US1480315A

US1480315A - Magnetic separator

Info

Publication number: US1480315A
Application number: US504433A
Authority: US
Inventors: Thompson Herbert Huband; Davies Alfred Evan
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-09-30
Filing date: 1921-09-30
Publication date: 1924-01-08
Anticipated expiration: 1941-01-08

Description

Jan. 8 1924.

. 1,480,315 H. H. THOMPSON ET AL MAGNETIC SEPABATOR Filed Sept, 30. 1921 Patented Jan. 8, 1924.

UNITED ATE AT NTo FICE.

HERBERT HUBAND 'rHoMPsoN, or. BIRMINGHAM, enn ALFRED EVAN DAVIES, or

' .TANWORTH-IN-ARDEN, ENGLAND. Y 1

: nnennrrc snreimron.

Application filed Septemher 30,1921; Serial No. 504,433.

To all whom it may concern.

Be it known that we, HERBERT HUBAND THOMPSON, of 137 Gravelly Hill, Birmingham, England, and ALFRED 'EvAN' DAvms,

of the Ingle, Ladbrook Park, -Tanworth in- Arden, Warwickshire, England, both British subjects, have invented certain newand useful Improvements in and Relating to Magnetic Separators, of which the follow- Hi ing is a specification.

as the magnetic reluctance of air is consider- It is well known that to obtain the best conditions for the working of magnets as far as possible their design should provide an iron path for the magnetic lines of force able. In magnetic separators in which liquids or solids in a more or lessfinely divided state, are passed over magnets to abstract the magnetic materials from non- 30 magnetic or the more .mag netic from the feebly magnetic, the necessity for the flow orconveyance of the materials to be treated over the magnets has caused the design of apparatus of this character to depart from the above principle. Accordingly the-magnet poles in this class of apparatus have been directed in the air, so-to -speak, or have been covered with a non-magnetic surface over which the material to be treated has passed.

In some cases to enhance the magnetic field a second or further magnet pole or poles -may be placed above the air gaps through which the material passes, but this entails considerable expense in winding, working costs and repairs and frequently there are considerable difficulties in the design of the separator which renders this course suitable metallic path for the lines of force emanating from the pole pieces, which are separated from the armature pieces only by a narrow air gap, and greatly enhance the magnetic intensity at the magnetic edges which are usually directed toward the materials to be treated.

The application of the invention to diflinvent-ion applied.

pieces for a tray or trough type of separator ferent types of separators will necessarily involve constructional differences in the arrangement for supporting and locating the armature pieces, in correct position. Accordingly We have illustrated examples applied to, different separators in the appended drawings; i l I Figure 1 is a longitudinal section of a tray or trough separator with one form of the Figure 2, is a cross section through Fig. 1. Figure 3, is a perspective view showing one method of making up the armature into a frame for placing in the tray or trough.

Figure 4, is a perspective view of another frame made up of armature pieces the frame being shown inverted. V

Figure 5, is a sectional view showing a frame as at Figure 4 applied to a trough separator.

V Figure 6, is an enlarged detail view of a portion of Figure 5.

- In separating troughs for treating liquids,

treat dry materials, the magnets are arranged below the trough or tray to magnetize a number of bars or strips which are carried across the bottom of the trough from side to side. The magnetic'bars or strips project more or less from the nonmagnetic bottom of the trough to interpose a number ofmagnetic edges in the path of the liquid or materials under treatment.

The presentinvention is not concerned with the construction of the troughs or trays which may follow on any approved lines; these troughs are illustrated in Figures 1, 2, 5 and 6 to show the application of the present invention to them.

In these figures 0; represents the magnet bars or strips projecting from the false bot- "tom 6 ofthe trough. ,In Figures 1 and 2 the armature is in the form of'a single plate 100 of iron or steel 0 supported a'short distance above the bars a" by nonmagnetic ribs d, or by non-magnetic pegs, pins or the like secured to the plate and resting on the bottom of the trough. This is a very simple form but a more satisfactory arrangement is to build the armature pieces as bars e Figures 3 and 4, assembled into a frame with connecting members f and with non-magnetic strips 9 or pegs it so that the frame may be V l or in troughs or trays for reciprocation to .1

placed .in a trough or the like with the bars 6 facing toward the bottom of the trough and suitably distanced therefrom. The frame may, if desired, be built up with nonmagnetic dividing portions i between the armature bars 0.

As shown at-j, projecting iron or steel portions may be secured to the faces of the armature bars 6 as Well as to the magnetic 7 bars a.

We claim- 1. In a magnetic separator, a troughfor arranged in the upper part of the trough and suitably distanced from the said magnetic surfaces below them, and energized by the said magnets.

or tray type in which thematerial to be treatedis passed over iron magnetic surfaces magnetized by magnets below the bottom of l the trough, the combination with the magnet surfaces of the separator, of armature bars to alternate with bars in the tray or trough, and projections on the armature bars and on the magnet bars of the trough substantially as described.

In testimony whereof we aflixour signatures.

HERBERT HUBAND THOMPSON.

ALFRED EVAN DAVIES.

2. In a magnetic separator 0f the trough