US902018A - Ore-concentrator. - Google Patents

Description

H. 11. & LSULMAN.

on GONCENTRATOR'. APPLICATION. FILED JULY 31, 1906.

Patented Oct. 27, 1908.

UN TED PAT ioF-Flfl J N VINGsToNE sULM'AN 'A ND, IEvAN AsraAY-sULMANQ OF LONDON, .EN GLAN'Dfi vention comprises a fixed surface over which i I are fed, and means for alternately exposing.-

"the ore to the air and to the edge oft .To all whom it may concern:

Be *it known that we, HENRY Liv-rues STONE SULM 'N and EVAN AsPnAY-SULMAN, subjects of the King of England, residin at don," Ide r which receiveslthe' material discharged ASSIGNORS To MI ERA S:snrAnArroniLIMITEn'oF,LoNnonnNeLANn.

' onn-concnnrnnron.

London, England, 1 and Highgate, Lon

England, respectively, have invented a 'cers taln new and. useful Ore-Concentrator," of

launder carrying thefloating material.

which the following is a spetzidc'ationi- This invention relates to improvements in ore concentratora'the objectbeing to rovide suitable means fors'eparating' metal ifer'ous'j particles from gangueor'from one another.

Hitherto it has been proposedlto separate mineral particles which are immersed. lnlid uid by] causing the particles tobe exposed tothe air'and thereafter to ,meet the edge or su'rface of liquid, whereby certain particles float and are separated from the remainder.

apparatus previously suggested,- the.

In the.

powders orewascarried' on' some form of moving surface, such as a vanning 1 table or c'onveyer, I g I An ore concentrator accordlng to this 111- the powdered ore and a thin layer ofliquid e liq-- uid whereby certain particles are caused to float, and are separated from the remainder.

'The apparatus may consist of a fixed inelined surfaceover which powdered ore. will 7 .not flow, 'means. for distributing a thin stream of liquid over the surface,- means for supplying powdered" ore. 'to'the surface, a. movable body having a flexible edge in con-" tact withthe surface, means for sweeping the body over the surface toremove the a er of liquid temporarily from the ore and a so'to feed the oreove'r the surface and'means for collecting the floating and immersed materials which are discharged from the surface.

In a preferred form of the apparatus the surface on whichseparation takes lace is a fiat conical buddle having asmoot surface, convenientl ofrubber; A vertical shaft is rotated at t e-center of the buddle and a recepta'cle for powdered ore is carried on the shaft and .a conduit from said receptaclefeeds the powdered ore on to the buddle. Perforated liquid-distributing pipes radiate from the shaft; liquid is su' plied to the pipes by any suitable means am a thin stream of liquidis thus produced over thehuddle,

Arms radiating from the shaft, and preferably in the form of volutes, have rubber Specification ot'rietters Patent Application med iuiy '31, 1905. seria1'No.. a2s;55i.

-ti-ve view, partly in section, of one form. of "app m dying this invention.

f'bu'ddle may conveniently be covered with india' rubber, WOOCl, or other smooth mate the centerof thebuddle, is supported in suit- 4 fatented bet, 27,,108.

=fro'n 1 itssurfa'ce and a second launder is air-- ranged'to receive the overflow from the first The accompanying draw ng is a perspec-.

. A conical buddle A is inclined at a small arr-file, say one in twenty, such that theme not flow overit of its own accordv and the rial;

A rotatable vertical shaftB passes through able be'aringsB and is driven by suitable 'gearB A receptacle C for the ore' may be' carried on the shaft, and conduits C convey the ore from the. rece tacle C on to the bud-' die A. Liquid-distr buting pipes D, which may; be straight or curved, radiate from the shaftvB'. Li uid such as acidified water is supplied to; tese pipes througha suitable conduit D and the pipes are perforated, as at D so 'as to-distribute a thin layer ofliquid over the huddle. Arms E, preferably in the formof'volutes, radiate from the shaft B and have flexible, edges or-squeegees E incontactiwith the surface of the huddle. By

fsquee'gee we mean a flexible edge such asrubberswhich isc'apable while being moved 'over a slightly uneven surface of adapting itself to that surface and of removing water therefrom. The 'eriphery of the buddle dips into an annu ar launder F into whic'h the solid particles which remain on the surnearvthe center and is 5 read out over the 105;,

surface of the buddle by t 1e rotating arms E. 'The distributing pipes D cause a thin layer of Y liquid'to flow over the surface of the huddle towards its periphery. As the arms E, car

rying the squeegees E of india rubber or 110 face of the buddleare discharged. A second other flexible material, pass over the surface of the buddle, the so (1 matter is partly pushed forward'by'the arms and therefore caused to pass towards the circumference of the huddle, and at the same time the squeegees pass over the articles,-temporarily removing the liquid t erefrom,-so that the particles are exposed ,to the-air. The layer of liquid from the'distributers D then passesv over the surface again and, as the oncoming film'of liquid meets the particles, certain of these are caused to float and remain floating on the iiid after it has assed over the huddle. fhe material-wine remains on the surface of the-huddle gradually fedoutwards-and sinks into the launder F atithe peripliery, :While the particleswhich float .on

' of'liquid 'over the siirface, a movable body on the surface to remove the film of water liquid temporarily from the ore and also to havin a flexible sqilieegee edge in contact with t e surface su 'ciently flexible to pass over the ore while exerting sufficient pressure therefrom, means for sweeping the body over the surface in a direction at right angles to the direction of flow of the water to cause the ore to be alternately exposed to the air and to the edge of the liquid.

2. In an apparatus for concentrating ores thecombination'of a fixed inclined surface over which powdered ore will not flow,

means for continuously distributing a thin stream of liquid over the surface, means for supplying powdered ore to' the surface, a movable body having a flexible squeegee edge in contact with the surface suflicientl'y flexible to pass over the ore while exerting sufficient pressure on the surface to remove the film of water therefrom, -means .for sweeping the body over the surface in a direction at right angles to the direction of flow of .the water to remove the layer of feed the ore over the surface.

3. In an apparatus for'concentrating ores the combination of a fixed inclined surface over which powdered ore will not flow,

.means for continuously distributing a thin stream of liquid over the surface, means for suppl ing powdered ore to the surface, a movable body having a flexlble squeegee edge in contact wlth the surface sufficiently form, butit is to be understood flexible-to pass over the ore while exerting suflicient pressure on the surface to remove the film of water therefrom, means for sweep ing the bodyover the surface in a direction atright' angles to the direction of flow of the water to remove the layer of liquid temporarily' from'the ore and also to feed the ore over the surface, means for collect-ing the floating material from the surface, and means foricollocting the discharged material which does not float. a

4, lnflan apparatus for concentrating ores the combinat on with a fixed inclined. surface over which powdered ore anda thin layer of liquid are continuously feed of' a squeegee sufficientlyflexible to pass over the ore while exerting sufficient pressure on the-surface to remove the film of water therefrom whlch 1s swept 'over the surface intermittently in a direction at right angles to the direction of flow of the water to remove the layer of liquid from the ore, whereby the oreis alternately exposed tothe air and to the advancing edge of the layer 'of liquid.

p 5. In an ore concentrator the combination of a fixed conical surface of wide angle at the apex, means for continuously distributing a thin stream of liquid over the surface, means for su lying powdered ore to the surface, a mova e arm having a flexible squeegee edge in contact with the surface sufficiently flexible to pass over the ore while exerting sufficient pressure on the surface to remove the film of water therefrom, means for sweeping the arm over the surface in a direction at right angles'tothe direction of flow of the water to remove the layer of liquid temporarily from the ore and to feed the ore over the surface, means for collecting the floating material from the surface and means for collecting the discharged material which. does not float.

6. In an ore concentrator the combination of a fixed conical surface of wide angle at the apex, a rotatable vertical shaft at the center thereof, means for rotating the shaft, means for su plying powdered ore on to the buddle, a pe orated l1quid-distributing pipe radiating from the shaft, and means for supplying liquid continuously thereto to produce a thin stream of liquid over the huddle, arms radiating from the shaft, flexible squeegee edges on the arms sufficiently flexible to pass over the ore while vexerting sufficient pressure on the surface to remove the film of water therefrom in contact with the surface to remove the layer of liquid temporarily from the ore and to feed the ore over the buddle, means for collecting the floating material discharged from the huddle and means for collecting the dischargedmaterial which does not float.

7 In an ore concentrator the combination of a fixed conical surface of wide angle at the apex, a rotatable vertical shaft at the center thereof, means for rotat ng the shaft, a receptacle for, powdered ore carried on the uously thereto to produce a tlun'stream of liquid over the huddle, volute arms radiating from the shaft, flexible squeegee edges on the arms sufficiently flexible to pass over the ore while exerting sufiicient pressure on the surface to remove the'fllm of water therefrom in contact with the surface to remove the layer of liquid temporarily from the ore and to feed the ore over the huddle, means for collecting the floating material discharged from the huddle and means for collecting the discharged material which doesnot float.

8. ln an ore concentrator the combination of a fixed conical surface of wide angleat the a ex, a rotatable vertical shaft at the center t ereof, means for rotating the shaft, -a receptacle for powdered, ore carried on the shaft, a conduit from said rece tacle to feed powdered ore on to the budd e, perforated liquid-distributing pipes radiating from the shaft, andmeans for supplying liquid continuously thereto to produce a thin stream of liquid over the huddle, volute arms radiating from the shaft, flexible squeegee edges on the arms sufficiently flexible to pass over the ore while exerting sufficient pressure on the surface to remove the film of water therefrom in contact with thesurface toremove the layer of liquid temporarily from the ore and to feed the ore over the huddle, a first launder at the periphery of the huddle to receive the material discharged from its surface, and a second launder arranged to receive the overflow carrying the floatirigmaterial' 9. In an ore concentrator the combination of a fixed conical surface of wide angle at the apex and covered with rubber, a rotatable vertical shaft atthe center, means for rotat ing the shaft, a receptacle for powdered ore carried on-the shaft, a conduit from said receptacle to feed the huddle, perforated liquid-distributing pipes radiating from the shaft and means for supiplying liquid continuously thereto to pro duce a thin stream of liquid over the huddle, volute arms radiating from the shaft, rubber s ueegee edges on the arms sufliciently flexible to passover the ore while exerting sufficient ressure on theisurface to remove the film of water therefrom in contact withthe surface to remove the layer of liquid tempo- 'rarily from the ore and to feed the ore over the huddle, a first launder at the periphery of the huddle to receive the material discharged from its surface and a second launder arranged to receive the overflow from the first launder carrying floating material.

In testimony whereof We have signed our names to this specification in the presence of two subscribing witnesses.

HENRY LIVINGSTONE'SU'LMAN EVAN ASPRAY SULMAN.

Vitnesses:

ALBERT OWEN WILLIAMS, VViLLIAM H. BALLANTYNE.

owdered ore on to the

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