' Oct. 8, 1946., ' E. R. IMCPHETERS ' 2,408,797 ORE CQNCENTRATINGI TABLE Filed Feb. 1, 1944. s Sheets-Shée£ 1' - 7 .1 Inventor Oct 8, 1946- 2,408,797 E. R. MCPHETERS ORE CONCENTRATING TABLE Filed Feb. 1, 1944 ' 3 Sheets-Sheet WW 3 06%. 5'8, 1946. E, R_ MCPHETERS ' I 2,408,797 ORE CONCENTRATING TABLE , Filed Feb. 1, 1944 3 Sheets-Sheet 3 Inventar I @Mm E gM I), Hi1, ’ Attorneys 2,408,797 Patented Oct. 8, 1946 ‘ UNITED STATES PATENT OFFICE $408,797 ORE CONGENTRATING TABLE ‘ Erwin R. McPhetei-s, Bois.e,.Idaho ' Application'vFebruary 1, 1944, Serial'No. 520,669 4 Claims. (C1. 209-——458) 1 This invention relates to ore concentrators, ore pulp speci?c concentrators and separators, sluice troughs and the like, the preferred embodiment thereof being ideal for recoveiy and separation ‘of raw minerals, this because it is possessed of . details and an arrangement thereof which will properly and systematically classify the ores into groups according to speci?c gravity, whereby ‘to 2 - . following description and the accompanyingil lustrative drawings. - In the drawings, wherein like numerals are employed to designate’ like parts throughout‘ the same-- ‘ ' Figure 1 is a top plan view of the ore-pulp‘re ceiving, concentrating, separating and classify ing unit or table constructed in accordance with the principles of the instant invention. provide an extra ?ne concentrate with three or Figure 2 is a side elevation of- the complete more lower classes of concentrates as is highly 10 apparatus or machine showing not only the ad desirable, for best marketing values. justable table but the retrieving bins 'for the ' ‘Considerable dif?culties and perplexing ‘situ classi?ed minerals. , ations attend thehandling and usage of-present Figure 3 is an end view of the structure seen day varied types of concentrating units in re in Figure 2 observing it in the direction from left covering .the minerals in scienti?c and best value 15 to'right. groups for marketing, the handlers of such units Figure 4 is an exaggeratedfragmentary detail getting either one good concentrate with extra view on the plane of the line 4—4‘of Figure 1 low production and too much value lost-i-n-waste, looking in the direction of the arrows. or a low grade ‘concentrate characterized by an Figure 5 is a transverse vertical section'on the '20 over-abundance of insolubles and waste. plane‘ of the line 5-—5 of Figure 4. Due to years of trained experience and research, Figure 6 is an exaggerated detail sectional and scienti?cally and otherwise, conducting mine elevational view taken on the plane of the gen operations I am familiar with various types of eral line 6-—6 of Figure '7. ball mills, pulp conditioning, sizing and deslimer Figure 7 is a fragmentary top plan View of the 25 machines, concentrator-type separators, sluice intake end of the table showing a diagonal sep boxes and the like. That is to say, and in par arator or partitioning unit in which a ribbed or ticular reference to the subj est-matter with which corrugated plate is employed to obtain a desired we are here concerned, I arnfull well aware that many and varied are the types of tables and ri?le action on the'ore pulp mass. The overall or complete structural arrange troughs employing zig-zag sluice-ways. I can, 30 ment may be divided, broadly into two parts‘; therefore, point out with particularity that, bear namely, A and B. The sub-structure A com ing in mind the already existing devices and de prises a, framework including uprights 9 with velopments in the prior arts, I have evolved and enclosing walls It! of appropriate material produced a concentrator and separator construci and dimensions, these de?ning an enclosure tion in which an arrangement of button-like in 35 which is divided, through the medium of trans-v dividually and selectively adjustable regulating verse and longitudinal divider walls H and I2 deflectors, in alternating sequence ‘at adjoining into classi?ed mineral depositories or bins. ends of the successive sluice-ways for grading and As seen by dotted line picturization in Figure 1, classifying ore pulp in its downward passage over the complete structure is divided into eight dis the plate, constitutes an outstanding develop 40 tinguishable bins. ment and improvement with which we are here The table-type separator and concentrator unit B has a slight gravity incline, the discharge particularly concerned. end being hinged as at l3 to the corresponding In addition to these adjustable ore pulp de fleeting regulators coasting with the discharge 5 end of the sub-structure A. At the opposite end the table or trough-walls M are provided with ends of the grading channels or sluice-ways, nov~ suitable brackets i5 engaged by the adjustable elty is also predicated upon the adoption and use end of raising and lowering feed screws 16 in of special type partitioning dividers, each divider ?xed brackets I‘! on the adjacent posts->9. The having a plate on one side disposed at an angle inlet or feed means for the ore-pulp is at the to the main horizontal base plate, and the op posite faces or sides of said partitions being bev~ eled to enhance settling of the graded or grouped concentrates. Other features and advantages of the inven left hand end of the structure, this being a channel of trough-like ‘form l8v from the de slusher and .ball-mill or similar crusher struc--. ture. The discharge channel is at the opposite tion ‘will becomemore readily apparent vfrom the 55 end and denoted by the numeral I91 As pre 2,408,797 3 4 viously indicated, the bottom of the box or table, denoted at 20, is preferably in the form of a polished steel or equivalent metal plate. This is provided at longitudinally spaced alternate points with discharge openings or holes 2| in alignment with the underlying bins. Certain of naeite, and cadmium. Separators l and 8 to be set at a speci?c gravity of three (3) which will recover the following these holes are provided with short tubes or minerals: malachite, azurite, calamine, spalerite, smithsonite, zincite, antimony, jamesonite, mag netite, red hematite, chromite, pyrolusite, molyb denite, titanium, descloizite, foleyrite,b1ueite,lln pipes 22 having hooks 23 to accommodate detach limonite, siderite, manganese oxide (wad) psilo able gravity test buckets 24 made for sizing and melane, rhodocrosite, volborthite, whartonite, keeping a close test on each separation step. 10 and any of the other minerals that may be Similar discharge pipes 2'5 with lateral shunting altered or oxidized, having a gravity over waste nozzles 26 serve to deliver the‘ remaining gravity lime or quartz (2.6). By accurate setting 1, 2 separated minerals into their deppsitories or bins. and 3 will produce different grade products if The plate is provided with a plurality of desired. _ staggered properly angled and arranged dividers 15 Gravity is very accurate and efficient providing or partition elements 21 of duplicate construc care is taken to overcome existing conditions, the tions, these dividing the plate transversely into main items in operating this concentrator to full progressively arranged sluice-ways 28‘. It will efficiency is to have plenty of water ?ow and to be noticed that the partitions 21 are so arranged crush ?ne to separate different metals (me as to terminate adjacent the discharge holes 2|. 20 chanically mixed). Chemically mixed metals Thus, the ore-pulp is concentrated as it leaves will fall between the two metals on the plate. each sluice-way and is acted upon before it The outstanding phases and features of the in enters the next sluice-way, this through the vention, structurally speaking, are the new and medium of the double pointed deflectoretype novel partitions de?ning and dividing the trough regulators 29. These grading regulators are in. 25 like table into the zig-zag concentration areas or number according to the number of discharge sluice-ways, the discharge openings at the con holes or openings 2|. In fact, each hole has a necting ends of the progressive sluice-ways and pulp grading regulator cooperable therewith and the valving type de?ectors and regulator mem— this is of crescent-shaped con?guration and ec bers 29, preferably of crescent-shaped con?gura centrically pivoted as at 30 with one point over 30 tion. , lying and partly valving the hole. The opposite As brought out in Figures 4 and 5, each di end is provided with an arcuate slot 3|‘ coacting vider is substantially V-shaped in cross-sectional with a bolt 32 and thumb nut 33 which permits form and provides a slanting or beveled face 21a proper angling and setting of said regulator 29. on one side. On the opposite side I provide a In order to bring out a function in the system metal strip or plate 21b. This construction and of operation to be later described, it is desirable arrangement is succeptible of accomplishing the to distinguish the regulators 29 successively by desired fast and accurate settling of the min the numerals I to 8, inclusive. Reference for eral laden pulp. this is had to Figure 1 of the drawings. It is to Reference being had at this stage to Figure 4, be pointed out too, at this point, that the pitch 40 I desire to call attention to the fact that the plate of the table unit A is generally very slight but it 211) is preferably adjustably mounted on the body is nevertheless variable to regulate it to deter 21a. This is accomplished by vertical slots 31 and mine for best recovery operations. appropriate screws or similar fasteners 38. As Extra water supply and delivery pipes 34 on op brought out in Figure 5, the purpose of this is to posite sides of the table-troughs are provided adjust the lower edge of the plate 21a toward and and these are, in turn, provided with jets 35 and from the table plate 20. Further, it will be no 36 leading into the respective sluice-Ways 28 to ticed that the partition strip or body 21a has its liquify the mass and to facilitate spreading the lower corner portion undercut and beveled as in water over the plate and to thus avoid conges dicated at 39, this cooperating with the adjustable :ion and to make for faster and accurate separa edge of the plate 21a to provide a concentration ion. pocket. I might also point out in connection with This concentrator is designed not only to sepa Figure 5 that the approximate degree or inclina rate the metals from the waste, but to separate tion of the plate 21a in relation to the table plate the heavier more precious metals from metals 20 is 78 degrees as indicated by the arrow-head of different character and weight, by gravity. line 40. Metals of different gravity may be separated Attention now comes to a re?nement or modi further after the ?rst concentration by putting ?cation depicted in Figure 7. In the other forms it over a second plate and watching the gravity of the invention shown the plate 21a can be closely. plain. In the arrangement seen in‘ Figure 7, the Separators I, 2, and 3 to be set for a speci?c plate is preferably corrugated, that is, provided gravity of six (6), which will recover the follow with ribs de?ning between themselves grooves ing minerals: gold, bismuth gold, tellurium, calaverite, nagyagite, hessite, petzite, sylvanite, silver (native), argentite, cerargyrite, stephanite, platinum, sperrylite, iridium, osmium, palladium, copper (native), cuprite, lead (galena) cerrusite, anglesite, pyromorphite, crocoite, massicot, scheelite, ferberite, hubnerite, wolframite, uranium, vanadilite, tin, cassiterite, quicksilver, cinnabar, bismuth, bismuthinite, niccolite, smaltite, and cobaltite. ' Separators 4, 5 and 6 to be set at a speci?c gravity of four (4) , which will recover the follow ing minerals: ruby, silver, calcocite, tetrahedrite. chalcopyrite, melaconite, bornite, brochantite, and thus preventing an undulated surface from end to end. The ribs 4| are of equal distances apart, that is from the left toward the right as seen in Figure 7. The two endmost ribs are more widely spaced as indicated at 42. The arrows 43, 44 and 45 designate generally the course of ac tion of the pulp. ' Referring again to Figure '7 it will be observed 70 that the end of the partitioning device 21 in prac tice terminates about one foot from the adjacent wall of the table. The adjacent pointed end of the crescent-shaped regulator 29 is disposed in ap proximate alignment with the pocket or groove de?ned by the undercut surface 39. This is 2,408,797 brought out by the dotted line. In practice the adjacent point is approximately one-quarter of an inch from the end of the divider or partition 21. The distance of the point from the partition is increased about one-quarter of an inch in each succeeding step. The device 29 is to be about eight inches in length and the left hand pointed end (Figure 7) laps the concentrate holes 2|. This being, in practice, about three and one-half inches in diameter. The crescent-shaped sepa rator itself is about two inches in height, this be ing two-thirds of the height of the partition unit 6 named divider and its opposite end overlapping and cooperable with the discharge opening. 2. In an ore-pulp concentrating and separating table unit, a bottom and a surrounding marginal wall, a pair of transverse partition dividers on the bottom, a discharge opening in the bottom at the free end of one of said partitioning dividers and adjacent the intermediate portion of the sec ond-named partitioning divider, and a crescent shaped regulator element eccentrically pivoted on the base with one point adjustably movable toward and from the free end of the ?rst-named partitioning divider and the opposite point over 21. lapping and co-acting with the discharge open Reviewing the principle of operation of the ar ing, said regulator element being adapted to 15 rangement depicted in Figure 7 it is evident that function not only as a valving element for the the pulp and water coming in at the inlet [8 will opening but as a de?ector, whereby to cause travel along the ri?led surface 4| of the plate 211) certain of the currents to pass between it and with reasonable velocity, the water and pulp con the free end of the partitioning divider and other. tacting the ri?ies being agitated and thrown away portions of the currents to pass and sweep around from the riiiied surface in a downward and out its curvate edge in the direction of the interme ward direction as indicated by the various arrows diate portion of the second-named divider. 43. This spreads the pulp over the plate 20. 3. In a structure of the class, described, an ore When it reaches the end of the riiiied partition pulp concentrator and separator table compris the pulp will be washed away with more direct ing a flat bottom, an intake in one end, a diagonal and added force over the regulator, that is, the partition secured to said bottom and engaged at ?rst pointed end of the regulator 29. The heavier one end with the wall of a table adjacent said in ores are washed down to and over the plate in take, the opposite end being spaced from the such a manner that the heavier ores will remain opposed wall of said table, said bottom having a below the lighter pulp on the plate and will (from discharge hole therein adjacent the last-named natural gravity) gradually settle into the pocket end of said partition said partitioning device or space 39. Then upon being forced and washed being provided on one face with an undulated plate for ri?‘ling the mass of ore pulp, and a sub apast the regulator 29 will permit the heavier ores to settle directly into the exit 2| and will stantially crescent-shaped adjustably mounted force the lighter ores and waste .to wash around regulator on the bottom of the table and having 35 the outside, that is, the convex surface of the one pointed end adjacent the coordinated end of regulator 29 into the next sluice-way to be treat said partition, the opposite end shiitably covering ed similarly, a portion of said hole, this to govern the size of It is thought that persons skilled in the art to the latter. which the invention relates will be able to ob 4. In a structure of the class described, an ore tain a clear understanding of the invention after 40 pulp concentrator and separator table compris considering the description in connection with ing a ?at bottom, a diagonal partition secured to the drawings. Therefore, a more lengthy descrip said bottom, said table having a surrounding up tion is regarded as unnecessary. standing wall, said partition being secured at one Minor changes in the shape, size and arrange end of said wall, the opposite end thereof being ment of details coming within the ?eld of inven spaced from an opposed parallel wall, said bottom tion claimed may be resorted to in actual prac having a discharge hole therein adjacent to the tice, if desired. last-named end of said partition, said partition Having described the invention, what is claimed being substantially triangular in cross-sectional as new is: form to provide a bevel surface on one side, a 1. In a concentrator and separator table unit 50 plate secured to the opposite side, said plate being for ore-pulp, a base plate, a transversely arranged shiftably mounted to vary the distance of its divider partition on said plate extending from one lower edge toward and from the bottom, and that side wall and terminating in spaced relation from portion of the partition below the lower edge of the other side wall, a second divider partition ex plate being undercut to coact with said bot tending from the last-named side wall and having 55 said tom and plate, and a substantially crescent its free end portion terminating in spaced relation shaped, adjustably mounted combined regulator to the ?rst-named side wall, a discharge hole in and de?ector on the bottom, the latter having the plate between the free outer end of the ?rst one pointed end adjacent to and co-acting with named partitioning divider and adjacent inter mediate portion of the second divider, and a piv otally mounted manually adjusted regulator and de?ector element on the plate having one end cooperable with the adjacent free end of the ?rst 60 the corresponding end of said partition, and the opposite end shiftably covering a portion of said hole, this to govern the size of the latter. ERWIN R. MCPHETERS.