US1534536A - Concentrator - Google Patents

Description

Nunrrso STATES N herrn raient CONRAD MEYER; OF SAN FRANCSC'O, CALIFORNA.

Application filed September To all whom it may conoci CONCENTRATOR.

Be it known that l, CONRAD M. MEYER, a citizen ofthe UnitedStates, and a resident of San Francisco, county and State ot California,

oit- San Francisco, have invented a new and useful Concentrator, oi which the following is a specification.

The present invention relates to iinproveinents in conccntrators and has particular reference to a stationary concentrator for y separating inetals from ore containing the saine, or troni inill tailin,D

Os. It is particularly proposed to provide a grooved plate constructed in such a Way as to automaticall i eilect a separation o` eral particles troni ore or t the heavier ininroni mill tailings hy passing the inaterial mixed with Water over the inclined surface of the plate and` guiding the heavier particles into longitudinal collecting channels, thence to a recep nele, and the lighter Waste to thehottoin oi' the plate, thence to a Was-te channel.

lt is further proposed to utilize `for this purpose.intersecting diagonal grooves, preterably of approxin'iately s section in the` top .tace

einicircular cross-` oi the plate, the

grooves communicating at their lower ends with the channels referred to, and the de-` livering grooves heing'niade slightly deeper than the grooves traversing the saineso that p articles once grooves follow caught i the course n the delivering of the same Without `neing forced into a `nigzig course.

lt is further proposed guards on either side oi to provide lateral the grooved plate covering the channels previously referred to and controlling the intake area of the cliannels. is a further feature o iny invention these guards are provided with hoods over the discharge ends oit the various grooves so as to 4enlarge the discharge area of the grooves into the channels and to furthermore produce slighty eddy currents at the discharge end otthe grooves whereby inaterial of lighter Weight is prevented troni en ilu tering the channels.

rther objects and ladvantages of i'ny device will appear as the speciiication proceeds.

The preferred forni of iny invention is illustrated in the accompanying drawing, in which Figure 1 shows a topplan vievv oi the saine, Figure?, a vertical longitudinal section through the saine taken along the line II--Il oi' Figure l, Figure 3 a vertical transverse section taken along line Ill-lll of Figure l, Figure a an en d View ot the de- 2, 1924. `aerial No. 735,4f5.

vice, and Figure an enlarged detail vienvv in plan ci' a sniall portion of the grooved plate. lfilhile le have shown only the pre-` ferr-cd 'forni of tlieinvcntion, I Wish to have it understood 'that various changes or inodh. fications inay he inode Within the scope oi'` the claiins hereto attached Without depart` ing troni the spirit oat the invention.

` lily concentrator comprises aboard ll oit suitable diinensicns which has inlaid therein a plate 2 ci heavy glass or other hard yn'iat-erial designed for long vvear. rlfhe top face of the plate is providedv T.vith intersecting diagonal grooves 'forined ot approximately semi-'circular crosslsection. along the side edges oi.t the grooved plate pro vide collecting AChania-ils =l into which the grooves discharge. rine grooves are preterahly iliade son'iewhatdeeper at their dis! charge ends 'than at 'their upper ends, the increased depth preferably starting the longitudinal cent-er line oi the hoard so that each lower end ot each groove, counting troni the center line, is soinewhat deeper L than any one cit the grooves crossing .the saine.

The object of this arrangement is to cause heavier particles caught in th discharge ends oi the grooves to tollenT the path oit the changes ot direction oi! the flowing material in .the grooves and frequent mingling of lcurrents from opposite directions, to increase the opportunities for the rnaterial to he re-sorted and concentrated and tor the heavy particles to Work their Way diagonally toward the collecting channel and for the lighter Waste to he Washed dou/n to the bottoni ci the plate into a Waste channel.

The hoard as a Whole may be inode oi any suitable torin, lout l iind that it is inost advantageous to construct the hoard considerably narrower than is the adopted custoin for riiile boards or concentrators oit this character. @n the sides ot the hoard l provide iianges 6 which rise ahove the level of the plate and which serve support for the two guards 7 which are orined to ine- ITA eline from the top ot the flanges to the surface of the board so as to cover the collecting channels.

The guards prevent any material from entering the collecting channel except through the diagonal concentrate grooves. At the points where these grooves enter the collecting channel the guards are expanded into arches or hoods 8, enlarging the area through which concentrates and water may enter the collecting channels. rhese projecting hoods also serve the purpose of causing eddy currents in the medium flowing past the same whereby the lighter part-icles are deflected :trom the entrances into the collecting channels, while the heavier particles remain practically unaffected.

The guards are preferably made removable and are held in place by a plurality ot spring clips 9 which may be engaged with the guards and the bottom of the board to ellect a clamping action.

rl`he two collecting channels discharge into a single transverse channel l0 tronA which latter the collected concentrates may be received in a suitable receptacle or may pass onto a second plate for 'further concentration.

In use the plate is supported on an incline by and suitable means (not shown in the drawing), and matter to be separated mixed with water is made to .tlow over the plate. rlhe heavier particles naturally work their way to the bottom and are constantly re-mixed and re-sorted by passing over the grooves unt-il the heaviest particles Iinally find their way into the somewhat deeper delivering grooves and are carried along to the end of the same and discharged into the collecting channels.

rllhe slanting guards assist in smoothing the liow of the medium7 and the small hoods ell'ect slight eddy currents at the bottom ol the medium for diverting lighter materials from the collecting channels, while at the same time they allow heavier particles gathered in the delivering grooves to be freely discharged into the collect-ing channels. The guards can be easily removed tor the purpose ot inspecting and cleaning the collecting channels.

l claim l. ln a eoncentrator ot the character describen, an inclined clement having intersecting diagonal grooves with dishcd bottoms and steep remote edges in the 'top lace thereof.

2. ln a stationary conccntrator oit the character described, an inclined element having upon its top face two sets of parallel diagonal grooves crossing each other and each set discharging` on opposite sides into a laterally placed collecting channel.

lnv a stationary conccntrator of the character described, an inclined cleniient having upon its top tace two sets ot parallel diagonal grooves crossing each other, each groove having a shallow section extending Jfrom the edge downwardly to the center and a deeper section extending trom the centei` line downwardly and outwardly vto the lateral discharge end.

el. ln a ccncentrator ot the character described, an inclined element having longitudinal collecting channels along the side edges thercol, diagonal grooves in the tcp face discl'iarging into the said collecting channels and guards over the collecting channels controlling the intuire arca of the same with hoods formed in the guards over the grooves enlarging the discharge arca thereof and causing eddy currents in a inedium flowing over the inclined element.

'ONRAD M. MEYER.

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