US871477A - Method of feeding reverberatory furnaces. - Google Patents

Description

PATENTEDNOV. 19. 1907.

.A Y H. L. CHARLES. METHOD OPTEEDING RBVERBBRATORY FURNAGES.-

APPLICATION FILED MAB. 26. 1907.

NTOR

By Allomey,

V INVE zwi 6 SHEBTS-SHBLT l,

WITNESS ES:

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METHOD 0F' FEED APBLIOA'TIN FILED MAB.. 26.@907..

WITNESSES:

, '.PATENTBD Nov-.'19, 1907 H. L. CHARLES. A um RBvBRB-ERATORY FURNAGEs PATENTED Nov. 19, 190'?.

'H. L. CHARLES.

METHOD 0F PEEDING RBVERBERATORY- PURNAGBS,

APPLICATION FILED MAR. 26. 1907. y 6 SHEETS-SHEET 8.

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- i acitize t .fmay cou cem` g eitknownthr t l,v HENK): LEWIS C uARLEs, niof tl 1e- 'U nited'States ofAinerica, re siding at Saltlialge City, c `)uutyoi` Salt Lake, 5 a11d..-`tate.of,Utah-,.have invent-ed certain Demand usefullinproveinents i n Methods of ,Feeding Reverboratory .Furnaces,^of `which f the following is aspecilication.'

Myj-inv'ention vrelates to an improvement in niethodof feeding reyerberatory smelting furnaces'andis intende-dto provide a' means -gfgrincijeasing the capacity oi a furnacewitl' '-a savinggoftlabor.and fueland at the saine timeipreserving'thclfurnacerom corrosion. This l accomplishf byan improved method or systeniof ecdiugihe charges into the fur- ;to;the-present tiir'iezithasjhcen the uni'- r "versalvpractice to putan -alnountofcharge intojfit-lfcqiurnace suflicient to "cover the 1 heartht over severalinches deep. This is 4dfi-in onechar'ge at or near the. center artlifythrouglr large slots -or .drop t ofidedihf thefroof of-the, furnace. he doors tare hen/opened .and the 'charge ofsmeltheforenbther. charge can he rece'iedastheftemperature is "reduced from f practiceto tap .out fall o f theJnolten sieg and m'attein?brrlertofettle.the wallson the inffr-fsidejof.. he;hearthftrhere corrosion takes "pl/ceQ-.o "inv-:to theY molte-ri. hath'coming in 3 5.E.quired` atjiiitervalsof from :one to ten days ivteriii tfsgsually donc with barren silica- (Si Another great detmnent caused by a uiiis'that it. allows the .freslriron Fes) to '-1 comey fin'v contact with the silieain the fbdtt'oin of4 the. h( 'atl" andv corodvlifte .h',ti'n ie, 'with the result thatin ai fewg motiths'itfis .worn sothin that itmust beA prolonge ,zj-1 .labor "and, material .saved i "t increased ioli-iageohtained :is .the

Speciicaton of Letters Patent. l f j Mam... filedmrch 26. '1907. se in Np. 364.680.

- UNITED STATES PATENT OFFICE;

HENRY LEWIscHARLEs, or sALrLAKE c iTY, UTAH, 'AssreNoR or ONE-.HALF 'ro FRITZ i; AUGUSTUS-HEINZE, or BUTTE, MONTANA.

maison or rrnmensvsnsneroxy FURNACES.

Patented Nov. 19, 1907.

ing them' in oftener and at various places over the hearth with the furnace'l kept atfull )n feeding, leveling, charges and fettling will vbe accomplished and a-savmg of heat,` as'the present large cliargeshrnig the furnace'besults.

rufen-nce to the accompanyingsix sheets lof ically part of' a reverberatory fr lrnac'e. The

low the smelting temperature whereas, un-h der niy system, a continuous operation re'.

My inrention will be best understood by heat all the time, the tonnagewill be com'- pounded several times and a saving of labor drawnigs which fully illustrate my invenfj`v tion, representingmore or -less diagram1nat-. i

llue end, which isofordinaxjy and well known.. f-

construction, has been omitted. i

the. top .of the hearth and center of a furnace,

showing luy invention, particularly the posielevation of' the lower side of Fig. 1. Fi 3 on the line-.4 4- Fig.1. Figs. 5, 6, 7, &f8`,

pers ont-ofthe furnace bed.

.f-iO-jf is provided With` aj hearth v--11-Y bridge -12-' over which-Fass the gases fromthe-lire' box .--13` i sired construction.

'tinuous feeding 1 places, over the hearth-Without interruptin'v the smelting or reducing the ltemperature.

.or trough *J4-- extending around the e ge of the unace 10-.

through dropping,r very smell charges at fre-- quent intervals, or continuously,- at venous Walls und protecttiem trom corrosive 'ac-f tion. -The raw or celclned ores .l pro vose to 'Feed tl'i.1 -ugh a series of small holes, ocated l This l accomplish in the following manner.`

In the drawings Figure lis aplan of f '75 i tion of thetrpugh-like hoppers. Fig. 2-1san is alngitudinal A section taken. on the. 'ne' i 3-'.-3. Figi-.Lf Fig. 4 is a. crosssection taken'.

illustrateon an yenlarged scale-my devicswr feedingsinall quantities of ores from the hop- :v

Referring to Figs. l, 2'& 3,1 thefrurnace..

nally escapingfl'roin thellue at theopposite end(not/shown),` part of the furnace may be o1 any de-'4 Y '9o My invention .consists in a-praetically conof ores to the furnace f'.

. propose'to -feed .silicious lmaterial or oresl located near the edge of the hearth, sc that. .l

These ores will fall close-tothe side-walls of the furnace--10 110 making a diam. or base sloping towards the i illustrated in Figs. 5, 6, 7`& 8. The swinging hearth- 11 'preventing the molten slag, matte, prany of the sulfide from touching the brick liming thereby vavoidi all corrosion he raw or caleined ores willbe fed' into the furnace 10 from a series ofgtransverse hoppers or troughs 15 V'lhis arrangement of the various hoppers, -continuous and transverse is clearly .0 illustrated 1n Fig. 1 also the openings of the drop pipes 16- through 'which the ores are fed onto the hearth 11 The hoppers 14 ,and 15 and drop pipes 16 areshown in elevation in Figs. 2, 3 & 4.

i'5' The operation of feeding the ores onto the hearth of the furnace in varying quantities `asrequired, is as follows: The transverse hoppers 15J- are arranged in' pairs, and .between each pair a shaft 17 extends 2 0 across the furnace -.10-. The shafts 1 7 "hate 'a rocking motion transmitted'from an eccentric on the head motion 18 and are connected bya series of levers 19: and links 20. IBythis arrangement-.the shafts 17 all lhave the same motion; lhe small :drop holes 3() inthe roof or main arch 3lof the furnace l0-'are partially covered-by 'fire brick slabs 32' haring P un- ,slid e, back or forth, feeding more or less ores throughthe openings 33 and holes 30 onto the hearth 11- by means of therocking motion transmittedthroughthe shafts 17.

'35` The plungers 34 areA provided with rods 35- and stop ins 36-. Suspended from andfkeyed to t ie shafts 17, are arms '37 one for each feeder. Connected to arms 3.7 are swinging arms 38 with 410 projections 39 at their outer ends.

fhese projections 3Q- have slots 40 and vdro vover the plunger rods 35 be- 4tween t e stop pins- 36j 'It is evident that when the projection 39 reaches 'either of the stop pins 36ton. the plunger 4rod B5-'any further motion will be transmitted to the rod and plunger 34. flhe amount-of travel ofthe plungers 34-. is regulated byinsertin' or removing filling pieces 41 'shown on eft hand side of Figs.

6 & 8. When all the 'ieces 41- are in place, the movement o plunger 34 will e greatest and as they are removed, the effective movement of the plunger 34- is decreased. 'The ore drops on e'ach side of the plunger 34- as it rests on the fire brick slab 32- and the sliding movement of the plunger 34, back and forth, shoves the ore oIgl the slab. 32 and into the furnace 10 .l Brackets 42' are riveted to the drop pipes 16 and support the plunger rods 35.

In order to .stop two or three feeding lungers without interrupting any of the ot ers,

-i the following arrangement is provided and is 66 is attached.

arms 38 are supported by hooks 43- pivoted to dogs 44- which` are attached to a shaft sup orted in the bracket 42. This. shaft is mag two sleeves or pipes 46- 'and 47 Fig. 5. Each of these shafts is capable of individual rotation by handles -=48 V on the outside of furnace 10- and has three'or more dogs 44. attached. By turning down a handle 75 48- the shaft 47 is partially rotated, thus raisingv dogs -44- and hooks 43. The'hooks 43 elevate the swinging arms 38 w ith projections 39 and slots 40 clear of the plunger rod 35 and pins -36 80 and all movenientof the plunger --34 ceases. See right hand side of Fig. 5. The above arrangement could be changed so that' each feeder could be stopped or started independently of all the rest, but this would i'e- 85 quire more handles and pipes. The' si'licious orcs are fed from hoppeis 14 in much the same manner, Figs. 7.& 8.

Along each side of the furnace 10-v is a rocking shaft 49- and 50 which is oper- 90 'ated frointhe eccentricon the head motion 18- as follows: The rocking shaft l7 nearest thel fire. box 13 carries a bevel-v gear 50- engaging with abevel gear carries a lever' 54 connected to a' lever 55 on shaft 49' by means of a link 56 Thus a rocking motion is conveyed vto shaft -49'. Lever' 55 "link 56 I and lever 57--on shaft, 50, convey this' 100 rocking'- motion to' shaft 5(1- on oppositeside of furnace 10- Fig. 1. There are hangers 58 keyed to shafts 49 and 50 one for each feeder.

`which 5 raised out of contact with theplunger rod 35 and stop pins 36 by means of hooks 61 pivoted to dogs 62 =at' .tached to short shafts S-mounted'vin 110 brackets 64 The shaft 63 carries a counterweight arm 65 to which arope This rope passes over a pulley 67 The weighted arm 65- keeps the dogs- G2 in lower'position 115 when feeders 'are in operation, but when' a set are to be stoppe( the rope 66-1- is touch the molten bath before they become -125 liquid themselves. I have dropped 650' pounds perfsecond byhand for hours atfa time into a furnace to demonstrate my idea,

and have reached acapaeity' of 500 ,tons

smelted .per 24 hours on afur'nace that was 180" e up of a center shaft 45- and 70 This shaft also Pivoted-to the p lower end of each hanger 58 -isan arii'i 105 ulled downy and hooked over a pin G8- his is plainly illustrated in Figs.A 7 8518.' In vthis manner a molten bath of 'from fifty 120 open the weer?? charge with rabbles with a conseing ores into reverberatory furnaces con-.l

slstlng in dropping the same over the hearth in small charges at frequent intervals.

. 2. The Within described method of feeding ores into reverberatory furnaces consisting in dropping the same over the hearth in small charges at frequent intervals and at various places.

3. The Within described method of feeding ore into reverberatory furnaces consistingv in dropping the same onto the hearth through a. series ofsmall holes located in the roof of the furnace.

4. The Within described method of feeding ores into reverberatory furnaces consisting in feeding raw silicious ores between the calcined ores and the edges of the hearth.

5. The within described method of feeding ores into reverberatory furnaces consisting in drop ing raw silicious ores around the edges o the hearth and the calcined ores in small quantities over the/'inner portionof the hearth.-

6. The within described method of feeding ores 4into reverberatory furnaces consisting in dropping raw silicions ores onto the hearth through small holes located in the arch of the hearth near ,the edges oll the hearth and dropping caleined or roasted ores in small charges over the inner portion ofA the hearth through arch of hearth.

7. The Within described method of feeding reverberatory furnaces consist-ing in feeding silica or silicious material for fettling eonsmall holes located inthe under the present tinuously from a hopper or trough extending I around the edge of the hearth and in feeding the Ore 1n small charges over the hearth of the furnace -by any convenient means.

8. The within described method of feeding ores into a reverberatory furnace, consisting of dropping the same through numerous small openings in the roof of the furnace in a continuous or intermittent stream, in such minute quantities that ticles will be molten bath. l

9. The Within described method of feeding ores intoreverberatory furnaces, consisting of feeding the same in in one ormore rainlike streams whereby the ore is smelted immediately Without reducing the furnace temperature.

1U. The within described method of l'eeding ores into reverberatory furnaces, consisting of feeding the same over the hearth in small quantities and at frequent interwils by any convenient means.

.In testimony whereof, l have signed my name to this specification in the presence oll two subscribing witnesses, this 5th day ol' March .1907.

ll lCNltY LEWIS (l lA ltlilCH.

Witnesses lMolt Pwr'r, A. lC. l Mum.

tbe individuel parsmelted before reaching the

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