US876642A - Centrifugal concentrator. - Google Patents

Description

PATENTED JAN. 14, 1908.

2 SHEETS-SHEET l.

INVENTORS.

a @KEY yad@ E. HEARING & FLA. DUDLEY. GENTRIFUGAL GONGENTRATOR.

APPLICATION FILED JUNE 5.1907.

E. HEARING & F. A. DUDLEY.

CENTRIFUGAL CONCENTRAI'OR.

APPLICATION FILED JUNE 5.1907.

2 SHBETS-SHEET 2.

'lill/[111111110 WITNESSES PATENTED JAN. 14, 1908.

EDWARD HEARING AND FRED A.'DUDLEY, OF KELLOGG, IDAHO.

CENTRIFUG-AL CONCENTRATO-I..

Specification of Letters Patent.

Patented Jan. 14, 190e.

Application filed June 5. 1907. Serial No. 377.352.

To all 'whom it may concern:

Be it known that we, EDWARD HEARING and FRED A. DUDLEY, citizens of the United States, residing at Kellogg, in the county of Shoshone and State of Idaho, have invented new and useful Improvements in Centrifugal Concentrators, of which the following is a speciiication.

Our invention relates to an apparatus for concentrating ores and like material, and it consists in the combination of parts, and in details of construction which will be more fully explained by reference to the accompanying drawings, in which- Figure 1 is a vertical section showing the construction of our centrifugal concentrator. Fig. 2 is a plan view lpartly broken away. Fig. 3 is a section of the rim.

This invention is a centrifugally acting concentrator which is designed to be used in the separation of' iine ore from pulp and slimes which accompany it, and which are so hard to separate on any other type of apparatus now in use.

The machine is designed to run at a high rate of speed, and acts by the retardation of a portion of the material which is passing over the disks which will cause the ore to be carried back and delivered to what we term hydraulic separators" on the outer periphery of the machine; and from which separators the separated material is discharged into collecting launders or receivers.

1, 2 and 3 are disks which may be of any suitable diameter and proportions, and which are separated from each other by metal blocks 5. These blocks may be set radially or tangentially to a central circle of small diameter, and serve to hold the disks the desired distance apart.

For a proportionate apparatus, the upper disk may be 6 feet in outside diameter, and have an 18 inch central opening; this inner edge being curved upwardly as shown.

The central diskmay be flat, to be 5 feet more or less in diameter, and secured to a vertical drive shaft or arbor21 by means of a cast iron hub or center 19 carried by the driving shaft or arbor.

The lower disk may have an outside dialneter of 6 feet, and the central opening of approXimately 2 feet 5 inches; the periphery of the central opening being curved downwardly to form a lip which may fit and discharge into the tailing launder or receiver, which is shown at 28.

The vertical shaft or arbor 21 is here shown having a stem -or spindle 22 which rests and is turnable upon anti-frictional support or step made in any usualor suitable manner as illustrated at 23.

26 is a base or standard suitably secured in place and having an upwardly extending arm carrying a journal-box 25 for the upper portion of the arbor.

29 is a pulley between the upper and lower bearings, and which pulley illustrates ameans for transmitting motion to the vertical arbor or shaft, and the parts connected therewith.

The outer rim 4 of the machine incloses y the periphery of the disks 1 and 3, said rim being preferably made in sections. In the present case we have shown this rim made in four sections, leaving spaces of about 4 inches at their contiguous ends; and these spaces are iilled by the hydraulic separators to be hereafter described.

The rim may be madefrom 4 inch, or other dimensioned channel iron or steel, and bolted to the upper and lower disks which are thus held that distance apart.

The hydraulic separators consist of an exterior cast case; each case fitting into the space prepared for it between the end of the rim sections, and the case is `bolted to the rim and also to the outside disks 1 and 3. The inner faces of these separators are depressed or saucer-shaped spaces which connect with openings 7 leading from the separator to the interior of the machine, and through these openings the ore must pass.

From the separator chambers, pipes 8 of small size curve downwardly and inwardly, and discharge into a launder or .trough 27 through which all the separated ore must pass.

9 represents the interior chamber of the separators which is illed with water under hydraulic pressure, and through this chamber all the ore mustpass.

10 are radially disposed hydraulic pipes which furnish water to the separator and which revolve with the machine.

11 is a hollow cross having a screw upon one side to connect it with the vertical'shaft, and an opening upon the upper side to receive a vertical and revoluble hydraulic pipe. The radial pipes 10 extend outwardly from this cross yas previously stated. The main upright supply pipe 12 is thus revoluble with the machine.

' ./13 is a stationary pipe through whichl Water is brought to the apparatus and delivered'to the pipe 12.

The pipes are connected by a stuffing-box or other suitable joint which allows the lower pipe 12 to turn with relation to the supply pipe 13.

15 is a valve by which the supplyofwater to the apparatus is controlled.

The pipes 10 are here shown as extending radially outward from the central cross to a point intermediate between the center and periphery where they are carried upward above the upper disk 1; thence outwardly to discharge into the separators. These changes of direction are effected by means of elbows at 17 and 18; or in any usual manner.

30 is a supply pipe or launder through which the pulp is brought to the machine, and is delivered through the central opening of the upper disk 1.

The pulp falls. upon the top of the center disk, and is thus thrown outward by centrifugal force to the rim of the machine. The effect of this centrifugal force is to cause the fine particles to reach the rim first; the .heavier ore finding itsl Way'through the pulp to the rim of the machine. The rate of revolution of the machine may be varied and regulated to suit conditions,

' but the tendency will be to travel faster chine itself.

than the Water or pulp, the inert-ia of which causes itto continually fall behind the ma- This will keep the ore moving backwardly from the point or place where it iirst strikes the rim, and when it has arrived at one of the openings 7, a portion of it will pass through t e opening and into the separator 6 to'which it leads; the water under hydraulic pressure assing through the branch pipes 10 into t e chamber of the separator 9, and inwardly through the openings 7 with just enough pressure s o that the ore -Will acted upon by the centrifugal force will pass throughthe opening into the chamber 9 of the separator While the lighter pulp and material Will be prevented from entering. The ore thus received into the separators will fall to the bottomfand will pass out through the discharge pipes 8 which will also be filled with the Water, and the ore thus discharged ass into the discharge assage or laundlir 27 by which it is conveyed) to any desired receptacle or point of discharge. Such portion ofthe ore as passes one of the separators without being caught will continue its way around the rlm until it reaches the It will be manifest that various changesor modifications may be made in this a paratus; but the operation in any case will be substantially similar to that herein described.

Having thus described our invention, what we claim and desire to' secure by Letters Patent is 1. A concentrating apparatus consisting of a plurality of horizontally revoluble superposed disks, independent separating chambers carried by the disks at the periphery thereof and having openings thereinto, each of said chambers consisting of a separate casting' independently fitted to the a paratus, means for supplying the separab e material to he delivered outwardly by centrifugal force, and caused to pass over the openings into the separators, and pipes whereby water' under pressure is delivered intothe separators so as to form a counter current through the receiving openings.

2. In an apparatus for concentrating ores,

a horizontally revoluble circular structure, Y

said structure being formed of sections whose adjacent ends are spaced from each other, means for supplying material near the center to be carried outwardly by centrifugal ac i tion, a series of closed independent chambers located around the periphery and iitted to the spaces between thesections of the structure, said chambers having entrance open- Y having discharge openin s in the bottoms,

an intermediatedisk of ess diameter than the outer ones. and revoluble therewith, means to supply material upon the central portion of said disk to be delivered outwardly against the perforated rim. and means to return waste material towards the centerl beneath the center disk.

, 4. In a concentrating apparatus, a pair of horizontally revoluble disks of substantially equal diameter, a third disk of less diameter disposed' between theV first named disks, separating blocks to which -tlie disks are fixed, and bywhich the distance between them is determined, arim iixed to the peripheries of the upper and lower disks, said rim being formed of sections whose adjacent ends are spaced from each other7 independent castings iixed to the rim and filling the spaces between the rim sections', said castings forming concentrating; chambers and havmg depresslons and lnlet openings connectmg with the central space, means for supplying material upon the central portion of the intermediate disk whereby lit is dislighter material is prevented from entering and is caused to return beneath the central disk, discharge pipes connecting with4 the bottom of the concentrating chambers, and launders into which the ore from said pipe and the tailings' from the bottom disk, are respectively delivered.

In testimony whereof we havehereunto set our hands in presence of two subscribing witnesses.

EDWARD HEARING FREDI A. DUDLEY.

Witnesses: l

JosIAH JONES, E. H. BAKER.

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