US1470011A

US1470011A - Pan concentrator

Info

Publication number: US1470011A
Application number: US548010A
Authority: US
Inventors: Frank E Johnesse
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-03-30
Filing date: 1922-03-30
Publication date: 1923-10-09
Anticipated expiration: 1940-10-09

Description

@61. 9,1923. 1,470,011 I v F. E. JOHNE$SE PAN CONCENTRATOR Filed March V50. 1922 3 Sheets-sheaf 1 WITNESSES 'NVENTOR F. E. Jolmesse,

Oct. 9 1923.

F. E. JOHNESSE PAN GONCENTRATOR Filed March 50. 1922 3 Sheets-Sheet 2 INVENTOR E. E; J0 finesse Oct. 9 1923. 1,470,011

F. E. JQHNEISSE PAN CONCENTRATOR Filed March 50, 1922 I5 Sheets-Sheet 3 ATTORNEYS Patented Uct. 9, 1923.

UNETED @TATES FRANK E. JOHNESSE, OF BOISE, IDAHO.

PAN oononn'rnaron.

Application filed March so, 1929.. 3 Serial No. 548,010.

T all whom it may] concern:

Be it known that I, FRANK E. JoHNEssE, a citizen of the United States, and a resident of Boise, in the county of Ada and State of Idaho, have invented a new and Improved Pan Concentrator, of which the following is a description.

My invention relates to concentrators and more particularly to pan concentrators.

Pan concentrators in general use leave much to be desired with regard to a thor ough separation of the heavier particles of values from the slimes, especially where but slight variation of difference in specific gravity exists between the components of the material being treated and also the ordinary pan concentrator has comparatively limited capacity compared to the motive power required to be expended and the space occupied by the concentrator.

My invention has for its general object to provide a concentrator improved over the prior devices with respect to capacity and with respect to an increased recovery of the values from the material treated.

More specifically, an object of the inven tion is to provide a pan that will effect a stratification of the materials for the escape of the heavier particles and values in a plane below the tailings discharge of the pan and from a point radially outward from the zone in which the slimes collect.

T he nature of the invention and its distinguishing features and characteristics will clearly appear as the description proceeds.

Reference is to be had to the accompanying drawings forming apart of this specification, it being understood that the drawings are merely illustrative of one example of the invention.

Figure 1 is a plan view of a pan concentrator constituting one embodiment of my invention;

'Figure 2 centrator Figure 3 is an inverted sectional plan view, the section being indicated by the line 33, Figure 4, and the pivot of the bearing member On the base omitted;

Figure 4 is a vertical section as by the line 4L4l, Figure 1;

Figure 5 is a fragmentary elevation showing a portion of the partition or the division plate; i

Figure 6 is a plan view illustrating the invention in a modified form;

is a side elevation of said conindicated Figure 7 is a side elevation of the concentrator shown in Figure 6; i

Figure 8 is a detail partly in vertical section and partly in elevation showing the preferred form of the concentrates discharge.

Referring at first to Figures 1 to 5 of the drawings in which the preferred embodiment of my invention is illustrated, the concentrator includes a central distributing structurelO 1n this form of the invention made conical in shape and adapted tore-' 'ceive at its center 'the material fed in any approved way, a fragment of a central feed pipe 11 being indicated. Said structure is formed with a post 12 at the underside having a vertical blind bearing bore 13 in its lower end to fit over a vertical bearing member 14 on a central base 15, the post 12 having a flange 16 at the bottom between which and the base ball bearings 17 may advantageously be employed, said base and flange being channeled annularly to constitute'a ball race.

The outer portion of the structure 10 is in the form of an annular vertical wall 18 which constitutes the inner wall of a channel 19 formed by said wall and an outer shell 20. Said shell 20 adj acent. to the base thereof is directed outwardly and downwardly to form at the bottom of the channel an annular chamber 21 which is thus offset outwardly from the shell 20 for the escape of the heavier particles under the centrifugal force developed in the oscillation'of the pan, as will appear. The pan is adapted to oscillate on rollers 23 in any suitable supporting structure partially conventionally indicated at 22, Figure 4r.

Extending about the pan in thecentering channel 19 is a vertical partition or division plate 241 dividing the channel into two annular compartments, one alongside of the other. For the escape of the heavier material radially outward through the partition 24 to the outer compartment of the pan and to the channel 21 which is at the base of said compartment, said partition 24 is formed with suit-able escape openings, there being indicated a multiplicity ofholes 26 for the purpose and additional'openings in the bottom edge of the division plate. For, the purpose of bringing about an effective agitation -of the material, within and outside of the division plate 2 1, the inner wall 18 is formedon the exterior with radial protuill) berances 27, there being similar protuberances 2S projecting from the inner surface of the shell 20. 7'

A tailings discharge 29 is provided at the front of the pan, which is formed by a lip or curved flange directed outwardlyfrom the shell 20 in a plane below the top edge of the remainder of the shell. At the ends of the tailings discharge 29 are arranged walls 30 extending radially outward from the ends of the shell 20 adjacent the terminals of the tailings discharge 29. A. division plate 24L preferably rises to a plane slightly below the plane ot the top edge of the outer shell 20 throughout its length, consequently that portion of the plate 24 adjacent the tailings edge 29 above the plane of said tailings edge, is clearly shown in Figures 2 and 4. I

A discharge spout 31 is provided extending from the front of the pan at the chamber 21 so that the concentrates will thus find an utlet in a plane materially below the tailings discharge and from a point radially outward from the body of the lighter particles, tailings or slimes. Said discharge 81, it will bev observed, flares laterally and it inclines from the chamber 21 rising to a height above the plane of the tailings discharge. A valve 32 may, as shown, e provided at the base of the discharge spout 31, said valve being turn ably mounted and having a squared end for receiving wrench or the like for turning it to ailord more or less of a passage through said valve to the discharge pipe 31 to thus regulate the flow of the concentrates to said discharge pipe. The forming of the discharge spout flaring; permits the concentrates to spread and therebyclogging of the spout is effectually prevented.

A sight window 38 may be provided in the outer shell 20 as shown in l igure 2.

- A bumper block 34 is providedon the shell 20 at a point diametrically opposite to the spout 31 and the rear of'the pan. At

a point 90 from the spout or the bumper 34 on the wall 20 at both sides of the pan are provided pivoted ears to which connecting' rods 36 are pivotally joined, said connecting rods extending rearwardly in parallel relation and adapted for connec tion with a suitable actuating mechanism to impart oscillatory movement to the pan upon its anti-friction supports. The. bumper block reciprocates between two adjustable rubber bumper blocks 37 suitably supported and positioned in the path of the bumper block 34: so as to be engaged there: by, and thus serving the double purpose of increasing the agitation and causing a rebound of the pan motion, relieving the stress on the connecting rods and cams, or other suitable devices with which the connecting rods may be connected for operation. In this connection it is degirable to point out that the connecting rods preferably lead from suitable cams or wrist pins on a counter-shaft, not shown, adjacent to the rear portion of the pan, but properly spaced relative thereto to permit the necessary oscillatory or reciprocating); centrifugal motion to be imparted to the pan and the contents acted on respectively, the connecting rods having imparted thereto directly opposite action or motion in order to obtain the movement specified. I would state further that my invention resides in the pan proper and not in the means producing the necessary centrifugal oscillatory motion of the pan; hence any suitable means may be employed to obtain the desired motion.

In practice I operate my improved pan with wet ground material although the apparatus is not limited to the use of material wet ground.

In operation the material fed from the pipe 11 or other suitable feed means, falls upon the conical central structure 10 and distributes over the surface thereof and to the channel 19 at the inner compartment of the latter, that is to say, at the inner side of the division plate 24. The oscillatory motion of the pan causes the material in the channel to assume a stratified condition, the heavier concentrates forming a stratum at the bottom of the channel. The stratified material finally arranges itself with the heavier particles filling under centrifugal force the outermost chamber 21, the provision of said chamber greatly facilitating the separation of the heavier concentrates and the separation is further promoted. by providing the outlet to the discharge spout- 31 at the said chamber 21 and therefore radially outward from the tailings discharge 29, and materially below said tailinns discharge. The concentrates also by reason of their greater specific gravity and the result of centrifugal force fill the chamber 21 and rises in the channel 19 in regular gradation upwardly according to the specific gravity and thereby the slimes are effectively prevented from passing; to the discharge spout 31. At the same time the described assen'iblage results in the saving of the smaller concentrates since the settling is progressed under favorable circumstances and over a sutlicient period of time before the concentrates reach the discharge, for the effective settling of all the concentrates.

in Figures 6 and 7 is shown an embodiment of the invention to carry out the distinctive mode of functioning "of my improved pan without the employment of the division plate in the channel 19. VVit-h the division plate omitted the pan is made with a wall 18 at the inner side of the channel 19 rising at the front of the pan above the lower edge of the coned surface of the central feed-receiving structure 10. The up per edge 18 of said wall 18 slopes rearw'ardly at opposite sides and terminates as at 18 short of the medial plane of the pan leaving an opening between the terminals 18 for the rearward escape of the material. I provide also vertical barriers 39 extending approximately radially at about the transverse medial plane of the pan between the inner wall 18 and the outer wall or shell 20 and disposed above the plane of the base of the conical surface of the structure 10. Said barriers 39 and the gradually increasing height of the wall 18 serve to prevent the material fed to the structure 10* from passingrto the channel 19 forward of said barriers 39 so that the material will be required to pass in the rear of the transverse medial plane of the pan to gradually progress forwardly in the channel 19 toward the discharge spout 31*, thereby insuring the stratification of the material as well as a movement of the heavier particles laterally outward at the bottom of the channel into the chamber 21 from which the spout 31: leads. The tailings discharge, 29 is substantially the same as in the first-described construction including the end walls 30?. Also, a sight window 38 is provided in the outer shell 2O with the pans shown in Figures 6 and 7. Thedescribed means 35, 36 for oscillating the pan may be employed as well as the bumper 34, which, it is to be understood coacts with the previously described bumper stops 37 or their equivalent. H

In the arrangement of Figure 8 which represents the preferred form of the concentrates discharge the shell, a fragment of which is indicated at 20 is provided with a tailings discharge 29* the same as described above. At the forward side of the channel 19", corresponding with channels '19, 19, is an outlet 32 for the concentrates. Means is provided for regulating the angular position and the total effective length of the concentrates discharge. In the illustrated example use is made of a ball and socket joint 32 between the outlet 32* and a short spout section 31 to which section the main spout section 31 is connected by suitable means, as for example, bolted flanges 31 which arrangement permits of a main spout section 31 being employed of the desired length so that the total effective length of the spout may thereby be varied. At the same time the ball and socket joint or an equivalent means permits of varying the angle of the spout. By the described arrangement the spout may be so formed and so disposed as to regulate the operation according to the material being acted upon and to meet the requirements to permit the operation to progress for the proper separation and stratification of the materials.

I would state in conclusion that while the illustrated examples constitute practical embodiments of the invention, I do not limit myself strictly to the exact details herein illustrated, since, manifestly, the same can be considerably varied without departure from the spirit of the invention as defined in the appended claims.

I-Iavingtlius described my invention, I claim 1. A- concentrator of the pan type, including means to impart oscillatory movement to the pan, means to cause the material to stratify, and a concentrates discharge projecting radially outward and upwardly and arranged to permit the escape of the concentrates under centrifugal force from the lowermost and outermost zone of the pan.

Zen oscillating concentrator of the pan type, having at the periphery thereof a channel, a chamber complementary to said channel and arranged outwardly of said channel, and a concentrates discharge lead ing from the base of the chamber projecting outwardly from said base in the plane inclined upwardly, said discharge being adapted to receive concentrates under the centrifugal force developed by the oscillation of the pan,

3. An oscillating concentrator of the pan type having at the periphery thereof a channel, a chamber complementary to said channel and outward therefrom, and a con centrates discharge leading from said cham her and adapted to receive concentrates under the centrifugal force developed by the oscillationof the pan, said discharge projecting radially outward and upward and flaring laterally toward the outer end.

@L. A concentrator of the pan type adapted to receive movements to, subject the material therein tocentrifugal force, said pan having at the periphery thereof a channel, a chamber complementary to said channel and outward therefrom, a tailings discharge above said chamber, and a concentrates discharge leading from the base of said cham her and adapted to receive the concentrates under the centrifugal force developed by the movements of the pan discharging the same radially outward of said chamber and in a plane above the plane of the top edge thereof.

5. A concentrator of the pan type adapted to receive movements to subject the material therein to centrifugal force, said pan Too llU

having at the periphery thereof a channel, I

a chamber complementary to said channel and outward therefrom, a tailings discharge above said chamber, and a concentrates discharge leading from said chamber and adapted to receive the concentrates under the centrifugal force developed by the movements of the pan, said concentrates dis charge having its outlet end above said tailings discharge.

6. A concentrator of the pan type adapted to receive movements to subject the material therein to centrifugal force, arcuate stratifying compartments in said pan laterally outward from the center of movement, a tailings discharge, and means to permit escape of concentrates from a zone at the base of said compartments below said tailings discharge, said means projecting outwardl and upwardly to a point above the plane of the edge of said tailings discharge.

7. A concentrator of the pan type adapted to receive movements to subject the mate rial therein to centrifugal force, arcuate stratifying compartments in said pan laterally outward from the center of movement, a tailings discharge, and means to permit escape of concentrates under the centrifugal force of the pan, from a zone at the base of said compartments below and radially out-- ward from said tailings discharge.

8. In a concentrator of the pan type adapted to receive movements to subject the material therein to centrifugal force: a feed receiving structure, stratifying means outward of the center of movement of the pan, a tailings discharge from said means at the top, and means to permit discharge of the concentrates under centrifugal force from a zone below, and laterally outward of the vertical plane of, said tailings discharge, said means projecting to a plane above said tailings discharge.

9. An oscillating concentrator of the pan type including a feed receiving structure, a stratifying channel radially outward of said structure, a chamber offset radially outward from said channel and communicating therewith, a concentrates outlet leadtype including a feed receiving structure, a stratifying annular channel below and extending about said structure, a chamber offset laterally outward from and extending about said channel in communication with the latter, a concentrates outlet from said chamber, and a tailings discharge at the outer side of the channel above said outlet.

11. A concentrator of the pan type including means toimpart oscillatory movement to the pan, means to cause the material to stratify on the base of said pan adjacent its outer walls, an outlet permitting escape of the concentrates from the lowermost zone of the pan, a discharge spout at said outlet, and means to vary the angular position of said discharge spout.

12. A concentrator of the pan type including means to impart oscillatory move ment to the pan, means to cause the material to stratify, an outlet permitting escape of the concentrates from the lowermost zone of the pan, means forming a concentrates discharge at said outlet and variable angularly and with respect to its total effective length.

13. A concentrator of the pan type including means to impart oscillatory movement to the pan, means to cause the material to stratify, an outlet permitting escape of the concentrates from the lowermost zone of the pan, and a discharge spout at said outlet composed of sections andadapted to be varied for varying the total effective length of the spout.

14. An oscillating concentrator of the pan type including a feed receiving structure, a stratifying channel outside of said structure and adapted to receive material from the latter, agitating protuberances on the walls of said channel, a concentrates outletin communication with said channel at the outer side of the latter, and a tailings discharge at the outer side of the channel above said outlet.

FRANK E. JoHNEssn.