Process of separating and cleaning coal and other minerals
US RE11334 E
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5 sheets-sfieen 1. 0. LUHRIG.
' PROCESS OF QBPARATING AND CLEANSING GOAL AND OTHER MINERALS-i No. 11,334. r Reissued May 9, 1893.
' 6 Sh eets-S11eet 2. 0. LUHRIG. PROCESS OF SBPARATING AND' CLEANSING GOAL AND OTHER MINERALS.
No. 11,334. Reissued May 9, 1893.
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. PROCESS OF SBPARATING AND CLEANSING GOAL AND OTHER MINERALS. No. 11,334. I Reissued May 9, 1 9a.
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PROCESS OF SBPARATING A ND CLEANSING COAL AND OTHER MINERALS.
No. 11,334. ReissuedMay 9, 1893.
y 5 SheetsSheet 5. 0. LUHRIG. A PROCESS OF SEPARATING AND CLEANSING GOAL AND OTHER MINERALS.
Reissued May 9,1893.
[11 [11 'mmmuk UNITED STATES PATENT OFFICE.
CARL LUl-IRIG, on 'DRESDEN, GERMANY, AssIenon, Isr- MESNE ASSIGNMENTS,
TO THE LUHRIG COALWASHINGCOMPANY, or WEST VIRGINIA.
PROCESS OF SEPARATIN'G ANDCLEANING COAl. AND- OTHER MINERALS.
SPECIFICATION forming pm of ReissuedLetters Patent No. 11,334, dated May 9,1893.
. Original No.474,022, dated may 8, 1892. vApplication forreissue filed December 29. 1892. Serial No. 456.711. Patented in Germany June 12, 1885, No. 34,944. and in Englandilnne l8, 1885,1lo. 7,399, and April Z8, 1888,110. 6,341.
-. To all whom it may concern.-
- Be it knownthat I, CARL IIi'IHRIG,'a subject of the Emperor of Germany, residing atDresden, Saxony, German Empire, have invented 5 a new and useful Process of. Separating and OleansingOoal and other'Minerals, (for which LettersPatent were granted to me in ,England,-
dated-April 28, 188 8, No. 6,341, and June 18, g 1885, No.7,399, and in Germany, dated June 10 12, 1885, No. 34,944,) of which the following is a specification.
. This'i-nvention relates to novel means and apparatus by which a succession of operations can be automatically carried on for the purpose of screening and washing coal and other minerals-and ridding it of foreign matter, or shale, slates, and other incombustible substances, and to automatically obtain'coal or other products of different sizes, as fine coal, .coarse coal or nuts, a middle product or an intermediate kind of coal, py'rites, with which some classes of coal are often permeated, and the sludge or schlamm produced by washing. In connection with'the appliances is a collector for sediment; and flocculent matter contained in or taken, up by the.
water, so that the water is collected in a clear state and returned to a reservoir for reuse.
"The invention will be understood by referonce to the annexed drawings. K
Figure 1, is an end elevation, partly in section, of a structure in which the several features of the invention are indicated. Fig. 2, is a side elevation; Fig. 3, a plan. Fig. 4, is a view, partly in elevation, and partly in section, showing certain details of construction hereinafter described. Fig. 5, is a plan showing upon an enlarged scale, certain details of the apparatus.
The coal or mineral in trucks, trolleys, or corves, preferably on a line of metals A, is
shot therefrom to and upon suspended grat-.
ings or'vibrating bars or shaking screens 13 and B, through which the pieces to 'be operated on are passed, the larger pieces passing off from the ends into trucks andbeing usedv as lump coal. The screened material then falls intoa pit G, from which, by means of the endless chain of buckets or elevator D, it is d to uppeij part of the 1 building,
drums H I J KL, one within the other and with meshes of 'difierent degrees of fineness,
the innermost drum havingthe largest meshes,
so that the larfi1 st particles will pass from the central dru H into'a chute M, the next size from the druml into the chute N, that from Jinto the chute P, from K into chute Q,
"and that which is of a very fine character from Linto the chutes R RR. The drum just referred to is of tapered form and is carried by one shaft S, to which. rotary motion can be communicated in any known manner. The concentric drums or screensare held at-their respective distances apart by radial bolts connected to the shaft, tubular distancing pieces and nuts holdingthem in position. Theconcentric screens of this drum are of different lengths. Consequently the spouts arrangedunder their outlets can respectively receive the coarse and fine screened Inateriah From the chutes or spouts M N P Q the coarser grades of-coal fall intoji-ggers or washers T U V V, respectively. The fine particles from the spoutsR R R fall, respectively, into the three jiggers or washers X Y Z. All thesejiggers or washers have a partition a, and the coal falls upon perforatedfloors or sieves I), arranged on one side of the partition a. The other sides of the jiggers ,or washers have plungersor pistons c, as clearly indicated in Figs. 1 and 4, the plunger-s or pistons 0 being worked up and down by eccentrics on the shaft d, and the water for washing is supplied through a cock or pipe e. The lower part of the 'jiggers or washers is of tapered I into a, pit hf, from which it canbe removed ioo by th e'eleva tor h to hopper h for discharge into trucks. The washed coal passes from perforated floors or sieves I), through the upchute 7.. An adjusting slide j, behind which 1s a fenced plate It, reaches almost down to the sieve, so that the heavy material orslate shall pass under the plate on itsw'ay to the IO lower opening to the worm or conveyer Z.
. The trough of the conveyer or worm is divided by a plate m, Fig; 5, and the wormpart of which is right-threaded, the other part left-threaded, E ig.'5.takes the shale, slate,
and intergrown coal from the washers or jiggers T U V W to the elevators n, which deliver the'stufl through a spout to the crusher g, by which the intergrown coal isopened up by the crusher. "The crushed coal then :0 falls through a spout to' jigger or washer Z and is treated in exactly the same manneras that of the other jiggers, but giving an intermediate kind of coal and that from the washers or jiggers X Y Z to elevator 11. zg'Thefine heavy dirt from jiggersXY Z Z, should it contain pyrites, requiresa distinct washing to extract the pyrites therefrom,,and this is effected in the washer or jigger t, to -which it is led through spoutsr r ,r r and s,
: which j igger isprovided with a piston or plunger ina similar manner to the jiggers or wash:
ers before mentioned. The clean-washed coal passes from the chutes 6 before mentioned, to
suspended shaking drainers to, to which an- 3 5 other supply of water is furnished by jets 'v v for brightening the coal, the larger pieces of coal falling into the hopper wand the finer into the hopper ac, said hoppersbeing provided with gates which when opened allow of c, the coal to be shot intodifferent trucks or trolleys. The water from i and 11 passes along with'fine sludge through the lower drainer into a recepta'cle y, from which they flow into a, and through thedrum A into sludge-0r 5 schlamm pitB'. Thefine washed coal from the jiggers or washers X Y Z also passes into a drum A." by the spout C. This drum A is composed of very fine mesh, so that the fine sludge passes through it into the sludge-chan- 5o nel B'. The particles of coal, passing out from the drumA, fall into a receptacle from which they are lifted by an endless chain of buckets or elevators D and discharged into a hopper E. The sludge-pit l' is compara- 5 tively deep, for the subsidence of the rough solids contained in it, which solids canjbe removed by the endless chain of perforateddrainingbucketsor elevator F intoa hopper G". This elevator works slowly,'so as not to create much agitation on the surface of the water, the level of which is maintained to a given height. In connection with the upper part of this pit I is the long channel B ,in
which an endless chain of boxes H moves.
, The boxes form attraction-plates for floccu lent matter held in suspension in the water to adhere to them, and as the boxes'reverse' the channel they scrape the light particles that have settled on the bottom into the sludge per of the two openings in the jigger or washer, as shown on the drawings, into the pitI', the clarified water passing oh by a changal pump "K derives its supply, to be used again. The centrifugal pump also furnishes water to the drum F,"the washers T U V X-Y Z Z, and-the pipes 1: 0. I
The plates 11' may operate as attraction plates and scrapers combined, or as scrapers solely an dthe same are caused to move gradually so as to allow the flocculent matter to settle to the bottom of the channel B.
Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed,
separating the particles according to size; second, hydraulically separating the particles according to specific gravity; and third, crushing the larger of the heavierparticles or midnel'into-the Well J, fromwhich the centrifucombination, consisting in-first, mechanically die productthussepafated, and againhydraulically separating the constituents there-- .of according to specific gravity.
3. The hereinbetore-described process of treating mined or broken coal containing more or less foreign matter in mechanical' mixture, consisting in subjecting the mass of suchtmaterial to'a rotary screening .action, and thus centrifugally separating the mass into particles ofudiffere'nt sizes and discharg- IIO ing them into separate compartments, where the particles are washed and further separated, the lighter from the heavier, then crushing the larger of, these heavier particles, .and separating therefrom 1 any remaining III-5 lighter material that may have remained intergrown or in natural combination therewith ,by washing the crushed mass and recovering said lighter material'from the water used, as" fine coal orsludge -matter, substantially as and for the purposes set forth.
4'. In a machine forseparating and washing broken coal, the combination of the following-named instrumentalities, all operating and coacting substantially as described name- 1y: a'centrifugal or rotary screen, as F, jiggers or washer-compartments for receiving the coalscreenedthrough said screen, a conveyor orelevator for removing theheavier material from the jiggers, a crusher for crush: ing said heavier material, and a jigger or washer-compartment for washing the crushed 5 and, recovered, leaving material, whereby different sizes of coal are sorted from the mass, separately washed and recovered, and smaller coal separated by crushing from said heavier material, washed, as a residuum sludge or sedimentary material, substantially as and for the purposes set forth.
5. In a machine for separating and wash-- ing coal, the combination of a sediment collector, a water-clarifier, and a screen drum of. finely-graduated meshes, whereby the sludge or residuary sedimentary material is recovered and sorted into diflferentsized partieles, substantially as and for the purposes set .15 forth.
an endless series of the ehannel all the scrapers of the series being wholly moving the separated sediment and. elarified water,substantially as described. In witness whereof Ihave heretosigued my I name, in the presence of two subscribingwit nesses, this' lst day of September,-1S92.
6. Ina maehinefor separating and washin g coal, the mmbination of a sludge channel,
travelingscrapers within submerged and means for re- CARL UHR G, Witnesses: R0131. M. HOOPER,
' W. M. KIRKIIAM.