US927283A - Metallurgical furnace. - Google Patents

Description

R. G. REILLY.

METALLURGICAL FURNACE.

APPLICATION FILED A1311. s, 1909,

Patented July n 1909.

R. G. REILLY. v METALLURGICAL Pmmwg; APPLIUATION FILED APR. 8, 1909,

Patented July 6, 1909.

4 SHEETS-SHEET 2.

mzss.

I R. REILLY. METALLURGICAL FURNACE.

APPLICATION FILED APR 8, 1909.

Patented July 6, 1909.

4 SHEETS-$31131 3.

R. REILLY.

METALLURGICAL FURNACE APPLICATION FILED APR 8, 1909.

927,283. Patented July 6,1909.

4 SHEETSSHEET 4.

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UNITED STTATES 1?A@.llilll$llllOFllllQlllE.

ROBERT G. REILLY, Ol CORONA, lilWi YORK, ASSIJNOR T0 NORTH AMERICAN REDUCTIOll COlilP/XNT, A (lOl'rllPORATION OF ARIZONA 'lER'RITORY.

METALLURGICAL FURNACE.

To all whom. it may 007mm:

lilo it lh m'o that .l, lion am G. 'llmLLY, o fill lzill ol tho llihilioil States, residing; at Co 'oihi, in lzho couilifiy of QllliIH'ISlUlll Ella-lo of New York, hove ihveiolmil cm'tahi now and useful lm'pi'ownnentsiin l'illolollurg iool F111" hows; mill ll. (lo lwrchyili-aolzlro tho lollowing to ho lull, clear, and mm vl ilosg iption of tho invention, such as will enable otllors skilled in tho m't to which it {w im-talus to moliio and use the Salim.

This invention i'olzl'b as to inotollurgicol fur 1121003, owl has for its ohjoot tho proilucticm of a loi'nmro which. will onohlo the metal in tho on to ho converted ilil-U small shot or nodulos, \v'ithom llio hill of lluixing material, and one which will ho useful io'r booting ores in go'heml or filly other si'zhsmiicos wl'iiol'i it may ho doesinnl. to" iQlQzmlL li'ilh llw and other Ullji in 'viow tho in'vmilyioh con: in tho hovel ooml'lhizilions of Paris ml ool lflil oj oohofimotion mom lolly llo'i'ol'oli'l'fim" (lli'BQlOFVNl ll lflll fllllffi larly point-oil out in the (Jill-l1 m llolm'lhig 11o liho wicom';mnying" ih'awings l'omqning 2L pm; of this specification zlligure l ro nosflnt-s on devotional vii-W oi tho fur- :imco. ldig'. iii sectional phm viow ol the Fig.

"Jkillfill may he limolloll o sluilia'ihlo hloi zoi' hot- 1 .omil ole'vlytional Vll-SW of this con oho of the huillzihly z'ilzmip il pipe 8 whence it pawns into tho coimoljstioh 9, thence through tho longituih'm lly niu'l'vmg pipe ll) into the hollow I'QClP'lj'Qi bars 11 providoll with the poll" ling; g;

12, ahcil finally limls its Way into l-ho lilHnlJuS tion chamber 5.

Tho gmto lTill'E ll consist of the hollow motlmgitihu' pieces, shown in plan View in Fig. pipes or rods 13 with o driven by on ecoonti'ia 1 power shall 16.

2, and are commuted hy the n occm'ltrio rod 14 5 mounted on the The rod or pipe l3 posses throu 'h a suitable slmfiiing box 1'? onol the O o I l r l PIPO 10 roolpiocotos lxh rough. pair of smiling boxes 18 and 19 as shownl l'lhoro may ho its;

grate ba'lfS l1. and.

drowhiig's have o'i'o lml'izoinlaol sup t ht than. owls upon shown in plon wow and ono of Whii'his show n in elevl'lf owls of limo lo Wt voi'liiool mils mlsfil? ol' lzvors 2%: suiloigily supported which. may be a ljusl eil along tho loi''l's 236 {Mill tl'ieioby misc the longitudinal. lMM'S 2i. M'Hl Willi them tho supporlinghora ill Mill grate "Wm-(ls, the constl'iwtioi'l j oxlont. In olihol' not llGSGl 1g; on ho grails ljioi's oil of tho whipi'oolilhlg liuhmel3 and ill and tho sliullihg hoxvh 'lhi'ough "which 'ljil'wy pass,

owl. l' lll l'flll f pormits ll; moi-o li'ooly n ipmulilo l1 lho hollow of tho minim may ho lliiooinleil nluo i-lizill lh'lppoi ol'volmi lhilg 2:14 and lvhizi poii'ol' shall l (lGlYVCl'h mio the loll l olms v :a'llm'y limiting; .lUlI- H, pipe ll 1 in Fig. and lay mellow tho Tho 'WllllS ol l ho tho vill -Jo 4H l'lhe i'l'ir Mil ihrrrc they be several pipes S joining the pw t 6 end the connection 9, end in Fig. 2

. are shown tn"). Also there may be a e 4-4- oining; tlicsc pipes 8 as shown in igs. l and The tops of the supporting bars are preferably rounded, in order thst the grate burs may slide the more easily l5 thereover and the said grate bars are provided with holes 45 through which the ore may drop into the hopper 30 as best shown in Figs. '2 and 3. They are also spaced somewhat sport in order thet the ore may drop 0 be Ween them.

So far as now explained, it will be clear that the tests 12 of the reciprocating grate bars will serve to thoroughly stir the ore and. at the same time, to deliver air into intimate contact substantially with ell the particles thereof. In other WO1(lS, the ore in the combnstion chamber 5 will be thoroughly and constantly stirred While air is evenly end constantly distributed throughout its mass. There is no flux put into this ore and the temperuture in the combustion chamber 5 is kept below the melting point of the ore, but above the melting point of the metal carried by the ore, the result is that the oxygen delivered to the ore will ignite the fuel in the chamber, and it will also serve to carry off more or less of the ignitible constituents of the ore, there by leaving the metal in the individual lumps in the state of shot or small nodules. If at the same time it is desired to furnish air onderneath the grate to increase the combos tion, the valve 4-1 may be manipulated and the temperature thereupon ruised.

In some ores there may be individual psrticlos that are not thoroughly shotted, and it desirable to carry these lumps or particles through c second treatment, and even in some ores in order to complete the process, it is son'ictinics desirable to curry them through such second treatment. In either case the discharge psssugo 38 may be caused to do liver into on duxilisry heeting furnace 39, any ore that needs further treatment. This y uuxilisry furnace is provided with a central receptacle which receives the ore, and the walls 51 of which are provided with the perforation 52 through. which air in the air churn ber 53 enters the receptacle 50. The sir is received into the air olminber53 through the passage 54 which may be suitably connected with a blower or other source'of air pressure. The air entering the receptacle 5G can ried upwardly throughithepipe 55 and into the ck 3 oi the main furnace or oi. course it u'isy, he delivered in any other suitcble rnenner. The ore from the receptacle 50 is dlschargcd into n passage by means oils plunger 61 operated by the connections 62 and 63 joined to the crgink or disk 64 mounted on the power shaft 65 and such connections are preferably supported by a swinging link 66 as shown. The ore after-having been delivered into the passage 60 may then be discharged into suitable cars or other receptacles, or if desired, it could be, of course, carried through a third treatment.

67 represents a horizontal support of the auxiliary l'urnuce and 68, a. vertical support therefor.

The operation of the furnace will be clear from the foregoing, but may be briefly summarized as followsz-0re and sufficient l'uel such as cool to maintain the necessary temerature, are led into the combustion charm lier 5, wherein the ore is continuously stirred by the reciprocating grate bars and tests while air is being deliveredthrough said teats into intimate contact with said ore and throughout its mass. The ore While being thus treated is allowed to dro through the openings 45 in said bars on through the spaces between the some into the hopper 30, whence it is delivered by the plunger 32 and passage 38 into suitable receptacles, or into the secondary furnace 39, forfurther treatment. I

The temperature in the combustion ch sinher is so regulated that it'is not perrnitted to rise'high enough to melt the-ore, but yet is maintained sufliciently high to melt or to shot or nodnlete the metoll carried by the ore. Alter the ore is thus nodulnted, it may be passed through suitable crushing machinery and the metal recovered in any suitable manner.

It is evident that the arrangement of parts and details of construction may. be varied by those skilled in the art without departing from the spirit of this invention; therefore, do not Wish to be limited tothe features disclosed except as is required by the claims.

1. ln s metallurgical furnace, the combination of a feed chamber for-the ore; it comhustion chamber; s movable rote mechanism at the bottom of said combustion cho1nher, adopted to support the ore; and means to reciprocate said. grate mechanism while the iurnu'cc is inoperction, substantially as described. 1 p

2. in u metallurgical iumsc'e, the con"hination of u bed chamber for the ore; n o robust-ion cl. her; s movable rate macho-rs lent at the bottom of said combustion GlUHZ- ber provided with perforated tests, adapted to support the ore,- meuns for supplying air to said tents; and means to reciprocate sold mechanism while the furnace is opion, subs intiztlly described.

3. in n momllurgicui furnace, the coinbi nation of a feed chamber; a. combustion chamber; a hollow reciprocating ate bar provided with perforated teats, aifipted to support the ore; and means to supp] Y air to said teats, substantially as descri )e 4. In a metallurgical furnace, the cfimbination of a feed chamber; a combilstion chamber; a holloa reciprocating grate bar provided with perforated teats, adapted to support the ore; means to reciprocate said rate bar; a jacket in which air may be heated and means connectedwitl'i said j a'cket to supply air to said teats, substantially as described.

5. In a metallurgical furnace; the co1nbination of a stack; a feed chamber; a combustion chamber; an air jacket surrounding said combustion clnmiber; a plurality of hollow grate bars at the bottom of said combustion chamber provided with perforated teats;

connections between said air j acket and said 7 hollow grate bars adapted to supply air to said teats; a hopper; and a discharge passage for the ore beneath said hopper, substantially as described.

6. In a metallurgical furnace, the combination of a stack; a feed chamber; a combustion chamber; an air jacket surrounding ,said combustion chamber; a plurality of hollou grate bars at the bottom of said combustion. chamber provided with perforated teats; connections between said air jacket and said hollow grate bars adapted to supply air to said teats; a. be per; connections )y which air from said j aclzet may be led to said combustion chamber through said hopper; and a discharge passage for the ore beneath said hopper, substantially as described.

7. In a metallurgical furnace, the combination of movable grate bars adapted to receive ore thereon and provii'led with bcarings; and means by which the weight of said bars and ore may be taken oil the said bear- 'in qs while the said bars are being moved,

substantially as dcscribcd.

H. In a inctallurgrimll'urnace, the combinationoi rcciprocatin hollow grate bars provided with bearings; means to reciprocatc said bars; adjustable means to relieve the pressure of said bars on said bearings while the lurnacc is in operation; and means to supply air to the ii'itcriorol' said hiillov bars, substantially as described 9. In a ll'll'lffilllllgfll'fil Furnace the combi nation of reciprocating hollow grate bars rovided with.perforated teats and with )earin s; means to-reciprocate said bars; adjustab e means comprising a u'cigrhlcd lever to relieve the )ressure of said he on bearing while the furnace is in operation; air jacket; and means connected to said jacket adapted to supply air to the intcrier of said hollow bars, substantially as de scribed. i

10. In a metallur nil furnace, the combination of a stack; a. g rd chamber; a combua tion chamber; annir jacket surroundiinr the combustion chamber; a plurality of hollow grate bars provided with holes 45 through whicli ore may pass, and with pcrl'ora teats; connections between said bars in jackets; a plurality of su 'iportimr bare l'or said grate bars; a p urality ol' levers provided with adjusted weights adapted ta raise said grate bars; a hopper beneath said crate. bars; and a discharge chute below" said hopper, substantially as described.

"11. In a metallur ieal furnace, the conihi-- nation of hollow movable, grate bars pro-- Vidcd with 'icrloi'alions adapted idea air in intimate contact wilhlhe ore iii in said bars are moving; means in more said bars while the furnace is in operation; means to supply air to said bars; a 4* charge p sage' and second beating hirnace, ii which said passage delivers, substantially as described.

12. In a metallurgical furnace, the coiubi nation of hollow, movable, grate bars pro-- vided with teats having pcrl'orations adapted to supply air in intimate contact with the ore while said bars are moving; means in more said bars while the furnace is in open ation; means to supply air to said bars; a hopper; a discharge passage; a reci rocating plunger in said passage; a scconilheating furnace provided with an air chamber; and a heating chamber in said l'urnacc into which. said passage delivers, substanlially as described.

In testimony whercoh I allir; my signal are in presence of two \flll'IfiHNOl-l.

lilllllbilP-(l. lii llliii i' Witnesses:

Aiinnn'r N acre, 'Nnwatt Bmss,

ii li t ll Till

ll ll

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