US1988500A - Machine for concentrating ores and amalgamating gold ores - Google Patents

Description

Jan. 22, 1935 s w A 1,988,500

MACHINE FOR CONCENTRATING ORES AND AMALGAMATING GOLD ORES Filed Jan. 15, 1934 a |H 3? HM I 1 33 I 27 nv 25 V 11w" 3/ 1' l I 55 26 In a J I 25 30 7 22 3L k \g vll w ix ,5 \R Q k 1 l '1" 1 /9 m &

7 INVENTOR jqdney Walla/lad a M118. n ATTORNEYS Patented Jan. 22, 1935 MACHINE Fon commmmeoms m 1 fAMA GAM I NGGQI D ORES l Sydney a Waverley, ear sydflyix w uib W l a a Application "Jenn -r 1934} sfia 1 7 Australia Ap il 27,- 933 I; v-;.

-This invention relates to ore concentrating "machines; usable also as amalgamators for gold bearing ore, of the kind 'in which aslurry-orpulp of milled ore in water is causedv topass through 5 arotating vessel in which .itis subjected to centrifugal action in water in circulation through; such vessel, thereby to efiectseparation of light density material from heaivy densitymaterial, for elimination of the light-materialwin 'the'water flow and retentionof theheavy material in wthe ;:V6SS61. For; amalgamation, mercury ;is introduced while the machine is ,gincrotation and; heldspreadon the interior surface of the vessel by centrifugalaction; 'in-this caseythe amalgam isq-ultimately removed ;form the bowl with concentrates collectedtherein. a s

The machine which. theipresent-ainvention consists compriseslancouter vessel of steppedinverted conical; section, withqannu-lar :flanges of progressively increasing diameter; in stepped tor:- der around its interioriace; said outer vessel mounted for rotationon an axial shaftrl'disposed .,verti eally;- a "conical double walled vessel lwithin said outer vessel mountedior rotationson a lverttical shaft coaxiall-y with the; outer vessel; horizontal swing-blades carried ,by the interiorv yessel,, and operatinginjthe annuli-:-;-intermediate the annular :flanges on theinterior ifaceslofv. the ,walltof the-outer vessel; andymeans fonapplyin'g rotation at differentialispeedsto the respective vessels. The swing :bladesfi throw outward oby centrifugal; action and carve the ore" pulp in the annular spacesbetweenthe"flanges in. the router vessel and keep it agitated iand'iniaz' free flowing state: while the heaviest particles are separated by centrifugal actionzand deposited upon the wall or the outer vessel; The respective vessels are driven at diflerentialperipheral"ye .locities. r a

intothe wall space in ;the innerlvessel in a comitinuous stream which flows radiallyoutwardat the bottom of said vessel-intoan annular bottom space in the outer vessel. The pulp moves thence by eentritugal' actionill pwardly in the outer vessel against its wall, and in its course it is subjected to agitation by the carving action of the swing blades, whereby any lumps contained in it are broken and the pulp is kept in a lively flowing state; the heavier particles ,of mineral matter which were contained in the pulp are retained in the annuli between the flanges and the water borne tailings flow upwards over the flanges and ultimately pass out through vents in a rim flange at the top of the outer vessel. In

A ee fl w n Pulp ofrore'and waterispcured thecase of, use of themachine as an amalgae ;mator,;mercury-i=s introduced andspreadsover the wall of the outer vesselandisretained there until a large tonnageof pulp has been treated.

;';I he goldin the pulp contacts intimately with :5

the-mercury; and isamalgamatedtherewith. I A machineembodyingthe invention illus trated in vertical section in the accompanying -drawing. g

10 is a bed plate, and 11 and. 12 are bearings :10 or drive shafts which are bevel geared (1 3 -14) 'ito the centre-shaft 15 which carries the-inner V 15 which: carries the foot: of the sleeve shaft lfi.

Themechanical design of fthe"dl"i-VB arrangement :is subject tomo'diflcation and it does not in A iti- -sel t formpartiof theinvention." Theouter con- 22O centrator vessel 23' is of inverted truncated cone :shaperand it hasa re-entrant-,conica1 hub portion 24'. which projects upwardly within the cone -3 8' oi -theinner vessel 27Mand :isskeyed or other- "=Wise:;fixedi1;(22) tothe sleeve shaftxlfi; the sides :25 "of .the ou-ter vessel arestepped (25) :and annular'flanges 2,6aare formedonits innerface ,at the topvof eachstepping. These flanges (26);; are also stepped, thatis to say, their respective-diametral. -measurements are increased progres- 'sively according'totheir distance Irom the bottom tomthe top' oikthe vessels It is advantageous to provide intermediate shallow flanges 51 between :line x655) provided that the perforations ;50:.-are

'. not brought quite close to .the wall of the-vessel.

The inner vessel 27'is conical and has areentrant cone base 28; the top of which is: fixed to theit'op'wend oftheshaft 15'; this cone. forms 40 with the outer"-wall of said vessel. an annular passage through which the v pulpflows :into; the bottom .of the outer vessel 23; .7 1 s I The feed ot pulp passes (while the'machineis iri'ioperation) mdOWn through. ztheiannulus-about '45 the cone base 28 and flows radially outward at the foot of the annulus space 29 into the bottom of the outer vessel 23; thence it ascends in that vessel by reason of centrifugal action produced by the rotation of the outer vessel; practically none of it leaks through the discharge vents 43. 30 are swing beater blades hung freely on vertical pintle spindles 31 which are carried on the periphery of the inner conical vessel 2'7; the blades 30 are located intermediate the flanges 26 v and operate to slash and agitate material which tends to congregate between these flanges and thereby maintain the portions of it which can be water borne in a flowing agitated condition so that they will pass upwardly in the water scour.

43 are vents for releasing the saved concengal separation while it is maintained in agitated condition.

3.-An ore separating machine as claimed in claim 2 wherein the radially disposed members carried on the inner vessel extend into the annuli between the annular flanges on the inner surface of the outer vessel-.without touching any partfof'thelouter vesselfln' a 4. An ore separating machine comprising an trates; they remain permanently open. Wheni jinverted truncated conical vessel with internal the machine becomes charged up with cencen trates, it is stopped; the"concentrates-.1andyorz amalgam) sluice out through thesevents by gravity when the speed is SllfiClGlltIYf-IjQdUCBd. Any

The drive is arranged to effect rotatio of the" respective vessels at different speeds iandtthQf;

speeds are regulated appropriately to the nature 'of the'ore'and the densitynf th'epulp to' effect the; desired degreeof separation of {the lighter from the heavier cdnstituents'of the crew In'the cas e'of a machinein-which the rim diameter'of the outer vessel is about 30-inches, operating on wash dirt containing fine gold, the outer vessel is fro'tatedatab6ut= 250 revolutions per minute and the inner coneiwhich carries the j agitator blades 30 is'rotated at about 320 revolutions per minsecure by Lett'ers Pate'ntisz 1; An ore separating" machine comprisinga vertical outer inverted c'onical vessel with annular internal flanges on itswall and discharge vents in the bottom of it, saidfl'angesuof progressively increasing diameters in ascending order, an;inner-erect conical vessel concentrically mounted within said outer vessel. and-communieating therewith at thefoot' of it; means" for applying rotation about a common vertical axis: at differential "speeds to said vessels, and: s'wing blades l-iung on pintles carried on said inneraves- Sel at; positions intermediate the"flanges on the 'inner' sidefof' the outer vessels 1 2; An ore separating -machinecomprisingya vertical inverted truncated conical vessel; with annular internal flanges'of progressively increasing diameter in ascending'order,wa-:concentrate adapted to throw outward by centrifugal action and slash and agitatelpulpyascending in said'outer vessel, and means for rotating sa'id'inner'vesannular flanges in stepped order on its innerv {said :ves'seL 'a' conical member concentrically disreslduum sticking 1n the vessel may be washed out. 1

posed-in said vessel, passageways in said member ,;adapted ,for passing pulp therethrough into the .b'ottomofgsaid' vessel, swing blades carried on wsaid member adapted to subdivide and agitate pulpasceiiding in said vessel, and means for rotatingsaidvessel and said member at diiferent peripheral. velocities; thereby to subject ,the pulp .to centrifugal, separationwhile maintaining it in an agitated condition.

5'. An; ore separating machine comprising a vertically disposed hollow vessel of truncated conical shape having internal annular flanges 'instepped' diameters on its wall at spaced intervals} a rim lipon its open top end and dischargeuvents in the'bottom of it, are-entrant cone :hub on the bottom of said vessel; carrying it} on an axial shaft," a conical interior vessel lwith 'open top and'witha re-entrant hub on the bottom' of it fixed to a vertical shaft concentric with the aforesaid shaft,.passageways from' the foot of the-annulus between said interior vessel and its hub adapted for passing pulp from the interior-of saidvesselinto the foot of said outer .vessel, vertical spindles carried on' the exterior side of said conical interior vessel, swing blades on said spindles positioned tolocate in the-spacexterior inverted conical vessel with annular internal flanges at spaced i'ntervals on its wall, asaid flanges .ofxprogressively increasing diameter inia'scending order, an inward flange on its rim,

discharge vents inthe'bottom'of it, an interior I erect conical". annular vessel disposed concentrilcally' within said exterior vessel, an annular passage Lbetweerithe foot of said inner vessel and the bottomof said outer vessel, swinging members carried on the external part of the inner vesseL-said members spaced to locate in the annuliin the outer vessel intermediate the annular internal T'flanges therein" without touching, the outer vessel, and adapted by reason of differenitial speedsof rotation of the vessels to slice and agitate pulp which is in'flowing progression upwardlyinsaid'outer vessel, and means for'applying rotation at differential speeds to' said vessels. Z1

'SY EY AL'rER-L CK,

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