US888767A - Apparatus for classifying solid materials. - Google Patents

Description

' PATENTBD MAY 26, 1908.

, I R. B. TROTTIER. I APPARATUS FOR GLASSIFYING SOLID MATERIALS.

APPLICATION I'ILED APR.1B. 19 07.

Mar 7% 4 SHEETS-SHEET 1.

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No. 888,767; PATENTED MAY-26, 1908.

R. E. TROTTIBR. APPARATUS FOR GLASSIFYING SOLID MATERIALS.

APPLIUATION FILEDAPR. 18,1901.

No. 888,767. PATENTED MAY 26; 1903.

I R. E. TROTTIERi APPARATUS FOR GLASSIPYING SOLID MATERIALS.

APPLIOATIOH FIQ BD 1 3.18, WIT.

4 SHEETB-SEEET s'.

'7 c u em a a a a u c PATENTED MAY 26, 1908 V r ill.

3. E. TEO TTIER.,\ APPARATUS FOR GLASSIFY-ING SOLID MATERIALS.

APPLIOATION FILED APR. 18, 1907.

Tavexafwl- 6 0/36 7 film/W Ail/MW? RENE EMILE TRO'ITIER, OF HUSSEI'N-DEY, ALGERIA.

APPARATUS FOR GLASSIFYING SOLID MATERIALS.

Specification of Letters Patent.

Patented May 26, 1908.

Application flledApril 18, 1907. Serial No. 368,993.

To all whom it may concern:

Be it known that'I, RENE EMILE TROTTIER,

citizen of the Re ublic of France, and resi- Algeria, engineer, have in I by the Word equivalence, it ma be said that two bodies are equivalent W on notwithstanding that they are of different specific gravity, their linear dimensions and their resistance to the medium in which they descend are such that both bodies arrive atthe same moment at a given scent; in other words, the odies are equiva lent when the resistance of the the descent of one compensates for the difference between the specific avityof this one and that of the other. descending in the same medium. may be equivalent if they present to the action of the medium the same resistance although their volume may be very d'ifi'erent.

The object oi the present improvements is tofacilitate the classification. and to increase the accuracy and sensitiveness of the apparaus by separating moresharplythe classifica- I tion by equivalence Irorn the classification b densit and b rendering more uniformthe feeding and distributing oi the ore in the ap aratu's. They also relate to severald'e-v 'tai s having reference moreparticularly to the use of automatic fluid-tight boxes for discharging the classified minerals, and to the method of oscillating the column of water of the apparatus in cases oltreatmeut of fine and adhesive mater-i; i.

he classifying tube is composed oi an uprmr portion free from any internalorgan, designed to cl'l'ect a prelin'iinary sop ration of the bodies by equivalence by the action oi their own descent, and of a series o'lsuporimposcd identical classifying elements romprisiug parts which serve to regulate the course or the classifying current in order to cause it to produce a determined. deviation. up n each oi" the species of the bodies to be oint of their de- I medium to '1 ins two bodiesv vmay be closed by sliding -shutters j.

linear in on) classified, and thus to se 'arate them according to their densities. n this arrangement, the ore is charged into thetube at regular and adustable intervals by a distributor situated at the upper part, while a distributing subdivider situated sifying element serves to spread this are in uniform sheets and to distributeuina suit able manner the constituent sheets.

In the accompanying drawings Figure -1' is a diagrammatic vertical section of a classifying apparatus according to the invention. Fig.2 is a horizontalsection on the line A-B of Fig. 1. Fig. 3 is va art vertical section of thetube illustrating t e mode of classifioation. Fig, 4 is a detail view illustrating the arrangement for removing the classified matter, which consists of an air-tight box acting as an automatic ,em tying device.

Figs. 5 and 6 are res ective y detail views illustrating two mod' cations Of lJhG,dBVIlC8 for producin oscillation of the column of Water when ely divided and adhesive materials are being treated. Fig. 7 is a modification of the apparatus when the classification is effected by air. Fig. 8 is an enlar ed view in transverse section through the istributing subdivide-r. Fig. 9 is a face View of the same Fig. 10is an enlarged face view of the riflledseparator and t rottlmg flap,

and Fig. 11 is a longitudinal section of the same from front to back. i

The distributer consists of a drum shaped like a truncated cone a of wire gauze o'r erforated The ore to be classified is introduced 'in'tothis drum through an'axially situated gutter 0; Around the drum a and fixed thereto is a. acliet d lia'vingat equal distances from each other openings 6 which 'llhis distributor is lor'the purpose of dividing up and diluting the ore to be clussii ied. Itdischarges into the apparatu; at regular intervals oi time, Iougoror Hili tor according to the 'speoil with whichthe jaekctd rotates, and ni'coif'ding to the number a-il' opcuin g: which are, iulcovoredl qunnlitios of. ore sobstziulinllyunil'orm. 'i

- 'llw ('lu il'ying tube is prelerably rectisoiztion; its width isa function ol' the sin of the ore mtrier-treatment, and its length HI]. section is a function ofthc power er bodies in these.

metal rotating at uniform spec on its axis and partially immersed iii-the classitying current, in this case awater current, up to the levelb.

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out utof theapp aratus. Its \iseig. which .depe ds closely upon thc f'tw di cnsions aforesaid, is pr portionate to tihe degree of "clas fication b e uivalence which is to be attained; The tribe consists of identical classifying elements 9, and of an extension h arranged above the top classifying element. The ore char ed by the distributor, classifies itself by equivalence in this extension, and allits constituents thus arrive successively and in thcirorder at the classifying elements in such a manner as to enable these tojwork to thebcst advantage. r

Above the upper element gis a distributing subdivider consisting of an inclined table .0, rovided with oints j arranged quincunxia] y. This sub ivider serves to equalize and to spread the sheet of ore discharged by the distributor, and to form it into a layer of completely uniform thickness, presenting always the same resistance to the action of the classifying current. According tothe size of the ore treated the pins 9' are more or less spaced a art.

The c assifyin elements 9 which are superposed in en cient number according to the result to be obtained and the number of s ecies to be separated, have at each enda ange whereby they can be connected togather or with the upper extension. Their mternalsurfaces are accd and one of them carries a'shoe in acting as a controlling device and vertically movable within the tube. This shoe can be fixed at any desired position by an appropriate device. Each element has a flap m hinged on an axis and capable of being turned on the latter from without the ap aratus so as tofchange its inclination." This ap may have ribs or riffles normal to the direction of the axis at and the deeper the coarser the ore under treatment. The shoe 7c and the flap m are for the purpose of throttling more or less the classif iug current so as to accentuate or diminish t c deviation 45 .whichthis currentproduces on thecourse of the substances classified which are descendthe tube at a certaiirvelocity.

i he bent plates 0 uide the ore which passes each element an at the same time diroot the course of the classifying current. Vanes prevent, when the operation is norncl, this currentfrom diverting the ore along these plates and compel it to assume a proper direcac The vanes can be turned on an 56 axis and are independent of each other in the 'erent elements. The vertical portion of the directing plates 0 maybe provided at all eventsin the upper-elementsgin this case only the-first,withhoripontal' ins 1' arranged quincunxially and 'havi'n tl ie function of 1 scattering .the or :a conducting th suming che ementlhas ac ut'e" assified material to he seems? classifying element has achute s for the a..- charge of the pure material. This bottmn element is also connected with the admission pi as t for the air or the Water under pressure v iich is to constitute the classifying current and escapes by the top chute s at the level I). The materials discharged through the chutes s and s are in the example shown received in elevators a which bring them up to the top level above the water.

Instead of elevators there may be used,

simple boxes tightly closed and having an automatic discharge or not. Fig. 4 shows an example of this arrangement. The chute lapses. and the material escapes laterally from the bottom of. the box. when the latter has been unloaded the bellows expands again and'closes the bottom of the box. The discharge is thus automatic. If a tight box without an automatic discharge is used, it may be provided with an air-lock chenilmr to allow of the material being removed with .out discharging the column of water in the apparatus. p The a paratus operates as follows -As- For example. that the apparatus is being Worked with water and by an ascend ing current, the valve which closes the pipe at is first opened, and as soon as Water flows through the chute s the distributor is started. The ore then falls through the openings 6 in uniform sheets into the extension it be ing here preliminarily classified by cquiva 1c various constituents thus arrive lence; 'T already separated on the table 'i where the descending sheet is spread and equalized before it enters into the, classifying elements. There, under the. infidence of their speed, and under the action of'the classifying current controlled by the respective positions of the shoe It and of the fia in, theuniforin sheet 3/ (Fig. 3) is latera 1y diverted and forms a curvilinear sheaf y having the point lot the shoe is for its summit; and accordingly as the distance between the shoe and the flap m is reduced or increased, the cheat thus formed .18 *increased or diminished.

The progress of the classifying current is indrcated by the arrows in Fig. 3, and it will be seen thatby modifying the form of the sheaf one canarrestat, or allow to pass each elemerit, the .giesired substance or substances with absolute precision, the separation. being reflected;in the current itself, and-therefore practically without any resistin friction lniinormal operation, the enhancer iu. the mply diverted more or less from their original direction, but are not carried aiong dire eaid elernents' ccu'iprising a vertically movable regulating shoeand an ad ustable separating plate or :l'lap located, below and arranged. to Wmll'. in conjunction with the shoe to regulate the force and direction of the el ying current, a flap for regulating the rmtput, and. meausjfor securing the roper tiou ol' the classifying current, ant parts lor receiving and discharging the classified materials.

3. Elk classil'ying aaparatus coin rising a vertical tube, means "or causing ac assifying current to pass tllerethrough, a distributer located at the upper part oi the tube and consisting of a rotatn'ig perforated drum surrounded by a easing fixed to said drum and formed with longitudinal a ertures through which the ore to be classifie falls in sheets at more or less close intervals, a tubular element free from an internal. organ, for classifying by erpiivalence, a distributing divider serving to regulate the descending sheets of ore, and consisting'of an inclined table iurnislunl with pins, means for deflecting the ore liilt rally under the two'fold action oi the ct: lying current and of their own vellurity, and arts for discharging and receiving the classi ed materials..

a. bias ying apparatus comprising a .3 vertical tube, means lor causing a currentof water to llow therethrimgh in a suitable direction, a distribut r for deliverin the mate a sto be cl led into the tribe, a tubular churn l'rec ilrorn any internal organ, for clas y'ng the, materials by equivalence, a diatrib "u' q-ilivider at the base of said element, a sales of superposed classifying elemerits for classitlying by" density located be low the tubular elen'ient "for classifying by eqi'iivalraice, cl'iutes leadingfrom the said superposed density classifying elements,

fluid-tight bones arranged to receive the material from the chutes and yielding countcrbalaneed bottoms for said, boxes.

5. A classifying a )pa ratus com rising a vertical tube, means or causing a c assifying current to flow tlierethrough, a distributer for delivering the material into the tube, a tubular element free from any internal organ, for receiving the material from the distributer, a distributingdivider at the base of said tubular element; a series of superposed densit classifying elements, means for receiving water to flow thcrethrough, a distrlbuter for delivering the material to be classified into the tube, a tubular element free from any internal organ, for receiving the material from the distributer, a distributing divider at the base of said tubular element, a series of superposed density classifying elements, means for discharging and. receiving the classified material and a movable surface arranged to press laterally on the column of Water below said superposed-density classifying elements for the purpose of imparting pulsations of small amplitude to the column of water and thereby gently oscillate the material during the classifying operation.

'In testimony, that 1 claim the foregoing as my invention, I have signed my name in presence of two witnesses, this April third RENE EMILE TROTTIER.

Witnesses:

Li'zon BRANDSTETTER, CHARLES Gun.

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