US823235A - Magnetic separator. - Google Patents

Description

No. 823,285. PATENTED JUNE 12; 1906.

H. H. WAIT.

MAGNETIC SEPARATOR.

APPLICATION FILED MAR. 20. 1905.

2 SHEETS-SHEET 1.

W jgm izzzz PATENTED JUNE 12, 1906.

H. H.WAIT. MAGNETIC SEPARATOR.

APPLICATION FILED MAR. 20. 1905.

2 SHEETS-SHEET 2.

To all whom it may concern:

. UNITED STATES PATENT OFFICE.

HENRY H. WAIT, OF CHICAGO, ILLINOIS, ASSIGNOR TO INTERNATIONAL SEPARATOR COMPANY, .OF CHICAGO, ILLINOIS, A CORPORATION OF NEW, JERSEY.

' MAGNETIC sEeARAToR.

Specification of Letters Patent.

Patented June 12, 1906.

Applioationfiled March 20,1905, Serial No. 251,074

Be it known thatI, HENRY H. WAIT, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Magnetic Separators, of. which the following is a full, clear, concise,

and exact description.

My invention relates to a magnetic oreseparator, and has for its object to rovide a simple machine requirmg very htt e energy for its operation in which the magneticallyattracted particleswill be effectively separated from the non-magnetic material and will not be liable to mingle therewith after the initial separation has taken place.

The ore-separator of m invention may consist sim ly ofapassage etween magnetic surfaces, t ough which the material is assed, with means for providing diagonal lines of magnetic concentration or magnetic riflies across the assage, adapted to divert the more permeab e particles, in combination with dividers located above the riifles in position to prevent the attracted particles which were diverted by one'rifile from beingdrawn back again toward the path of the non-magnetic material in approaching the succeeding rifile.

I will describe my invention particularly b reference to the accompanying drawings, illiistrating the preferred embodiment thereof, and the parts, improvements, or combinations which I regard as novel will be pointed out in the appended claims.

Figure 1 is a plan view of the ore-se arator.

Fig. 2 is a sectional elevation thereo on line in such a way as to form a working passage through which the material to be separated is passed. A feeding chute or hopper A is shown at the top, by which the material may be introduced into the working passage between the two ma'gnet poles. Magnetlc particles under the influence of a magnet tend to move toward-the densestv ortion of the field. In the ore-separator 1 lustrated the working passage is'p'rovided with a series of magnetic rifiles or lines, along which the magnetic density is increased, these riffles or lines of magnetic concentration extending diagonally downward across the path ghlriough which the material to be separated a s. Preferably the magnetic riffles are provided by forming the opposing faces of the magnet-poles as indicated in Fig. 4-that is to say, with a series of rejections gradually sloping toward each ot er in a downward direction and ending in sharp edges, at which the magnetic flux will be most highly concentrated. Asshown in Fig. 3, these sharp edges will extend across the poleieces in diagonal lines. The magnetic r' es will therefore form what may be called an inclined hammock of magnetic 'lines of force, which will tend to arrest falling magnetic particles and cause them to follow for a short istance the diagonal course determined by the direction of the riflie, so that in this way the magnetic particles will be separated from the non-magnetic material falling straight down.

It will be noted that there is a increasing density of the magnetic flux between the ridges on the pole-faces, this flux reaching a maximum at the sharp lower ed es of such ridges. The magnetic materia leaving the lower edge of one of these ridges or riflies will therefore as it continues to fall be subjected to an increasin magnetic attraction toward the next r e, and as the next rifile is diagonal the tendency will be for the magnetic material to be deflected back again toward the path of the non-magnetic particles. This action is, however, not as strong as the deflecting action of the sharp edge of the rifiie. It is nevertheless cons1derable, and I therefore provide divider-plates P P, located between the paths of the magnetic and'non-magnetic material as it leaves each rifile, and extending downward to the edge of the succeeding riifle, so as to prevent the attracted material from being drawn back again into the ,path of the nonattraoted material. In the drawings the rifiles are shown at different distances apart and at different angles of inclination, the ebgraduallyma fre ject being to proportion the magnetic action to the increase in velocity of the falling particles.

'1. The combination with magnet-poles of opposite polarity facing each other to constitutea working passage, of means for directing material to be separated throughsaid pas sage, means for concentrating the magnetic flux across said working passage in lines diagonal to said passage, and dividers above the diagonal lines of concentration adapted to prevent the magnetic particles from being deflected in approaching said lines of concentration.

' 2. The combination in a ma netic separator having a working passage, 0" means for es-f tablishing a magnetic rifle diagonally across said working passage, and a divider-plate in the path of material approaching the rifle, adapted to prevent the magnetic particles from being deflected in approaching said rifle substantially as and for the purpose set forth.

3. In a magnetic separator, the combination with a series of magnetic projections, of means for dpassing material to be separated across sai projections, and divider-plates separating the attracted and non-attracted particles located in the path of material in the approaches to said projections, whereby the glnetic particles are permitted to move e y under the influence of the projection in one part of the field, but are prevented from moving in the opposite direction where the field has a counter action.-

4. The combination in a magnetic separator having a working passage, of magnetic rifles in said working passa e, and a series of by attracted material leaving the rifle upon one side of the divider-plate is prevented from being diverted toward the path of the non-attracted material by'the action ofithe succeeding rifle.

6. In a magnetic separator, the combination with opposing magnet-poles of opposite polarity facing each other to constitute a workin passage, of a series of ridges upon said p0 e'faces to concentrate the magnetic flux in lines diagonal to the working passage, the angles of inclination of said diagonal lines being increased toward the lower end of the passage: 0 I V 7. a magnetic separator, the combination with magnet-poles of opposite polarity facing each other to constitute a'workmg assa e, of a series of diagonal magnetic rifles m sai working passage, said rifles being located progressively at increasing distances apart and at progressively greater angles of inclination.

8. The combination in a magnetic separator having a Workin passage, of diagonallyinclined magnetic ri es in said working pas; sage, and vertical dividing-plates located above said rifles, said rifles being spaced at successively greater distances apart and With successively greater inclinations toward the lower end of the working passage, substantially as set forth.

9. In a magnetic separator, the combination with ma netpoles of opposite polarity facing each otfler to constitute a Working passa e, of means for establishing a magnetic r' e' dia onally across said passage, and a divider-p ate in the path 0 material approaching said rifle.

10. The combination in a magnetic separator havin a workin passage, of diagonal ma netic rifles in sai passage, and a series of ivider-plates between the rifles between the paths of the attracted and non-attracted particles, adapted to revent said attracted particles from being (Iiawn into the path of said other particles.

In witness whereof I hereunto subscribe my name this 13th day of March, A. D. 1905.

HENRY H. WAIT.

Witnessesi IRVING MACDONALD, DE WITT C. TANNER.

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