US1167779A - Concentrating-table. - Google Patents

Description

IVI. J. MORLEY.

CONCENTRATING TABLE.

APPLlCATiON FILED FEB-16| |914. RENEWED )UNE l0. 19l5.

2 SHEETS-SHEET I.

' ila/el J. Marl@ Ma/V @gifle r l y M. J. MORLEY.

GONCENTRATING TABLE.

APPLlcAnoN FILED rss. 1e. 1914. nr-:NEwo1uNE1o,\9|s. 1,167,779..

Patented J an. 11, 1916.

2 SHEETS-SHEET 2- N w ww narran MICHAEL J. MORLEY, OF HAYDEN, ARIZONA.

CONCENTRATING-TABLE.

Specification of Letters Patent.

Patented dan. 11, 1916.

Application filed February 16, 1914, Serial No. 818,942. Renewed June 10, 1915. Serial No. 33,390.

To all whom 'it may concern Be it known that I, MICHAEL J. hfionnnr, a. citizen of the United States, residing at Hayden, in the county of Gila and State of Arizona, have invented certain new and useful Improvements in Concentrating-Tables, of which the following is a specification.

r1`his invention relates to ore concentrators characterized by a shaking table on which the pulp is concentrated, and its object is to provide the table with a cleaning plane defined by a combination of curved surfaces so designed and arranged that the discharge of the concentrates is retarded until it is washed free of non-mineral particles, and also to provide a tailings discharge situated on one side of the table opposite from the concentrates discharge side. These improvements, and other minor features to be pointed out hereinafter, serve to make a more perfect separation of mineral and gangue than is possible with the ordinary type of shaking tables now in use.

In order that the invention may be better understood, reference is had to the aecompanying drawings in which- Figure 1 is a plan view of the table; Figs. 2 and 3 are longitudinal sections on the lines 2 2 and 3-3, respectively, of Fig. 1, and Fig. 4 is a crossfsection on the line i-e of Fig. 1.

Referring specifically to the drawings, the deck 10 of the table is rectangular in shape, its length being greater than its width. The table is supported in such a manner as to give it an upward incline in the direction of the concentrates discharge side 11, and a downward incline from the delivery end 12 to the tailings discharge end 13. The means for supporting and adjusting the table to obtain the proper slope have not been illus trated as they form no part of the present invention and will readily suggest themselves to persons skilled in the art to which the invention pertains. The breast board 1li of the table terminates a suitable distance from the foot board 15 to allow an opening 16 through which the tailings are discharged over a lip 17 into a trough, the latter not being shown. rEhe lip rises a short distance above the deck of the table. Pulp which is to be concentrated is delivered onto the table from a feedbox 18 through holes in the sides and bottom of the box. The feed-box is located at the head end of the table opposite from the tailings discharge end and in the corner of the breast board 14 and the head board 19.

rfhe table is laterally divided into five sec tions or settling areas denoted by the reference characters 20, 21, 22, 23 and 2e. Of course, the number of sections may be varied according to the dimensions of the table. The sections are formed by slightly oblique and tapered ridges 25 which terminate some distance from the concentrates discharge side 11 and thence are continued in ridges 26 which have a smaller degree of slope and a greater width and terminate at the concentrates discharge side 11. These ridges extend in the direction the table is reciprocated or shaken. Along the breast board 111, at the base thereof, extends an incline 27, the same running inthe direction of the length of the table. The ridges 25 abut against the incline 27, and at the point of intersection with the inclines, the ridges 25 have their maximum width, which gradually decreases to a minimum near the end of riifles 28 which are mounted on the apex of the ridges 25. rlfhe slope or pitch of the ridges 25 is con stant and they decrease in width and height in the direction of the concentrates discharge side 11 of the table. The riffies 28 follow the elevation of the ridges 25, and then terminate in a feather edge on the ridges 26, their opposite ends terminating at the breast board 14. The slopes of the ridges 26 are continuations of the slope of the ridges 25, but as shown by their outline in Fig. 1, they are slightly curved and not plane surfaces as the slopes of the ridges 25. The pitch or inclination of the sides of the ridges 25 is greater than `that of the sides of' the ridges 26.

Along the center line of each section 20, 21, 22, and 23 is located a riffle 29 which eX tends parallel to the riflies 28 and is of the same length as the latter. The riflies 29 start from the breast board 111 and taper in height and width from the latter, but do not terminate in a feather' edge.

A short riiiie 80 joins each riifle 28 at a point about two-thirds of the length of the latter from the breast board 1li. lThe riliies 30 join the riffies 28 at an obtuse angle as shown, and terminate a short distance back ofthe forward ends of the riflies 28 and 29.

A single riiHe 31 is placed obliquely in the last section 24, with one end against the incline 2T at the upper side of the tailings discharge opening 16, and the other end extends to a point at or about the center of the section. i

The ridges 2G are separated by a narrow space in which is an inclined groove 3Q which extends a short distance on the table 10 along the approximate line of the riilles 29, rlhese grooves open through the concentrates discharge side 11 of the table.

Parallel to the concentrates discharge side 11 of the table above the deck thereof is a wash Water trough 33 Which distributes dressing 'water to small V-shaped troughs 34 located above the sloping sides of the ridges 26 and having perforations to sprinkle Water on said sides. 'll he deck of the table, and the ridges are covered by asuitable inaterial, such as linoleum. The operating mechanism of the table is indicated at 36, said mechanism imparting to the table a differential reciprocatory motion.

The table operates in the following manner after it is adjusted in. the inclined position hereinbefore described: The table is set in motion by the mechanism 36 Which gives a forward stroke of greater velocity than the return stroke, and also ends the forward stroke with a quick throw or jerk. The feed flows upon the table from the box 1S. rlhe high riilles QS retard the flow toward the foot or end 13, and form deep settling areas. rl`he pulp tends to stratify, the mineral particles coming into closest contact with the table surface, and the non-mineral particles being suspended above the pulp, Which latter flows successively7 around and over the ritiles 28 until the tailings discharge section 24 is reached. The incline 27 prevents local eddies along the corner formed by the breast board 1% and the deck, and also prevents an accumulation of material there. The ridges 25 prevent an accumulation of material in masses behind the riffles 2S, and their slightly oblique position on the table furnishes a path more easily followed by particles collected at their bases. The riliies 2S and 29 are parallel to themotion of the table. The slope of the sides of the ridges 25 allows the pulp passingover the ritlies 28 to flow into the next settling area Without disturbing the selective agitation taking place therein, and said sloping sides also bring the solids nearer the table surface as the pulp flows over the ritlies 28, thus facilitating the settling on the table surface. Particles in contact with the table receive greater' impetus from the table motion than suspended particles, and

therefore progress at a greater rate of speed toward the concentrates discharge side 11. The riflies 29 assist in collecting mineral particles and advancing them to the cleaned ore area and the local Washing surfaces, the latter being the sloping sides of the ridges 26.

The ritlies 30 deflect the mineral particles in such a manner that they spread out in a thin layer or film on the sloping sides of the ridges 26 so that they can be more thoroughly cleaned. rl`he single rifiie 31 delects thermaterial, which is to be Washed, in such Y a Way as to prevent any unequal accumulation of sand at the foot 13 of the table, and to insure a more even and unobstructed discharge. riiies 29 and 30 progress up and along the sloping sides of the ridges 26 on which dressing water is applied from the troughs 34. The dressing water washes back non-mineral particles, thus preventing their discharge with the concentrates, and the riffles 30 prevent any further mining with the pulp or concentrates in that section. The cleaned mineral particles collectin the grooves from which they are readily discharged from the table into the launder or collecting trough, which latter has not been illustrated. The center line of the groove 32 is inclined less than the deck of the table to facilitate the discharge.

l claim:

1. it concentrating table having a lateral reciprocatory motion and a series of settling areas, lateral ridges deiining said areas and terminating at the concentrates discharge side of the table, said ridgesbeing oblique to the direction of motion of the table and having oppositely sloping sides, rifhes on the apices of the ridges and terminating short of the concentrates side of the table, means for discharging Wash Water on the ridges adjacent to the aforesaid side of the table beyond the ritlles, and riftles in the settling areas parallel to and co-extensive with the first-mentioned rifiles.

2. A concentrating table having a lateral reciprocatory motion and a series of alternate high and low rifl'les extending laterally across the table parallel to the direction of motion thereof, lateral ridges on the table having oppositely sloping sides on the apices of which ridges the high rifiles are located, said ridges decreasing in height toward the concentrates discharge side of the table and terminating short of said side, and lateral ridges extending from the terminals of the aforesaid ridges and having oppositely sloping sides, and means for discharging Wash Water on the second-mentioned ridges.

3. A concentrating table having a lateral reciprocatory motion and a series of alternate high and low rifiies extending laterally across the table parallel to the direction of motion thereof, lateral ridges on the table having oppositely sloping sides on the apices of which ridges the high riflles are located, said ridges being slightly oblique to the direction of motion of the table and decreasing in height toward the concentrates discharge side of the table and terminating The particles discharged over the short of said` side, and lateral ridges extending from the terminals of the aforesaid ridges and having oppositely sloping sides, and means for discharging Wash Water on the second-mentioned ridges.

i. A concentrating table having a lateral reciprocatory motion and a series'of alternate high and low riiiles extending laterally across the table parallel to the direction of motion thereof, lateral ridges on the table having oppositely sloping sides on the apices of which ridges the high ril'lies are located, said ridges decreasing in height toward the concentrates discharge side of the table and terminating short of said side, lateral ridges extending from the terminals of the aforesaid ridges and-having oppositely sloping sides, means for discharging Wash Water on the s condnientioned ridges, and concentrates discharge grooves between the secondinentioned ridges.

A concentrating table having a lateral reciprocatory motion and a series of alternate high and low rililes extending laterally across the table parallel to the direction of motion thereof, lateral ridges on the table having oppositely sloping sides'on the apices of Which ridges the high rifiles are located, said ridges decreasing in height and width toward the concentrates discharge side of the table and terminating short of said side, and lateral ridges extending from the terminals of the aforesaid ridges and having oppositely slopinglsides and an increase in Width toward the concentrates discharge side of the table, and means for discharging Wash Water on the second-mentioned ridges.

G. A concentrating table having a lateral reciprocatory motion and a series of alternate high and low riliies extending laterally across the table parallel to the direction of motion thereof, lateral ridges on the table having oppositely sloping sides on the apices of which ridges the high rililes are located, said ridges decreasing in height and Width toivard the concentrates discharge side of the table and terminating short of said side, lateral ridges extending' from the terminals of the aforesaid ridges and having oppositely sloping sides and an increase in Width toward the concentrates discharge side of the table, the sides of the Erst-mentioned ridges being plane and the sides of the second-mentioned ridges being curved, and means for discharging wash Water on the second-mentioned ridges.

7. A concentrating table having a lateral reciprocatory motion and a series of alternate high and low riiiles extending laterally across the table parallel to the direction of motion thereof, lateral ridges on the table having oppositely sloping sides on the apices of Which ridges the high ritHes are located, said ridges decreasing in height toward the concentrates discharge side of the table and terminating short of said side, and lateral ridges extending from the terminates of the aforesaid ridges and having oppositely sloping sides, the slope of the sides of the first-mentioned ridges being more acute than the slope of the sides of the second-mentioned ridges, and means. for discharging Wash Water on the second-mentioned ridges.

8. A concentrating table having a lateral reciprocate@7 motion and a series of alternate high and loiv riiies extending laterally across the table parallel to the direction of motion thereof, lateral ridges on the table having oppositely sloping sides on the apices of which ridges the high rililes are located, said ridges decreasing in height toward the concentrates discharge side of the table and terminating short of said side, lateral ridges extending from the terminals of the aforesaid ridges and having oppositely sloping sides, means for discharging wash Water on the second-mentioned ridges, and inclines at the side of the table opposite to the concentrates discharge side from which inclines the first-mentioned ridges extend.

9. A concentrating table having a lateral reciprocatoni7 motion and a series of alternate high and low riil'les extending laterally across the table parallel to the direction of motion thereof, lateral ridges on the table having oppositely sloping sides on the apices of which ridges the high ritlles are located, said ridges decreasing in height toward the concentrates discharge side of the table and terminating' short of said side, lateral ridges extending from the terminals of the aforesaid ridges and having oppositely sloping sides, means for discharging Wash Water on the second-mentioned ridges, and riifies extending from the high riilies obliquely in the direction of the low rifiles and spaced therefrom.

10. A concentrating table having a lateral reciprocatori7 motion and a series of settling areas, lateral ridges defining said areas, said ridges having oppositelv sloping sides and decreasing-in Width and height toward the concentrates discharge side of the table and thence increasing in Width and terminating at said side, riffles on the apices of the ridges and extending' to the widened portions thereof, means for discharging Wash Water on the widened portions of the ridges, and riiiles in the settling areas parallel to the nist-mentioned riflies.

l1. A concentrating table having a lateral reciprocatorj7 motion and a series of settling areas, lateral ridges defining said areas and terminating at the concentrates discharge side of the table, said ridges having oppositeli7 sloping sides, riilles on the apices of the ridges and terminating short of the concentrates discharge side of the table, means for discharging Wash Water on the ridges adjacent to the aforesaid side of the table beyond the riffles, and riffies in the settling areas parallel to and co-eXtensive With the first-mentioned riiiles.

l2. A concentrating table having a lateral reciprocatory motion anda series of settling areas, lateral ridges defining said areas, said ridges having oppositely sloping sides, rifiies on the apices of the ridges and terminating short of the concentrates discharge side of the table, 'aised surfaces extending from the forward ends of the ridges to the concentrates discharge side of the table, and of greater Width than that of the ridges, said surfaces having sloping sides, and inea-ns for discharging Wash Water on said raised surfaces.

- 13. A concentrating table having a lateral reciprocatory motion and a series of settling areas, lateral ridges defining said areas, said ridges having oppositely sloping sides, riflies on the apices of the ridges and terminating short of the concentrates discharge side of the table, 'aised surfaces extending from the forward ends of the ridges to the concentrates discharge side of the table, and of greater Width than that of the ridges, said surfaces having sloping sides, means for discharging Wash Water on said raised surfaces, and riffles in the settling areas parallel to the first-mentioned riffles.

la. A concentrating table having a lateral reciprocatory motion and a series of settling Copies of this patent may be obtained for ve cents each, by addressing the Commissioner f Patents..

areas, lateral ridges defining said areas, said ridges having oppositely sloping sides, riffles on the apices of the ridges and terminating short of the concentrates discharge side of the table, raised surfaces beyond the for- Ward ends of the ridges, said surfaces having sloping sides, means. for discharging wash Water on said raised surfaces, and concentratesA discharge grooves between the raised surfaces.

15. A concentrating table having a lateral reciprocatory motion and a series of settling areas, lateral ridges defining said areas, said ridges having oppositely sloping sides, riffles on the apices of the ridges and terminating short of the concentrates discharge side of the table, raised surfaces beyond the forward ends of the ridges, said surfaces having sloping sides means for discharging wash Water on said raised surfaces, rifiies in the settling areas parallel to the firstmentioned riii'les, and riffles extending from the first-mentioned riffles obliqnely in the direction of the second-mentioned rifiies and spaced therefrom.

In testimony whereof I affix my signature in presence of tivo Witnesses.

MICHAEL J. MORL'EY.

Witnesses D. D. MOFFAT, C. H. STUDLEY, Jr.y

Washington, D. C.

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