Патент USA US2122400код для вставки
July 5, 1938. 2,122,400 G. ci. ANDERSON AMALGAMATING MACHINE Filed Jan. 14, 1936 2 Sheets-Sheet , 1 22 W ___ 7//1//1/1/1//1 24 7 fl. l / / /// //// III 34 2 / FIG. 2 ..-l-r //////////////////////////m |NVENTORI GUY C. ANDERSCN @mw/ß ATTORNEY July 5, 1938. G. c, ANDERSON 2,122,400 AMALGAMATING MACHINE Filed Jan. 14, 1936 2 Sheets-Sheet 2 ¿ l» 28 FIG. 3. 32 29 ` 23 // ? 27 33 F'IG. 4. 255 \ , _ 3o` 3l _îî î-_î‘ , _____Äï-îî" 32 33 -l ~lNvaN‘roR; 32 ` . GUY c. ANDERSON ATTORNEY Patented July 5, 1938 ' 2,122,400 UNITED STATES v PATENT OFFICE 2,122,400 AMALGAMATING MACHINE Guy C. Anderson, San Francisco, Calif. vl‘lpplicatio'n January 14, 1936, Serial No. 59,060 5 Claims. (Cl. 209-191) This invention- relates to improvements in amalgamating machines and more particularly to The vertical shaft 'I extends upward through this neck and Vis mounted in the radial thrust gold separators and the method of separating bearing 8 and the step bearing 9 supported within the pedestal. This shaft is driven by the bevel precious values from mineral pulp. _ In the natural state gold' particles are often Si A5 shaft I2, which is driven by the pulley I3 or any _magnetic oxides andß'non-ferrous magnetizable other suitable means. materials'especially in black sand. Finel gold netizable materials without removing such mate The rotor I4 has the upstanding blind hub» I5 clearing the neck 6 and is splined on the end of the shaft 1. The rotor clears the bottom of the bowl and has the upper flat tractive surface I6, provided with the depressions I'I. The nature of this grinding or rubbing surface can be varied to suit the particular nature of the pulp being l rials from the aggregated mass. acted upon. may adhere rto such materials, or- the gold may beencased in films containing magnetizable con stituents. . ' , " Among the objects of the invention is to effect mechanical separation of the gold from the mag ’ , , » Another object is to facilitate the amalgama tionrof free gold and gold bearing particles in the presence of mercury. ` _I Another object is to subject the amalgamating area to the influence of amagnetic field. `Anotherobject is to subject gold bearing pulp toga rubbin’gaction in the presence of mercury within a magnetic field;> Y _ e A’further'object is'to subject gold bearing pulp in'the-‘epresence‘of mercury to Vibratoryoscilla _ tions ’of high frequency. y Y v@ther objects and advantages will appear as the description progresses. - In this specification and the accompanying drawings the invention is disclosed in its preferred form. Howeverit'is to be understood that it is not limited 'toi this form because Vit may be em bodied in other forms within thepurview of the claims `following the description. p _ 11n. the two sheets of drawings: 'e 35 ff Fig. l is a vvevßrtical section of an amalgamating millj constructed in accordance with this inven tion." Á ' Fig; 2 'is `a4 plane detail of the rotor and stator 40 gear I0 and the gear II ñxed on the counter fcundin close association with magnetite, iron faces. , Fig. 3 is a side elevation, partially in vertical section, of the magnetic amalgamating trap for use in combination with the amalgamating mill in the present process of magnetic-amalgamation. 45 Fig. 4 is a detail view in horizontal section of one of the baffles in the amalgamating trap. In detail the construction illustrated in the drawings, referring first to Fig. 1, comprises the magnetic bowl I, mounted vupon the pedestal 2 - . n suitable base. l - A series of mills may be . ¢ i riven from a com 15 The stator I8 is similar to the rotor in general outline and has the surface I6’ contacting there with, and the center dome I9 enclosing the hub of the rotor. ' ` The splash plate or cover 20 is bolted to the rim 3 and overhangs the stator. The manual stud screws 2| are fixed in the stator I8 and threaded through the hand wheels 2|’ above the cover to regulate the mechanical pressure against the pulp flowing between the rotor and stator. 25 Therpulp introduced into the dome I9 through the hopper 22 is distributed by the rotating hub I5 of the rotor and passes between the _rotor I4 and stator I8 before escaping through the over fiow pipe 23 fixed through the rim 3 beneath the 30 cover-2D. The inductive coil 24 of an electro-magnet is introduced between the flanges 4 and 5 and en circles the rim of the bowl in line with the rotor and stator. This coil is in circuit with the gen erator 25 and the switch 26. When the switch is closed the coil is energized and creates a mag netic field acting upon the magnetic/.able mate rial passing through the mill' and particularly while being rubbed between the rotor and stator. Where ñrst cost is a controlling factor the ap paratus can be built of cast iron. But the iron tends to shield or concentrate the magnetic lines of force within the iron of the bowl. It is prefer able therefore to» form the bowl and other parts within the magnetic field of non-magnetic mate rial. There are metal alloys and vitreous mate rials suitable for the purpose, which will permit the magnetic force to act directly upon the mag netic oxides and the like, in the liowing pulp. From the overflow 23 the pulp is conducted wer end of the columnar trap 21 A ‘md nverñmsítlî. The 2,122,400 coil 29 in circuit with the generator 25 and the switch 30. The trap 2l contains the mercury 3| in its lower portion with the amalgam draw off pipe 32 at its lowest point. To impede 'the flow'of pulp, keep it turbulent and thoroughly mixed the series of bafñe disks 32, interspaced on the rod 33, are in serted into the trap to force the pulp into more diiTused contact with the mercury 3i. 10 The same magnetic conditions are set up in the trap as exist in the bowl l. The trap 2l is in tended to amalgamate any gold values not taken up inthe bowl. ` ' Y The pulp being fed through the hopper 22 is 15 mixedfwith mercury in a divided >state and is rubbed into Contact with the gold particles in The ñeid strength and arrangement of the coils 2:1 and 29 may be widely varied in the applica tion of the invention to the different types of amalgamators required for various mineral con ditions. A field of 2000 gauss will suñice for the amalgamating bowl illustrated. A considerable reduction of this ñeld strength will however not aiîect the eiiicacjy1 of the amalgamation. . Having thus described this invention what is claimed and desired to be secured by Letters E’atent is: Y 1. A mill in the class described including a bowl; a pulp rubbing means in said bowl; an amalgamating substance in said bowl in contact with said rubbing means; an electro-magnetic coil surrounding said bowl; and means for pass passing between the rotor and stator Iii-i8. ing alternating -current through said coil. The mercury 34 accumulates in the bottom of 2. A mill in the class described including a bowl; pulp rubbing means in said bowl; an amalgamating substance in said bowl in contact with said rubbing means; a single electro-mag netic coil ‘arranged to set up a iield in said bowl; and means for passing alternating current the bowl I, and is kept constantly agitated by the rotor so that the surface of the mercury 34 is kept bright and lively to select any gold values issuing at the peripheral discharge from the ro tor-stator lll-i8, into the bowl. This rubbing , action disintegrates any tarnish or film coatings 25 enveloping the gold or other values andrrenders Ul, through said coil.` , _ ~ 3. A mill- in thevclass described including them more readily amalgamatable. While there ~ bowl; a rotor in said bowl; means for driving is a certain grinding action takes place between said rotor; a stator in said bowl in operative re the rotor and stator due to the gritty nature of lation to said rotor; means for adjusting sai-d the pulp the particular function is to rub the gold stator with respect to said rotor; means for in into the mercury and cause the mechanical sep troducing the .pulp to be treated between vsaid " aration of the precious values from the gran rotor and said stator; an amalgamating sub ular material of the pulp. stance in said bowl in contact with said rotor and Much of this material is magnetic oxide and stator; an electro-magnetic coil surrounding said other magnetizable material polarized or mag bowl; and means for passing alternating current ' through- said coil. 35 netically activated in the magnetic ñeld of the bowl I and the trap 21. ïri this condition the ad 4. A mill in the class described including a hesive force is broken or minimized and the amal bowl having an upwardly projecting neck; a ro tor located below the level of said neck and hav ing a hub extending above said neck; a shaft ex~ tending upwardly through said neck and engag ing said hub; means for rotating said shaft; a stator in said bowl in operative relation to said gamatable values are immediately released and pass into the mercury. The magnetic ñeld also prevents amalgama tion of -ferrous and ferric compounds. This makesk it possible by this process to recover pre cious values from ores and sands which have ' heretofore been impossible because of the sick rotor and having a hopper extending upwardly therefrom; an amalgamating substance-in said ening of the mercury due to the absorption of iron compounds associated with the values. The vibratory oscillations set up within the bowl in contact with said rotor and said stator; 45 an electro-magnetic coil surrounding said bowl; and means for passing alternating current' mercurï.1 by the magnetic ñeld, especially when alternating current is used, tends to rupture thev through said coil. sickened skin which forms on the mercury, keep ing the surface bright, clean and more attractive to the values present. Since this vibration Aex tends throughout the whole mass of the flowing aggregate and the mercury, it increases the num - 5. A mill of the class described including a bowl;- a‘rotor in said bowl having a flat tractive 50 surface with depressions therein; means for driv ing said rotor; a stator in said bowl having a Aflat surface `with depressions therein in opera tive relation with the flat surface of , said rotor; berof collisions »between the gold particlesy and an amalgamatinglsubstance.in said bowl incon the mercury, thus speeding up amalgamation and conserving mercury. These effects are present in both the rubbing mill, Fig. l, and the magnetic tact with said rotor and> stator; an electro-mag netic coil surrounding said bowl; and means for passing alternating current through said coil. mercury trap, Fig. 3. . ` ' . GUE? C. ANDERSON.