflect the material being operated on, a greater distance from the magnets, which will result in the intensity of attraction on such material at this part, being lessened, from the fact that, as is well known, the intensity orefl'ective force of an electromagnet, lessens with increased distance between the Asubstances operated on and the magnet.

Still further around in the course of movement of the magnets, the wall is again increased in thickness, which portion is indicated by 182, and here the effective strength of attraction on the material will be further lessened, for fthe same reason stated above, and still furtheralong, as in dicated by 188, the thickness of this wall is further pronouncedly increased, in order to deflect the material then remaining, out of the highly effective Zone of the magnet-s and enable it to be easily removed by means of a liquid jet under-pressure, supplied by a pipe 19. The bottom part of the containcr is at this point depressed sufficiently to afford desired room for insertion of the pipe, 19, and its proper operation.

The container is flexibly supported in position by means of suitable members 20, in a manner to enable it to be quite rapidly vibra-ted by any desired means, as by a shaftI 21, having a crank formed on its end, which connects to the container by a suitable connecting rod or part 22, through an appropriate fastening 23. This shaft may be rotated by a pulley, 2-1, mounted on its outer end, the shaft being journalled in a box 25, to rotatably hold it in position.

T he supporting frame of the separator may be of any form desired, but, in addition to the bed plate 5,' and supporting bracket 7, I have shown connecting` or supporting parts 28. Y

To serve in partly dividing the internal part of the container into zones or coinpartments with respect to the different thicknesses of its upper wall 18, I have provided partial partitions 26, as indicated in lP ig. 3, and to serve as discharge or drainage means for material and liquid from the container, there are provided hollow short pipes or nipples 27.

ln the operation of .my separator, the magnet-supporting member 2, is revolved at a comparatively slow speed through the mechanism described for that purpose, and mate-rial for separation is introduced into the container through a feed pipe 29, con-' necting with any suitable source of supply, in quantities sufficient to maintain the chamber in the container full of the material and liquid. The mixture should contain aV suliicient proportion of liquid to enable it to flow very freely.

As soon as the material enters the container in close proximity to the magnets, the magnets, of course, having been properly energized for effective operation, the magnetic constituents of such mixture will be at once attracted and heid in a suspended position in the liquid, against the under-side of the upper wall 18 of the container, while the non-magnetic material will settle or seek the bottom of thc container, or partly remain in disconnected suspension in the liquid.

its the magnetic constituents are collected in the manner just stated, they will carry with them in entanglement, more or less non-magnetic particles, but during the operation, the container is quite rapidly v1-.,

insated through revolution of the pulley 24 and its connected part, producing a washing and vibrating action of the liquid, which in effect will wash and shake out the entangled non-magnetic particles, and further, in the revolution of the magnets, this collection or accretion will be tumbled, scoured and carried along around the course of movement of the magnets in an agitated state on the underside of the wall 18, giv- 'ingl further opportunity for washing and eliminating the non-magnetic particles which will fall in this, l'ieing in the first part of the container with relation to its operation.

As the magnets revolve, movingl with them the magnetic accretion along on the under side of the wall 18, this material will be progressively brought within the zone of greater thickness 18 of the wall, thereby being deflected a greater distance from the magnets, and consequently the strength of magnetic attraction operating on the same will be lessened, and then, under the washing` and vibrating influence, the constituents being so moved, which are of weakest magnetic intensity, will be washed, shaken and separated from those more strongly magnetic, and be collected in this part of the container, and moreover, in the further rotation of the magnets, the constituents remaining on the under-side of thc wall will be moved to the Zone 182 of still greater thickness, and into a weaker influonce of magnetic attraction and here, those then relatively magnetically weaker Will in like manner be detached and separated and then collected in that portion of the container, while those most strongly magnetic still remaining sufficiently under the influence oi' the magnets, will be moved further around Y in the container to the thickest portion 183 of the wall, where they Will in such movement be deflected far enough away from the magnets to enable the accretion to be easily washed off by the impact of liquid from the pipe 19, employedfor that purpose.

It will therefore be seen that in this performance there will first be separated the non-magnetic constituents, then those relatively weaker magnetically, then those relatively of medium magnetic susceptibility, leaving those most highly magnetic, all of which constituents or products may be drawn or flow from the container through their respective discharge passages therefrom.

rihe magnets may be relatively positioned and connected in a manner as to produce independent or individual effects in the accretion of the magnetic constituents in operation, as indicated in Fig. 41, or in manner as to form effective magnetic gaps as indicated in Fig. where the accretion of material to a large extent forms over the gaps so produced. This may be determined as desired, governed more or less by the character of material being operated on.

It will of course be understood that the energizing current to the magnets shall be proper and sulicient for the uses intended and that the rapidity or violence of vibration and Washing etlect of the liquid in the container shall be such as to suitably cooperate with the effective strength of the magnets and the material under treatment.

What regard as new and desire to secure by Letters Patent is:

1. ln a magnetic separator the combii'iation of a supporting member, adapted to be rotated in a horizontal plane, an electromagnet thereon adapted to be carried by said member', a vibratable liquid and material container located below said magnets with its top side below and adjacent to the path ot travel of the magnet, means for revolving the supporting member and means for vibrating the container, substantially as described.

2. In a magnetic separator a supporting member adapted to be rotated in a substantially horizontal plane, an electro-magnet thereon adapted to be carried by said member, a vibratable liquid container located in proximity to said supporting member with one side adjacent to the path of travel of the magnet, having Zones of increased thickness, means for revolving the supporting member and means for vibrating the container, substantially as described.

3. In a magnetic separator a rotatable supporting member, multiple electro-mag'- nets mounted thereon, having the lower surfaces of their poles on a substantially uniform plane and adapted to be carried in a circle by said supporting member, a liquid and material container located in proximity to said pole surfaces, having a wall With successive areas of increased thickness in the path of travel of said magnet, means for rotating the supporting member and means for vibrating the container, substantially as described.

ORRIN B. PECK, JR.

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