US596021A

US596021A - Ore classifier and slimer

Info

Publication number: US596021A
Authority: US
Publication date: 1897-12-21
Anticipated expiration: 1914-12-21

Description

(Nb Model.)

W. E. WILD.

ORE GLASSIPIER AND SLIMER. l No. 596,021. Patented Deo.21,1897.

we wams Pneus co. wom-x who, wAsnmoTsN. u. c,

UNITED STATES 1 PATENT EEIOE.

ORE CLASSIFIER AND SLIIVIER.

SPECIFICATION forming part of Letters Patent No. 596,021, dated December 21, 1897.

n Application led January 15,1897. Serial No. 619,298. (No model.)

-to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in ore classiiiers and slimers; and it consists of the features, arrangements,and combinations hereinafter described and claimed, all of which will be fully understood by reference to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a vertical longitudinal section taken through the apparatus. Fig. 2 is a horizontal section taken on the line y y, Fig. 1, looking downward. Fig. 3 is a similar section taken on the line '.r, Fig. 1. Fig. 4 .illustrates the valve mechanism for controlling the discharge from the vertical conduits, the parts being shown on a slimes that settle thereon may be easily drawnV off from a port or ports 8, formed where the parts 5 and 5c of the bottom are joined together. In the center of the tank 5 is located a hollow cylindrical column 9, composed of sections 9a, set one upon another. These sections may be cast-iron and are provided with lianges 9, bolted together. As shown in the drawings, the column 9 is composed of six sections, though a greater or less number of sections may of course be employed. The bottom 9d of the lowermost section of the colfying apparatus.

umn is provided with a tubular projection 10, whose lower extremity rests upon a hollow pedestal 12. To the topmost column is attached a boss 13, to which is secured a vertical shaft 14, carrying a fast 'bevel-gear 15, meshing with a similar gear 16 on a shaft 17, to which power is applied for rotating the column 9. Surrounding the boss 13 and attached to the base thereof is a hopper 18, open to receive the material to be treated from a chute 19, leading from a stamp-mill or other pul-4 verizing apparatus.

The wall of the hopper is provided with openings close to the bottom to allow the material to escape to a downwardly-inclined circular plate 20, attached to the top flange of the uppermost section 9a.' This plate 20 may be .coated with mercury for purposes of amalgamation when the material under treatment carries free gold or other amalgamable metals. To the bottom flange of the same section is attached-a screen 21, having a vertical ange 21a formed at its circumference. This screen is oppositely inclined to the plate 2O and projects beyond the same, whereby it is adapted to receive the material from the plate. This material is delivered by the plate to the outer portion of the screen close to its flange 21, whereby the said material is made totravel over the entire surface of the screen. The portion of this material too large to pass through the screen 21 is delivered through suitable openings formed in the adjacent section of the column to a hopper 22, located in the adjacent lower section of the column. A vertical pipe or conduit 23 leads from the mouth of the hopper 22 and discharges into one of the compartments 24C of a receptacle 24, from which it passesby Way of a dischargepipe 25 into a stationary vat 26, divided by circular partitions 27 into a ynumber of com.- partments 28, from which it may be drawn off for further treatment. The receptacle 24 is made fast to the depending part 10 of the column 9 and therefore rotates with the column. It is divided by radial partitions 24a into a number ,of compartments 24 equal to the number of the grades of material into which the ore is to be separated by the classi- Each section of the hollow vertical column 9, except the lowermost, is provided with a IOO plate 20 and a screen 2l. The uppermost screen is of coarsest mesh, and the mesh of each succeeding screen toward the bottom is finer, the bottom screen being the finest of all. Hence the material that passes through the uppermost screen falls to the plate 2O next below and thence to the finer screen. The material rejected by this last-named screen passes to another hopper 22 and thence by way of a pipe 23 to another compartment 24 of the receptacle 24, from which it is taken b y another pipe 25 and discharged into another compartment 2S of the vat 2G, and so on, the material rejected by each screen from the top toward the bottom of the column being iiner and discharged by way of a hopper 22 and a pipe 23 intoaseparate compartment 2stc of the receptacle 24, there being as many grades ot material as there are'screens 2l. The apparatus shown in the drawings (see Fig. l) is provided with iive screens 2l. Hence such a machine would classify, size, or divide the ore into iive different or distinct grades or sizes, each grade being kept entirely separate while passing through the niachine and nally discharged into a separate receptacle or compartment of its own.

The discharge extremity of each pipe 23 is controlled by a conical valve 29, attached to an arm 3l and surroundingand sliding upon a vertical water-pipe 30, projecting into the pipe 23. To each arm 3l is attached a lug 3l, through whichpasses a screw 32, threaded to engage a threaded aperture in a lug g of the lowermost section tl of the column 9. The valve may be raised or lowered by turning the screw 32 and the discharge from the pipe 23 regulated. It is desirable that the lower extremity of the pipe 23 shall be open only wide enough to discharge the ore which enters the same; otherwise the water would How too rapidly through these pipes.

The lower part of the hollow pedestal l2 communicates with the water-tank 33,/ which may receive its supply from the overow of the tank 5 or from any other suitable source having a proper pressure. The water rises in the pedestal l2 and passes through outlets 3ft into the pipe 30. This upward discharge of water prevents the slimes from passing downward with the sized or classified ore. It also prevents any tendency on the part of the material to clog the pipes. The volume ot' water passing through the pipe 30 is regulated by valves 35, whose stems 35n are provided with hand-wheels 35".

The slimes, or the material so fine that it is held in suspension by the water, is allowed to settle in the bottom of the tank 5, where it may be drawn off through a port or opening, as heretofore explained. The water which enters the tank is allowed to overiiow at the top into a slime-tank 3G, suitably supported. This slime-tank receives a grade of slimes which will not settle in the tank 5 by reason of the agitation of the water incident to the rotation of the column 9 and its connections as well as the discharge of the material into the tank 5. In this tank 3G there is very little agitation, and the slimes consequentlyhave a better chance to settle than in the tank 5. The material which settles in the tank 3G is drawn off at the bottom thereof through a port 37 and carried to any suitable recepta cle, where it may be subjected to further treatment by the cyanid or any other suitable process. The tank 3G has also an overflow into a tank 38, which receives a still iiner grade of slimes. The entrance to the tank 38 is Filled with straw or similar iiltering material 39 to check the flow or current of water. The slimes which settle in the tank 3S may be drawn off through a port 4-0 and carried to any suitable receptacle. There is also an overflow from the tank 3S, which may be connected with another slime-tank, and so on, as many slime-tanks being used as are necessary to thoroughly impoverish the water of its slimes or metallic values held in suspension. The overflow from the outermost slimetank may be carried by means of a suitable conduit to the water-tank and thence into the pipes 23 for the purpose heretofore stated. Hence there need be no loss of water. The slimes from the tanks 5, 3G, and 3S or from all the slime-tanks may be drawn ott and car ried to a common receptacle.

.Having thus described my invention, what I claim isl. The combination of a stationary tank adapted to hold liquid, of a hollow column rotatably mounted therein, two or more inclined screens of varying mesh attached to the column one above another, said screens being downwardly inclined from their outer edges which are highest, o1 positelyincli1ied plates also attached to the column and adapted to direct the material to the outer edges of the screens, and suitable means located within the hollow column and communicating with the individual screens for conducting the different grades of material to a suitable receptacle.

2. In an apparatus of the class described, the combination of a stationary tank having an opening in its bottom, a hollow rotatable column located in said tank, projecting through the opening in the bottom thereof and resting upon a suitable support, the tank being adapted to hold liquid when the column is in place, two or more conical screens attached to the column, one above another, their outer edges being highest, oppositelyinclined plates also attached to the column and adapted to discharge the material to the outer edge of each screen, and conduits located within the hollow column and communicating with the individual screens at their upper extremities, while their lower extremities have outlets at the bottom of the column.

3. In an apparatus of the class described,

the combination of a stationary tank having an opening in its bottom, a hollow rotatable column located in said tank, projecting IIO A tank being adapted to hold liquid when the column 'is in place, a series of conical screens attached to the column one above another, their outer edges being highest, oppositelyinclined plates also attached to the column and adapted to direct the material to the outer edges of the screens, conduits located within the hollow column and communicating respectively with the individual screens at their upper extremities, while their lower extremi ties have outlets at the bottom of the column, a suitable receptacle attached to the column below the tank and divided into compartments to receive the different grades of material from the respective conduits.

4. In an apparatus of the class described, the combination of a stationary slime-tank having an opening in its bottom, a hollow rotatable column located in said tank, projecting through said opening and resting upon a suitable support underneath, a series of conical screens attached to the column one above another,their outer edges being highest, plates also attached to the column and oppositely inclined from the screens whereby they are adapted to direct the material to the outer edges of the screens, conduits located within the hollow column and commu nicatin gl re-v spectively with the individual screens at their upper extremities, while their lower extremities have outlets at the bottom of the column,

a suitable receptacle attached to the column below the tank and having compartments to receive the different grades of material from the respective conduits, and a valve connected with the lower extremity of each conduit and adapted to control the discharge therefrom.

5. In an apparatus of the class described,

Vthe combination of a stationary tank having an opening in its bottom, a hollow rotatable column located therein and projecting through the bottom opening, the tank being adapted to hold liquid when the column is in place, a suitable supportl or pedestal locatedv ing in mesh as described, oppositely-inclined plates also attached to the column and adapted to discharge the material to the outer edges of the screens, conduits located within the hollow column to which they are made fast, said conduits communicating respectively with the individual screens at their upper extremities, while their lower extremities are provided with outlets at the bottom of the column, a suitable receptacle attached to the column below the tank and having compartments to receive the diierent grades of material from the respective conduits, a conical valve adapted to project in to the lower extremity of each conduit, a verticallymovable arm supporting said valve, and suitable means for raising and lowering the arms whereby the valves are adjusted and the discharge from the conduits controlled.

6. In an apparatus of the class described, the combination of a stationary tank having an opening in its bottom, a hollow rotatable column located in said tank and projecting through said opening, a suitable support located below the tank and upon which the column is mounted, a series of conical screens of varying mesh attached to the column one above another, their outer edges being highest, oppositely-inclined plates also attached to the column and adapted to discharge the material to the outer edges of the screens,con duits located within the hollow column and communicating at their upper extremities with the individual screens, while their lower extremities have outlets at the bottom of the column, a suitable receptacle attached to the column below the tank and having compartments to receive the dierent grades of ma,- terial from the respective conduits, suit-able Valve mechanism for controlling the discharge of material from the conduits,and water-pipes connected with a suitable supply source at their lower extremities, their upper extremities opening into the said conduits.

7. In an apparatus of the class described,

the combination with a stationary slime-tank having an opening in its bottom, a hollow rotatable column located in the said tank and projecting through the opening in the bottom thereof, the said tank being adapted to hold liquid when the column is in place, the upper extremity of the column being suitably supported, a series of conical screens vattached to the column' one above another, said screens being of varying mesh, their outer edges being highest, oppositely-inclined plates also attached to the column and adapted to discharge the material to the outer edges of the screens, conduits located within the hollow column to which they are made fast, the upper extremities of said conduits communicating with the individual screens, while their lower extremities have outlets at the bottom of the column, a suitable receptacle attached to the column below the tank and adapted to receive the different grades of material lfrom the respective conduits, a valve for controlling the discharge from the lower extremity of each conduit, a vertically-movable arm supporting said val ve, and means for raising and lowering the arms comprising a screw passing through a lug in the arm and engaging a threaded aperture formed in a lug on the column.

8. In a classitier,the combination of a hollow rotatable column, a series of conical screens of varying mesh attached to said column, thev mesh of the screens increasing in ineness from y IIO 9. In a classier, the combination of a station ary tank having an opening in its bottom, a hollow rotatable column located in the tank and projecting through said opening, a series of conical screens of varying mesh attached to the said column, the mesh of the screens increasing in lineness from the top of the column downward, a series of oppositely-inclined plates also attached to the column and adapted to discharge the material to the screens, conduits located in the hollow column and adapted to receive the discharge from the respective screens, said conduits having an outlet at the bottom of each column, a receptacle also attached to the column and located below the tank, said receptacle being divided into compartments to receive the discharge from the respective conduits, a stationary vat located below the said receptacle and divided into circular compartments, and

suitable conduits leading from the respective4 compartments of the rotating receptacle and discharging into the corresponding compartments of the stationary vat.

l0. In a combined classifier and slimer, the combination of an upright stationary tank having an inclined bottom provided with a port controlled by a suitable valve, a vertical, hollow, rotatable column located in said tank and projecting through an opening in the bottom thereof, a suitable support below the tank upon which the said column is mounted, two or more conical screens attached to the column one above another and of varying mesh, the uppermost being the coarsest, oppositely-inclined plates also attached to the column and adapted to discharge upon the screens, and suitable means for conducting the several grades of material separately from the screens through the hollow column to separate compartments of a suitable receptacle.

l1. In an ore-classiiier, the combination of a hollow rotatable column, conical screens attached thereto and surrounding the column, oppositely-inclined plates also attached to the column and adapted to feed the ore to the outer edge of the screens which are provided with upwardly-projecting iianges, conduits located within the hollow column and adapted to receive the material from the respective screens, and pipes projecting upward into the lower extremities ol the respective conduits, said pipes being connected with a suitable water-supply source having sufficient pressure to force the water through the said pipes into the conduits.

12. In a combined ore classifier and slimer, the combination of a stationary tank, the rotatable column located therein, conical screens of varying mesh attached to the oolumn and located one above another, the uppermost being of the coarsest mesh, and one or more slime'tanks connected with the main tank and adapted to receive the overflow therefrom.

13. In a classifier' for ore or other material, the combination of a stationary tank having au opening in its bottom, a hollow rotatable -column located in said tank and projecting through the opening in the bottom thereof, a series of screens of varying mesh attached to said column, conduits located within the column, their upper extremities communicating with and being adapted to receive the material rejected by the respective screens, the lower extremities of the conduits having suitable outlets located at or below the opening in the bottom of the tank.

la. In a classifier for ore and other material, the combination of a stationary tank having an opening in the bottom, a hollow rotatable column located in said tank and projecting through said opening in the bottom thereof, the tank being adapted to hold liquid when the column is in place, a series of screens of varying mesh attached to said column, conduits located within and attached to the column, their upper extremities communicating with and being adapted to receive the material from the screens, the lower extremities of the conduits having suitable outlets located at or below the opening in the bottom of the tank, and suitable means for introduc ing water under pressure into the discharge extremities of the conduits to prevent the slimes from passing downward with the ore.

15. In an ore-classifier, the combination of a stationary tank having an opening in its bottom, of a hollow rotatable column located in said tank and projecting through said opening, suitable classifying or grading mechanism attached to the exterior surface of the column, conduits located within the column and adapted to receive the respective grades from said mechanism, the conduits having outlets below the bottom opening in the tank.

In testimony whereof I aflix my signature in presence of two witnesses.

VILLIAM E. WILD.

fitnessesz G. J. ROLLANDET, ALFRED J. OBRIEN.

IOO