US914002A - Apparatus for treating ore. - Google Patents

Description

F. E. WOODBURY, B. HARRIS & G. H. BENEDICT. APPARATUS FOR TREATING ORE.

APPLICATION FILED APE.2, 1902 914,002, Patented Mar. 2, 1909.

2 SHEETS-SHEET l.

F. E. WOODBURY, B. HARRIS & G. H. BENEDICT.

APPARATUS FOR TREATING ORB.

APPLICATION FILED APR. 2, 1902.

Patented Mar. 2, 1909.

2 SHEBTSSHEET 2 gvumiya 1 77 M ZM/i .Z w w M n m 5 WWW FREDERICK E. WOODBURY,

'lO SAID WOODBURY AND BENEDICT.

OF MILWAUKEE, WISCONSIN, CENTENNIAL HARRY BENEDICT, OF LAKE LINDEN,

AND BENJAMIN HARRIS AND HUHIUAN; SAID IlARIllS ASSIGNOR APPARATUS FOR TREATING ORE.

Specification of Letters Patent.

Patented March 2, 1909.

Application filed. April 2, 1902. Serial No. 101,111.

To all whom it may concern:

Be it known that we, FREDERICK E. Woon- BURY, of the city and countv of Milwaukee and State of Wisconsin, and BENJAMIN HA1:-

6 R18 and (IENIENNIAL HARRY BENEDICT, of Lake Linden, in the county of Houghton and State of Michigan, citizens of the United States, have iny ented certain new and useful Improvements in Apparatus for Treating 10 Ore, of which the following is a specification, reference being had to the accompanying drawing, forming a )art thereof.

Our. invention relates to concentrating plants or apparatus for the treatment of ores or metal bearing rock. Its main objects are to effect a more complete preliminary classification and separation of the concentrates and slimes from the ravel and sand or material requiring furtier treatment, as the ulp or crushed ore or rock is discharged om the stamp or crusher; to obtain directly and immediately from the pulp as it comes from the crusherone or more finished products .or grades of concentrates ready for smelting to reduce the volume of material requiring further treatment, after such preliminary classification and separation is made; to economize in apparatus required for such further treatment and thereby cffeet a material saving of water, labor, time and space; to avoid dilution and consequent loss of slimes; and generally to improve the construction and operation and to increase the eliiciency of apmratus for the )reliminary classification of ores and metal caring rock.

It consists in certain novel features in the construction andarrangement of parts and in the combinations of parts hereinafter particularly described and pointed out in the claims.

In theaccompanyingdrawings like letters designate the same parts in the several figures.

Figure 1 is a vertical longitudinal section of an orc classifier and separator embodying an essential part of our invention Fig. 2 is a plan view of the same partially broken away; Fig. 3 is a diagram or plan view on a reduced scale showing the classifier and separator as connected with and arranged in relation to a stampipill or ore crusher andv concentrating jigs to which a portion of the material is delivered for further treatment; and Fig. 4 is a vertical cross section on an nlargcd scale of the upper part of the classifier and separator. With apparatus heretofore generally used for treating ore of the kind to which this invention is particulartv adapted, the ore as it comes from the crusher is first divided into a number of equal and similar parts. Each of these parts is then subjected a number of times to the action of upward currents of water, the heavier particles in each classification falling through the upward current and being delivered to jigs for further treatment, and the lighter part iclcs' or slimes being finally carried over the tail of the last scpa rator. It is evident that in such a system a large amount of water is required, and that most of this water is added to and dilutes the slimes. This necessitates lnrgcsettling boxes with overflows, and results in great loss of fine mineral portions, before they are in proper condition for treatment by the apparatus usually employed for recovering slimes.

With the apparatus herein shown and described the slnnes are taken off with little or no dilution, and the greater part of the concentrates are removed from the pulp as it comes from the crusher by the prelimimu-y classification. One or more finished pr od ucts or grades of concentrates in condition for smelting are separated and removed from the sand, gravel or jigging material requiring further treatment. The slimcs being separated and conducted off in this preliminary classification are not diluted by the addition of water required to grade or classify the pulp according to the old method and by the further addition of water to that part of the pulp or to the jiggin maf crial which requires further treatment. lhis is of prime importance, because the addition of water necessitates extra apparatus such as settling tanks,

employed in connection with the usual hydraulic separators to remove the sur )lUS water from the slimcs preparatory to their concentration on slime tables, and the sep aration of this surplus water carries oil as waste a large part. of the fine, almost impalpable particles of which the shines are composed, thus entailing more or less less, according to the volume of addit ional water. Hence a material saving in slimes, a reduction of apparatus required for further treatment, and a consequent saving of water flld of labor required forthe operation ofsuch apparatus designed to separate and remove from the pulp two grades of rich, heavy concentrates,--

a fine grade or hutch work, which passesthrough the screen, and a coarser grade taken from the lower part of the jigging bed on the screen,and to separate from the sand and gravel requiring further treatment, slimes with a comparatively small volume of water from which they can be readily recovered with little loss.

Referring now to the drawing, dis a horizontally disposed screen arranged over a hutch I) having an inclined bottom and one or more discharge openings 0, and a water supply; opening (1. At one end of the screen the hutch communicates with a plunger compartment e, which extends above the screen and is provided with a reciprocating plunger f looselylitted therein. The plunger fis provided with rods g extending upwardly through the top plate It and vent tubes 11.

* The plunger rods gare connected with cranks,

eccentrics or other means, not shown, for imparting a reciprocating movement to the plunger.

7' is a vertically adjustable shield, which may be conveniently made of sheet metal bent into'suitable form. It secured by bolts 70 to a flanged plate Z, attached to the tail plate m. The interior of said shield communicates through a horizontal slot or opening a in the plates Z and m with a spout 0, by which a part of the material passing underneath the shield is conducted therefrom for further treatment. The opening a is provided with a vertically adjustable gate or valve p, for regulating the flow of water carrying the sand and gravel from the interior of shield 7'. It may be adjusted and secured in place by means of a bolt Q passing through the plate Z and a slotted upward extension of said gate. 7* is another vertically adjustable shield arranged within the shield and extending below 'it. It may be conveniently suipported by means of slotted straps s, secure )y bolts tto a cross bar a.

e is a rubber hose or flexible pi e leading from the interior of the shield 1 an vertically adjustable within said shield. It may be conveniently supported at its inlet end within the shield by a vertically adjustable rod 10,

secured by a bolt and thumb nut :12, to the cross bar a.

y is a box or compartment extending across the tail end of the machine and having an opening 2 at one or each end for conducting off the tailings which overflow the tail plate m.

Referring to Fig. 3, illustrating the arrangement of the classifier and separator with relation to a stamp mill or ore crusher and. jigs or concentrators, 2 designates a stamp mi l and 3 two double jigs. The

pulp or crushed ore from the stamp millis delivered by a suitable launder or conduit 4, upon the top plate It over the plunger com artment at the. head end of the classilicr. he discharge spout 0, leading from the interior of the shield at the tail end of the classifier, discharges into launders or conduits 5 5, leading to the head ends of the jigs 3. The discharge openings 2 at the ends of the box g are connected by suitable conduits 6, with slime tables or other machines or apparatus for further treatment of the lighter material which flows over the tail plate m of the classifier.

in the operation of the machine, the material as it comes from the ore crusher 2, containing particles or pieces varying in size from slinies to coarse gravel, is fed over the plate h upon' the screen a, and is subjected uniformly the entire width of the screen to the pulsations of water produced by the plunger f. .The material is thus caused to arrange itself in layers according to the specific gravity of the iarticlcs, the line heavy particles working downward and passing through the screen into the hutch b, from which they are removed through the openings c, and the light particles working up ward. The material remaining on the screen is gradually advanced towards the tail end by the pulsating current of water. Bythe time it reaches the shield j, the lightest particles have assumed a position in the upper part of the bed, the heaviest particles a position next to'the screen in the lower part of "the bed, and particles of intermediate weights or specific gravities in layers or strata between the top and bottom of the bed. by the pulsating current of water above the lower edge of the shield 7', are carried around outside of said shield over the tail plate 'm,

into the box y, from which they are conducted off through conduits 6, for further treatment on slime tables orother apparatus.

By varying the height of the tail plate m,

the size of the largest particles entering into The fine light particles and slimes held the slimes can be regulated. The heavier material occupying the intermediate portion of the be and passing under the shield j, is subjected tothe pulsating current of water as before, and the lighter particles occupying a position above the lower edge of theinner shield 1', )ass around it and are discharged through the opening a and spout 0, into the launders 5, by which the sand and gravel are conducted-to the jigs 3 for further treatment. The heavier particles, lying closer to the screen, pass under the shield 7' and are drawn off as a concentrate through the hose 1;. By varying the height of the intake end ofthis hose a body of concentrates of any desired depth can be maintained upon the screen to serve as a bed through which the finer particles or hutch-Work have to pass.

continuously or intermittently;

with a pluralit This will serve alike when the desired coucentrate is ol' the same material as the bed and when it is of dillerent material. The height of the shield r with relation to the a screen determining the grade or character ot' l the material that can pass into it, by vertical adjustment of the shield mineral of any desired concentration may be discharged therefrom. The outer shield 5 must be adjusted to extend at its lower edge sullicientl into the upper part of the screen bed to ireventslinies from passing underneath an entering it with thegravel and sand. The slime separation is also regulated by the gate 1), the area of the opening a determining thev amount of water drawn from the screen through the shield y', and the amount overflowing the tail plate.

The amount of water discharged through the opening or must be sullicient to remove the gravel and sand, but must not be sufficient to draw from the supply which carries the ore to the screen ot ierwise, slimes Will be drawn oil underneath and through the shield j, with the gravel and sand. When once the proper area of this openin n has been determined and adjusted by the operator, the machine requires no attention except as the quantity and quality of material treated may materially vary.

'a conduit from the crusher .in; a screen By means of the apparatus constructed and arranged as herein shown and described, a prelin'iinary classification ismade of pulp or crushed ore, into first, fine heavy concentrate or hutch-work; second, coarse heavy concentrate which is discharged third, jigging gravel. and sand, or material requiring further treatment fourth, slimes.

It will be apparent that by increasing the number of shields, the jigging material or material requiring further treatment, and the concentrates, ma be further 'subdivided, so that different kinds or grades of material may be deliver-ml. at the same time fronnthe classifier. The amount of water required to operate this classifier and to separate and rcmox'e the slimes, is less than they required for the operation of any of the slime separators or pulp classiliers in general use, besides, a final concentration of ore is obtained and dilution and loss of shines are avoided. V

, arious chan es in details of constructaon and arrangement of parts may be made within the spirit and intended scope oi the invention.

We claim:

.I. in apparatus for treating ores the combinatien with a crusher and a concentrator, of an intermediate classifying comprising a screen and means for producing pulsations oi water through the screen and provided oi discharges above the screen, ineludi a slimes discharge, a concentrates discharge and a discharge for material requiring further treatment, means for restricting the volume of water passing out with the stones, from the discl'iarge for material requiring further treatment to the concentrator, and

to the classifying jig, substantially as described.

2. ln apparatus for treating ores the combination with a crusher and a concentrator, of an intermediate classifying jig compris and means for producing pulsat ions of water through the screen and provided with a plurality of discharges above the screen, including a slimes discharge and a discharge for material ret uiring further treatment, and with means or restrict in; the volume of water passing out with the slimes, a conduit leading from the discharge for material requiring further treatient to the concentrator, and a conduit from the crusher to the classifying jig, substantially as described.

3. In apparatus for treating ore the combination with a crusher and a concentrator, of an intermediate classifying jig comprising a screen and means for producing pulsations of water through the screen and provided with a tail plate extending above the screen, a shield terminating at its lower edge below the top of the tail plate, a discharge conduit for slimes which passover the tail plate and means for restricting the volume of water passing out with the slimes, a conduit for material re uiring further treatmcnt leading from sai shield to the concentrator and a conduit from the crusher to the classifying jig, substantially as described.

4. In apparatus for treating ore the combination with a crusher and a concentrator, oi. an intermediate classifying jig comprising a screen and means for producing pulsations of water through the screen, and provided with a tail plate extending above the screen, a vertically adjustable shield terminatin at its lower edge below the top of the tail p ate and above the screen, a discharge conduit for slimes which pass over the tail plate and means for restricting the volume of water passing outwith the slimes, comprising a valve for adjusting the discharge a conduit leading irom said shield; a conduit for material rewater'through the screen plate extending above with the shines, a conduit for material re uiring further treatment leading from one s iield to the concentrator, a discharge conduit for concentrates leading from the other shield, and a conduit from the crusher to the classifying jig, substantially as described.

6. .In ap )aratus for treating ore the combination wit 1 a crusher and a concentrator, oi a classifying jig comprising a screen and means for producing through the screen and irovided with a tail plate extendin above t 1e screen, vertically adjustable shie ds terminating at their lower edges at different levels below the top of the tar late and above the screen, a d sch arge con uit for slimes which pass over the tail plate and means for restricting the volume of water passing out with the shines, a conduit for material requiring further treatment leading from thehigher shield to the concentrator, a discharge conduit for concentrates leading from the lower shield and a conduit from the crusher to the classifyingjig, substantially as described.

7 In ap aratus for treating ore the'combination with a crusher and a concentrator, of a classifying jig comprising a screen and means for producing pulsating currents "of and provided with a tail plate extending above the screen, vertically adjustable shields terminating at their lower edges at different levels below the top of the tail plate and above the screen, a discharge conduit for slimes which pass over the tail plate and means for restrictin the volume of Water passin out with the s imes, comprising avalve for ailjusting the discharge from said shield; a conduit for material re-' quiring further treatment leading from the higher shield to the'concentrator, a discharge conduit leading from the lower shield and having a vertically adjustable inlet within said shield, and a conduit from the crusher to the classif ing jig, substantially as described.

8. 1 h ap aratus for treating ore the combination wit a crusher and'a'con'centrator, of a classifying ji comprising a screen and means for pro ucing pulsations of water through the screen and rovided with a tail 1: e screen and with shields arranged one Within the other with 4 their lower edges at diflerent levels belowthe' top of the tail plate and above the screen, a I discharge conduit for slimes which pass over pulsations of water the tail plate, a discharge conduit .for mate rial'rct uiring further treatment loading from the space but cen the shields to the concentrator, a discharge conduit for cmicentrates leading from the inner shield, and a conduit from the crusher to the classifying jig, substantially as described.

9. in apparatus for treating ore the combination of a screen, a hutch surrounding and extending above the screen and rovided above the screen with an overflow tor light, floating or suspended material, and at a level below that of the overflow with a submerged discharge, a shield interposed between said discharge and overflow and extending below the overflow, means of restricting the flow of material through said discharge from the space cut oil by said shield, a second shield. located within said space, extending below the first shield and forming an inclosuro for concentrates, a discharge-conduit for concentrates leading from said inclosure, a water supply connection leading into the hutch and adapted to produce an upward current through the screen and the jigging bed. thereon, and means for producing pulsations of the water through the screen and jigging bed, substantially as described.

10. In apparatus for treating ore the combination of a screen, a hutch surrounding and extending above the screen and provided above the screen with an overflow and at a level below the overflow with a submerged discharge, a shield interposed between said discharge and overflow and extending below the overflow, a shield r. ithin the space cut off by the other shield, a discharge conduit having a vertically adjustable inlet within the p y connection leading into the hutch, and

means for producing pulsations of water through the screen and the jigging bed thereon, substantially as'deseribedi In witness hereof, we hereto affix our signatures in presence ol" two witnesses.

' FREDERICK l]. WOODEURY.

BENJAMIN HARRIS. CENTENNIAL HARRY BENEDlC'l.

of Benjamin pace cut oil by the inner shield, a r-xater sup-'

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