Патент USA US2120965код для вставки
mists Patented June 21, 1938 UNITED STATES PATENT OFF€E 2,120,965 AMALGAMATOR Hyrum D. Ghristenscn, Wilford 0. La Rue, Oak land, and Victor E. Zackerson, Alameda, Calif. Application March 18, 1935, Serial No. 11,660 2 Claims. (Cl. 209-41) The invention relates‘ to machines used in connection with amalgamating operations such as for mixing powdered ore with mercury. An object of the invention is to provide an amalgamator of the character described which is especially adapted for the concentrating and removal of gold particles from, gold bearing ore, and‘ which will provide not only for the bringing o, of the ore into intimate contact with the mer cury for amalgamation, but also for such a move ment of the ore while in contact with the mer shelf or supporting portion II which is arranged to be cast or otherwise formed integrally with the plate 8 and the bracket 9. In accordance with the present invention, amalgamation of particles of gold or other precious minerals is C1 arranged to be effected by the passage of the ore or slurry through a con?ned space in inti mate contact with mercury. Such a space and passage is here provided between the opposed spaced bottoms I2 and i3 and sides ill and Hi 1 O of a mixing pan l1 and a plate 98 positioned therein. As here shown, the pan is rotatably supported by means of cooperating bearing por tions 19 and 2! on the shelf I I while the plate ” gagement with the mercury. i3 is supported by means of a shaft 22 rotatably Another object of the invention is to provide a device of the character described that will, ,carried in a bearing 23 provided at the outer v notwithstanding the con?ned movement of the end 24 of the overhanging bracket 9. In accordance with the present invention, a ore or slurry into intimate contact with the mer— cury, as aforesaid, provide for a continuous and deposit of mercury is ?rst placed within the pan I1 so as to completely ?ll the space 255 20 uninterrupted ?ow of material through the de vice and positively prevent any stoppage of the de?ned between the bottoms of the plate and various passages or packing of the ore in a way pan, and to extend partially up into the annu~ interfering with the ef?cient operation of the lar space 21 de?ned between the pan and plate side walls. Then slurry ‘is introduced into the device. A further object of the invention is to provide space 26 so that the mineral particles will be 25 an amalgamator of the above character in which caused to ?oat through the mercury in intimate a positive automatic feeding of material through contact therewith. The introduction of the slur ry into this space is here effected by forming the device will be effected without the use'of ex teriorly applied power, and wherein exterior the shaft 22 of tubular construction so as to de fine an inlet conduit 28 which extends from an 30 power is applied substantially entirely for the purpose of obtaining an intimate mixture of the enlarged intake portion 29 at the upper end of materials whereby the device will be more or less the shaft through the bottom It of the plate so as to open directly to the space 28 thereat. positive in operation with but a minimum ex Since, as here shown, the intake 29 is disposed penditure of power. well above the side walls IA of the pan, it will be The invention possesses other objects and 35 features of advantage, some of which, with the understood that a natural gravitational ?ow of slurry will be effected through the conduit 28 foregoing, will be set forth in the following de scription of the preferred form of the invention and radially through the space 26, and thence up through the mercury by way of the annular which is illustrated in the drawing accompany ing and forming part of the speci?cation. It is passage 2'! and over the sides of the pan. A to be understood, however, that variations in the drain member 3| may be mounted around the sides of the pan for gathering and discharging showing made by the said drawing and descrip the pan over?ow.v If desired the upper edge 32 tion may be adopted within the scope of the in ofthe pan walls [4 may .be'beveled outwardly and vention as set forth in the claims. provided with rif?es v33 as here shown so as to Referring to said drawing: 45 Figure 1 is a vertical sectional view of an agitate the material on flow thereover. The space 26 is preferably, as here shown, rel amalgamator constructed in accordance with atively wide and very shallow, in practice not ex my invention. _ ceeding approximately one eighth of an inch in Figure 2 is a plan sectional view of the amal depth for smaller sized devices, and to insure the gamator shown in Figure 1 and is taken substan retention of a quantity of mercury to within tially on the plane of the line 2-2 of Figure 1. The amalgamator shown in the accompanying the space, notwithstanding the outward flow drawing is comprised of a single unitary support therethrough of the slurry, we prefer to amalga mate at least one, or in some instances both, of 1 which includes a bed plate 8, a‘ vertical over the opposite surfaces 34 and 36 of the pan and hanging bracket 9 and a raised intermediate 55 p cury that the full exterior surface of all of the ore particles will be passed into operative en by (I: 20 30 55. 2 2,120,965 plate bottoms l2 and I3. It will thus be un derstood that on the passage of the slurry through this relatively con?ned space, in which a certain amount of mercury is maintained, a very intimate association is effected between the mineral particles and the mercury, and that this passage of slurry is substantially entirely effected by the natural gravitation of the material through the machine. 10 This radial passage of the slurry through the space 26 is increased somewhat upon rotation of the pan I1. Also, an additional and impor tant function of such rotation is to cause the mineral particles to be de?ected circumferen 15 tially from a straight radial passage and thereby caused to roll and orient themselves for com plete contact thereof with the mercury. Fur thermore, the rotation of the pan stimulates and insures the over?ow of sand and other particles from the pan. Normally but a relatively slow rotation of the pan is sufficient to provide a proper flow of material through the machine and yet afford a sufficiently long duration of contact between the slurry and the mercury. The cen 25 trifugal force imparted to the slurry by the pan may be offset somewhat by rotating the plate in an opposite direction, and this also has the added effect of increasing the circumferential agitation of the mineral particles and causing a greater turning thereof in and mixing with the mercury. In no event, however, is the centrif ugal force set up by the rotating pan and plate to be sufficient to cause an over?ow of the mer cury from the pan. Since the rotation of the pan and plate are, as above indicated, effected at a relatively slow speed and not for the ac complishment of any substantial work, it will be understood that the wear on the moving parts will be very slight, and that the power required 40 for rotating the members will be but a mini mum. venting or limiting the outward movement of the plate from the pan. Means are also provided for preventing the material from packing in the pan l1 directly under the inlet conduit 28 which, in the present embodiment, comprises a screw 52 which is ?xed to the bottom l3 of the pan and extends up wardly into operative relation with the open end of the conduit. Thus, on rotation of the pan, the material is drawn through the grooves of the screw and into the amalgamating space 25. As will be understood, after the machine has been in operation for some time it is desirable that the pan ll be removed so that the contents thereof may be carefully treated for the removal 15 of gold or other amalgamated products. To ef fect the removal of the pan I'l, it is first neces sary to remove the plate and shaft 22 so as to make room for the removal of the pan. This has been arranged for, in the present embodi ment, by securing the plate l8 and shaft 22 to gether as a unit and providing for their ready removal by forming the bearing 23 with a de~ tachable outer half section 53. Thus, to effect a removal of the pan I‘! it is only necessary to 25 ?rst remove the bearing section 53 and the shaft and plate assembly and then loosen the set screw 43 to permit the raising of the pan off the shelf H and the upper end 31 of the shaft 38. We claim: 30 1. An amalgamator of the character described comprising, a pair of members providing opposed spaced surfaces de?ning a relatively wide shal low space therebetween arranged to be submerged in mercury, one of said members being mounted for rotation along an axis intersecting said space, slurry inlet means opening to said space adja cent said axis‘and providing for a ?ow of slurry radially through said space with respect to said axis, means of rotating said last mentioned mem 40 ber to increase said radial flow and to impart to As here shown the pan is mounted for rota said slurry an annular motion and means for rotating said other member in an opposite direc 38, carried by the shelf II and bed plate 8 and tion so as to partially balance the radial flow 45 which is driven through a pair of bevel gears 39 ‘ caused by rotation of the ?rst member and to 45 and 40, and a horizontal shaft 40, by a motor. increase the annular motion of the slurry. 2. An amalgamator of the character described 42 mounted on the bed plate at the outside of comprising, a pair of members providing opposed the bracket 9. A set screw 43 carried in the vertically spaced surfaces de?ning a relatively base of the pan serves in the present case to de wide shallow horizontal space therebetween, the 50 tachably secure the pan to the shaft 38. R0 lower surface having a rim to contain mercury, tation of the plate, on the other hand, is ar ranged to be effected in an opposite direction one of said members being mounted for rota tion about an axis intersecting said space, slurry through means of pulley wheels 44 and 46 mount ed on the shafts 22 and 4| respectively and inlet means opening to said space adjacent said axis and providing for a ?ow of slurry through 55 55 which are connected by a cable 41, here shown supported in operative relation to the pulley said space, means for rotating said rotary mem ber to cause the ?ow of slurry through said space, wheels by means of sheaves 48 mounted on the the upper of said surfaces being permanently upper side of the bracket 9. tion on the upper end 31 of a vertical drive shaft Also, in the present embodiment, the pulley wheel 44 is provided with a set screw 49 for ad justably positioning the wheel on the shaft 22 and is arranged to bear on the outer side of the bracket end bearing 23 so as to control the rela tive positioning of the plate l8 in the pan, and a collar 5| is preferably mounted on the shaft 22 at the under side of the bearing 23 for pre amalgamated separate from any amalgamation by said mercury to present an upper amalgamat 60 ed surface above said mercury to thereby cause intimate contact of all portions of the surry with mercury in said space. I-IYRUM D. CHRISTENSEN. WILFORD C. LA RUE. VICTOR E. ZACKERSON.