US2325340A - Ore concentrator - Google Patents

Description

July 27, 1943. E. o. OBERDICK ORE CONCENTRATOR Filed Nov. 18, 1941 3 Sheets-Sheet 2 INVENTOR rV n 0. Oberd BY WW ATTORNEY July 27, 1943. E. o. OBERDICK ORE CONCENTRATOR Filed Nov. 18, 1941 3 Sheets-Sheet 25 INVENTOR Erv'n O Oberdiclr BY ATTORNEY Patentedl uly 27, 1943 F onEcoNoENraAToa I p EIvinQberdickZ Qlevela nd; Qli O; ri ia wl t0. 7

, Qlev land Tungs en, i a corpora i n of. Ohio;

AppiieationNovemben 18, 1941', Seria l N0.' 419578 :This invention relates to oreconcentrators and more particularly to improvednieansior shaking or imparting a vibratory movement to the table or deck of such concentrators; The invention also relates to "improved means for applying;

dressingwater tothe table or deck and to means for adjusting the table toprovide the proper transverse inclination. v I I 1 Ore concentrators which have heretofore been devised for separating mineral from gangue have,

been provided with complicated means for shakor jerking the table, such astoggle mechanism 'eccentrics, or thelike which not only must be accurately adjusted-but which Inaterially increase the cost ofthe' table.

' It is the aim ofthe present'invention to provide an .improved concentrator of this type which is. simple in construction, easily adjustable, effective in operatidmandthe table or deck of which may be vibrated in a simple manner.

Another object of'the'inven'tion is to provide improved means forimparting head motion to the table for moving the mineral along rim'es extending longitudinally upon the. deck;

A further object is to provide improved means for adjusting'thetransverse inclination of the table.*

A 'stilliurther object i s toprovidemimproved means'ior regulating the quantity ofjdres'sing water'for washingthe ganguefrom the mineral the inclination of the deck;

Fig. 4 'is, a diagrammaticalview of the table with parts in section,ythe movable parts being in aposition different from that shown in Fig, 2;

Fig. 5 is an end viewofthe table as seen from a'plane n themes-5 of Fig. 3, lookingfin the direction of the arrows;

Fig. 9'is a cross sectionalview on the line 9-4- Fig-. Iowa-fragmentary sectional view on the As illustrated in'the drawings, the improved concentratorcomprises a deckor table i provided witha-plurality of riiiles 2, a feedtrough 3 and a Water dressingtroug-h 4 supported above the deck, a frame for supporting the deck, and means for-impartinga vibrating or oscillating movement to the deck toseparate the mineral constituents "Fig. 6 is a cross sectionalview on the line 6-6 of Fig. 3; v

Fig. 7 is a fragmentary plan View as seen from a planepa ssing through the line 'l-l of Fig. 3 with the movable gates in a partially open position; I Fig. 8 is across section'alview on the line B8 of Fig.2; ,1

ofthbre from the garig ue duringthetreating operation. i

whnem deck maybe supported by any desirable'mea-ns and may be of any suitable size and I do notdesire to be limited to the particular arrangement shown, as illustrated in the draw ings, a 'frame is provided having lower beams-=-5" and 6' connected together by crossbars 1,8 8, l6 and II, and a pair of-upper beams l2 and I3 secured together by cross bars-l4, 15, I6, I"! and i8 "which serve to supportsuperimposed cross bars 9 -20,"2 and 22, each of which hinged atone end to-beam' i2 asindic-atedby the numeroals 2-3 andt-he other-end of each'of which is sup- ,p'ortedonincl-ined plane 23a-of a depression or notch formed in a slide -24 the slide being mow able longitudinal-1y upon beam 13 between guide pins 25 and being provided at one end withfa recess 24a."

' For providing a surface on which the ore may be treated, a plurality of spaced longitudinally extending beams indicated by the numerals 15a 26, 21 and Ry-support the bottom 29 of the deck over which is superimpos'ed'a cover 30 which is preferably formed of linoleum or other suitable -r' naterial, such as rubber. As illustrated,; central beams 28 and 21 rest upon and outer'beams 25' and Z8- are'embedd-ed in cross bars Hi to -2 2-, mm sive, to prevent transverse movement of the deck. The riflles 2* are of usual arrangement and are formed by tacking'wooden strips-upon the linoleum, or by orminggrooves in the cover if a material, such as rubber, is utilized, and are pref-- erabl'y inclined from the forward to the concentrate discharge endof the table and terminate in a substantially feather-like edge along the In utilizing the table for separating the mineral constituents from theore, ore pulp is supplied to the feed trough and part i thereof flows thr'oughan openingflfia in the lower pore tion ofa partition 3| into a supplementary feed trough aa and the 'pulp flow-s from both troughs through openings 32 provided in the side of the 34 to regulate the flow of pulp as shown more clearly in Fig. 3.

For imparting horizontal movement to the mineral constituents which separate from the gangue and settle in the riffles, the table is inclined downwardly in a longitudinal direction from the breast board 34a to the mineral concentrate end and is supported in such a manner that it may be vibrated or agitated. For this purpose a plurality of spaced flexible members, such as slats provided which are secured at their lower ends H to cross pieces 8 and [0, respectively, substan-.

tially centrally thereof and are braced against I p 2,325,340 trough adjacent the head or splash board 33 on to the surface of the deck. If desired the openings 32 may be provided with adjustable covers 58 connected to the pulley by suitable means, such as a belt, the table is vibrated in opposite directions'against the action of compressed springs 43 and Means are also provided to vary the transverse inclination of the deck to compensate for variation in feed so that the line of separation of the concentrate can be held coincident with the tip ends of the rifiles and for this purpose an angle iron "580/ secured to beam !3 and'isprovided with an apertured lug 59 to receive a screw 59a provided with a crank 5%. Screw 59a also extends through a threaded collar 590 secured to a strip 59d which in turn is secured to slide 24,

l and thus when crank 58a is turned in one direction, the slide is moved rearwardly to raise cross pieces l9 to 22, thereby increasing the inclination of the deck and when the crank is operated in I the opposite direction slide 24 is moved forwardly,

- thereby decreasing the inclination of the deck.

movement by means of a beam extending between andembedded in recesses formed in the standards, a tie rod 4|, and side-braces '42 and 43,-,the side braces having their lower ends secured tocrossPiece 9 and their upper ends to standards 38 and 39, respectively.

As illustrated more particularly Figs. 2 and 4, means are provided to limit themovement of r the table in opposite directions and to regulate its movement in accordance with the movement of ,,the actuating mechanism. For this purpose, standard 39 is'provided with recess 44 to receive cross bar; H which limits the movement of the table; in one direction and standard 381s pr vided with a recess 45 on-its pposite side for.

receiving cross bar lilwhich limits the movement of the table .inthe opposite direction. To regulate the movement of the table,; a rod 46 6X?- tending-through aperturesin standard 39-. and crcsspiece I1 is provided with a ,nut 47 and a spring 48 is compressed between the' nut and cross piece I! and in a like manner arod 49 ex.-

tending through apertures in standard 3 8 and cross piece leis provided with a nut 5c and a spring 5 l is interposed betweenthenut and cross piece -15.

The shaking or vibrating movement of the table iseffected by'meansofone or more movable weights associated with the table, the effect of which vary in accordance with the. position of the weights with respect to the table and while applicant does not desire to be limited 'to any particular arrangement, mec hanis1ri.is,sh0wn in the accompanying drawings which is simple-in Y iorm,-efiective in operation, and which may be rovidedata comparatively lowcost. As illu s trated, a pulleyfi? provided; with eccentrically mounted weights53 is rotatably mounted upon a' shaft 54 and prevented from end wise movement by collars 54a. The opposite ends of shaft 54 fit in recesses in beams I2 and I3 and aresecured thereto by means of U-bolts 55-and 56 as shown more particularly in Figs. 1 and 8. .1

. Pulley52 may be of anydesired form and the weightsmay be applied thereto in any desired manner. For instance, the pulley maybe provided with pockets in which weights formed of a suitable metal may be cast or in which the weights may be inserted and retained by suitable covers. As. illustrated, weights 53 are bolted to the web of the pulley as indicated at 51 and durmeans are provided toregulate the amount of dressing water supplied to the deck. For this -purpose, a plurality of juxtaposed adjustable gates 63 having recesses 6| at their upper ends are provided at thatside of a 'water dressing trough 62 which is "in nearest proximity to headboard 33, the gates being 'yieldingly held to the bottom of the trough'byrods having a head 64 extending above the bottom of the recess and a spring 65 compressed between the bottom of the recess and the head.' Any one or more of these gates-may thus be'opened to any desired extent to provide. the requisite quantity of dressing water.

The'operation of my improved table will now be apparent. Thejdeckfof "theitablel'i's first adiusted to provide'theproper inclination and ore pulp is fed to the trough '3, a portion of which passes through openings 30o into trough 3a, and is fed from both troughs through openings 32 on to the deck of the table. As the pulp passes over the rifiies, the mineral constituent and a portion of the gangue settle in the grooves between the riiiie's'and the remainder of ,the gangue is carried over the rifiles and is discharged along the tail mgs side as indicated by the numeral ts. The mineral constituent. of the ore is moved longitudinally of thedeck by the vibrating movement of the deck and as it' passes forwardly, water which is supplied to troug h 61 passes through an opening 68 me. partition 69 into trough 62 and is fed to the deck throughadjus'table gates washing the gangue from the'ore as it passes between and beyond the riifies, the water and gangue being discharged at the tailings sideoi the table and the mineral constituents being finally dischar ed at the concentrate end into a suitable trough 10.

The action of the weights in causing vibration of the table is clearly indicated in Figs. 2 and 4. Assuming that the parts are in the position indicated in F-ig, 2 with slats 35 in vertical position, cross pieces 'I 5 and H spaced from recesses 45 and and 44 in standards 38 and 39, respectively, springs 48 and 58 compressed and weightsIEB in a neutral position, when pulley 52 ,is rotated in a clockwise direction as indicated by the arrow, slats 35.wi l1, be flexed from their vertical dotted line position as shown in Fig. 4 to the full line position and cross pieces 15 and I"! will be moved to the left until cross piece I! enters recess 44 and engages standard 39. During this movement spring 51% is further' compressed andthe compressicn upon spring 48 is partially released; As pulley :2 is rotated further in the direction of the arrow, the effect of Weights 53 graduallydecrease and :co=rnpressed spring 5! now being stronger than spring 43 gradually returns the parts to their original position as the Weights approachand finally reach a position opposite to that shown in Fig. 2. Upon further movement of the pulley in the same direction, the weights will approach and finally reach aposition opposite to that shown in Fig. 4 at which time the slats in turn will be flexed in a direction'opposite to that shown in Fig. 4-, cross piece l5 will enter recess 45 and engage standard 38, the compression upon spring la will be increased and the"compression upon spring 5 I will be partiallyreleas'ed, the-parts assuming the position shown in Fig. 2 when the pulley is finally returned to its original position. While pulley 52 may be operated at any desired speed, it has been found that best results are obtained when it is rotated at a speed of approximately 100 to 200 revolutions per minute with weights varying from to pounds when porting said table including an upper frame movable in opposite directions from a neutral position and a lower frame, each frame including a pair of longitudinally extending beams and a plurality of spaced cross bars interposed between and secured to the beams for maintaining them in spaced relation, at least some of the cross bars in the upper frame being parallel to some of the cross bars in the lower frame when the upper frame is in neutral position, and flexible slats secured to parallel cross bars in the upper and lower frames at a plurality of points along said frames for yieldingly supporting the upper frame, said slats being vertically disposed when the uppper frame is in neutral position, a pair of spaced standards, each of which is secured at its lower end to one of the cross bars in the lower frame and has an upper end adjacent to but spaced from an associated parallel cross bar in the upper frame when the upper frame is ina neutral position resilient means for normally maintaining each associated upper cross barin spaced relation to its respective standard when the upper frame is in neutral position, and movable means associated withthe upper frame for alternately forcing the cross bar adjacent each standard into engagement with its respective standard against the force of said resilient means.

2. In an ore concentrator, a longitudinally and transversely inclined table having longitudinally extending riiiles on its upper surface for receiving the mineral constituents of ore pulp, means for passing water over the rifiles, means for supthe upper frameisin neutral position, and flexible slats secured to upper and lower parallel cross bars at a plurality ofpoints along said frame Whichare vertically-disposed when the upper frame'is'in neutral position, a'pair of spaced standards, one of which 'hasits lower end secured to'one of said lower cross bars and a recessed upper end with it recess spaced from but arranged adjacent to and facing a parallel upper cross bar and the other having its lower end secured to the opposite side of a secondlower cross bar and a recessed upper end with its recess facing the recess'in the other standard and being arranged adjacent to and facing but spaced from an upper cross bar parallel to the second lower cross bar when the upper frame isin a neutral position, resilient means associated with each standard which has the tehdency to'f'orce the cross bar into the recess of its associated standard against the opposing force of the other resilient means, and movable means associated with the upper frame for alternately forcing the cross bar adjacent each standard into the recess of its associated standard against the force of the resilient means associated with the other standard and its associated cross bar;

3. In an ore concentrator, a longitudinally and transversely inclined table having longitudinally extending rifiles on its upper surface for receiving the mineral constituent of or pulp, means for passing water over the riflles, means for supporting said table including an upper frame movable in opposite directions from a neutral position and a lower frame, each frame including a pair of longitudinally extending beams and a plurality of spaced cross bars interposed between and secured to the beams for maintaining them in spaced relation, the cross bars in the upper frame being parallel to the cross bars in the lower frame when the upper frame is in neutral position, a plurality of flexible slats affixed to upper and lower parallel cross bars at opposite ends and centrally thereof, the flexible slats at one end of said frame being ailixed to the parallel upper and lower cross bars at a side opposite to that at which the flexible slats are affixed to the corresponding upper and lower parallel cross bars at the opposite end of said frame, a pair of spaced standards, one of which has its lower end secured to one of said lower cross bars and a recessed upper end with its recess spaced from but arranged adjacent to and facing an associated parallel upper cross bar and. the other having its lower end secured to the opposite side of a second lower cross bar and a recessed upper end with its recess facing the recess in the other standard and being arranged adjacent to and facing but spaced from an upper associated cross bar parallel to the second lower cross bar when the upper frame is in a neutral position, resilient means associated with each standard and the cross bar adjacent thereto for normally maintaining each associated cross bar in spaced relation to the recess in itsassociated standard when the slats are in a vertically disposed position, and movable means associated with the upper frame for flexing said slatsin 0pposite directions from their vertical position and alternately forcing the cross bars adjacent each standard into the recess of its associated standard against the force of the resilient means associated with the other cross bar.

4. In an ore concentrator, a longitudinally and transversely inclined table having longitudinally extending rifiles on its upper surface for receiving the mineral constituents of ore pulp, means for passing water over the riflies, means for support.- ing said table including an upper frame movable in opposite directions from a neutral position and a lower frame, each frame including i av pair of longitudinally extending beams and a plurality of spaced cross bars interposed between and secured thereto for maintaining the beams in spacedrela tion, the cross bars in the upper framebeing parallel to the cross bars in the lower frame when the upper frame is in a neutral position, -a plurality of flexible slats amxed to upper and lower parallel cross bars at a plurality of points along said frame which slats are Vertically disposed when the upper frame is in neutral position a pair of spaced standards, each of which is positioned substantially the same distance from the opposite ends of the beams and eachof which has a lower portion secured to a lower cross bar and an upper recessed end which is adjacent to and facing but spaced from an upper parallel cross bar when the upper frame is in neutral position, means for bracing said standards to each other and to the lower frame, said standards being secured to the opposite sides of the respective lower bars and the recesses in the upper ends being faced toward each other, resilient means associated with each standard and its adjacent upper cross bar for maintaining each of the upper cross bars in spaced relation to the recess in its associated standard when the upper frame i in neutral position, and movable means associated with the upper frame for flexing said slats in opposite directions from their .vertical position to alternately force the upper cross bar adjacent each standard into the recess of its associated standard against the force of the r silient means associated with the other standard.

ERVIN O. OBERDICK.

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