US842736A - Ore heating and drying device for furnaces. - Google Patents

Description

N.`842,736. PATENTEE JAN. 29, 1907.

-. E, WEEGE.

oEE HEATING lAED DEEING DEVICE EOE EUENAGES.

APPLICATION FILED BB.14, 1906.

.4 2 SHEETS-SHEET 1.

ijltlifilll@ STATES PATENT OFFICE.

UTLEY WEDGE', OF ARDMOR, PENNSYLVANIA..

@RE HEATNG AND DFQYiNG DEVIE FR FURNACES No. maree.

?) (all whom, it '11i/fry cm1/ecrit:

Be it knmrn that l, U'rLnr Winnen, a eitizen of the United. States, i'esidingin't-Ardmore, Pen ieylrziiiiu, have inyented certain Improvements in (')re Heating' or Drying De- Vices for Furnaces, oi' niliiclithe :following is a specification. My inventief; relates to that class of iurnaces for desufurizing, caleiiiing', ehloridizing, Sac., which utilize the heat oi the rooll or top plate fortlie purpose oi dryingT theore preparatory te the feeding ol' the saine into the working chamber of the furnace, the ohject of niy invention being to provide simple and effective incanti. lor causing the automatic ieedingl ol the dry ore onto the upper tl-bie or shell of the working clininber.

in the ueeeinjmu'iyingr (trainings, lfigiure 1 is a longitudinal sectional rien' ol suilieient oi' the upper portion oi ain ore roasting or de.- sullurizi'ng' furnace to illustrate iny present invention. 2 is u transverse section, on a larger Seele, ul' puit ol` the lui'niiee on the line (L d, Fig'. l. Fin'. j is .fi plan vien' ol' one oi the platee or sect ions el.' the l'urnaco top or roof. 'Fig'. Li is e sectiointl vien' illusti .ting a inodiiicatiou oi' the invention, :ind Fie'. 5 is :i plan view' oi 'the saine.

Se l'ar es the general construction ol' the 'furnace is concerned it niziy be similar 'to many oll those :it present in use.

ln the drawings l l aye only shown the u pperportioii ofthe furnace, l i'epr'esei iupr the sheet-metal outer easing 'uit h refractory lining 2, und 3 representing the upper table oi' shell upon whiehthe ore is i'lvposiied, said ore being; spread or conveyed over this sliel' l by ineens. ol' i'iibblrs, blades, oi' venes carried trai rotating hollow shalt 5, also ]')rotei'led lroin the lnat by nit-ans ol. :t rel'rzieio'i'y sheathing t3.

The top plate or roof ol' the furnace is coniposed oi' metal plates 7, preferably of segi'- mental forni, as shown vin Fig. 25, these platt-5 being' provided on the under side with radial i stiilening or streng'ilu-nniir ribs n. the ribs :u

Specification of Letters Patenti`- R Application filed February 14, 1908i Serial let SUELOS/1i Patented Jan. 29, 1907.

tcip ol' the vlire-brick lining 2 of the furnacecnsinu. Where the heat would be in excess ol' tiiii required or desired in drying the material, the top of the furnace may be constructed in whole or part oi" brick, which Will diminish the ainount of heat applied or absoi'bed ir.. the heating and drying' process on top ot luinnce 'i'.'c metallic portion of the furnace-casing is carried above the roof-plates 7, and the utter are provided at their inner ends With llanejesl u, whereby there is forined onthe reci' en annular cha-'inber or trough for the reception oi the green ore which is to be dried bur -10 oi inverted- L shape being secured to an u pwerd continuation 11 of the central rotin shalt 5 ofthe furnace. es shown 1n Fig.

l, in order to cooperate with. the flange 9 of` the .wolf-sections and with the muss of ore on the root' to i'orin'a seal and prevent the es- -iipe oi euses or vapors troni the Working clui'uiber oi the furnace et that point.

ln one or ii'ioi'e of the roof-sections '7, ad 1aeeiit to the inner 'l'oi'nii'izl u. 'leed-opening 12, with which copei'zites a bell-valve 13, suspended by a rod, lirli', chain, nire, or equivalent device from one izrni ol' a lever 14, which is pivoted to a. suitable bearing on thetop oi thereof-see- 'tiozfi and has a eounterweighted arni tending to iioiiiizrlly li'l't the bell-valve 13,.end thereby lese the leed-opening 12,

Secured to and projecting from the'upwird eentiniuition 11 of the central shaft of thel'urnai-e are one or more radial arins l5,

which are provided with depending blades or by stirrer-arnis 5, uhu-li :iro secured to a reni venes 1G, so disposedas to stir the` mass of ore deposited upon the root ofthe furnace zuid gradually feed the saine inwardly or toortion of the latter, is

ward the 'center of the furnace, the further.'

supplice. et green ore being fed onto the roof at a point adJaeent to the outer Wall morder 1 that they n'u'iy be slowly traversed across the roo'l' :ind dried by the heat of the same during the edges ol' llie ilnte being' also used Vlor sef curing the adjoining' plu-tee orsections oi the rool' together, so that when they :i re properly united they vloi'ni :t rigid structure whose peripheral portion is;

properly mounted upon the their passage, quick drying being insured when the niet allie root-plates 7 are directly in contact with the heated gases and products of combustion in the upper chamber of the furnace. The feed-openings may be located around the outer portion of the drying-Hoor,

openng is only opened -for a length of time on each rotation of the central shaft of. the furnace sufficient to permit the desired iniiow of material'and then closed before any material volume of furnace-gas has had an opportunity to escape. Such opening is in the resent instance effected by contact of the owerportion of' the radial arm 15 with the back ofa finger 17 on thelever 14, which iin-` ger, as shown in Fig. 2, normally projectsv into" the path of the arm 15, and when struckby the latter is depressed soas to open the valve 13 and hold it in suc-h depressed posi tion until the arm passes out of contactwith the nger, whereupon the valve is raised to its normal or closed position by the action of the counterweighted arm of the lever, ythe two positions being illustrated, respectively, by full and dotted lines in Fig. 2.

Other means of attaining theobject of my invention will, v however, readily suggest themselves to those skilled in the art, and in Figs. 4 and 5 I have illustrated one such modificati0n,`the valve in this case consisting ofV a disk 13, axially pivoted upon the top of one of the roof-sections and havingprojecting arms 14a, which are successively struck and moved forwardly by depending pins or lugsl 15u on the rotating flange 10. \\"hen the bellvalve 13 is open, a flow of powdered or gramilar ore through the opening 12 and over the valve is effected by the action of the adjacent blades 16 on the arm. 15, and this serves t0 seal said opening so effectively as to prevent any material escape of gases through the same. Vvhen it is desired to arrest the feeding of' ore into the furnace. a. hook 1S at the outerv end of a chain 1),depci'uling from the finger 17, may be engaged with an eyey 20 on the valve 123 in order to maintain -suc-h yfinger-in a depressed 'position where it will be out of the path of the arm 15, and will not therefore, be struck and depressed by said arm as the latter is carried around with the f rotating shaft of the furnace, and in order to attain the same result with the valve shown `in Figs'. 4 and 5 one of the arms 14 of said valve may be piveted, as at 21, so ,is to bc thrown backwardly out of the path of the lua's.t5.

I claim- 1'` An orc-roasting or like furnace having a metallic top or roof plate composed ol' radially-ribbed segmental sections secured together and resting upon the walls of the fur- 'arm thereon having stirring vanes or blades for feeding the orefrom the outer' or periphe eral portion of the root-plate toward the center of the same.

3. An ore-roasting or like furnace having atthe top, a dry-ore chamber, with an opening therein communicating with the upper chamber of vthe furnace, a vertically-movable valve coacting with said opening, and means carried by a rot-ating clement of the furnace4 for imparting movement to said valve.

4. An ore-roasting or like furnace having at the top, a dry-ore chamber, with opening therein communicating with the upper chamber of the furnace,a vertically-mov.- able valve coacting with said opening, an

arm carried by a rotating member of the furnace, and a lever carrying the valve and having a portion norn'ially projecting into the path ofsaid arm so as to be struck and moved thereby.

5. An ore-roasting or like furnace having at the trip, a dry-ore chamber, with opening therein communicating with the upper chamber of the furnace, a vertically-movable valve c-oacting with said opening, an arm carriedv b v a rotatable member of the furnace, and a lever having a portion to bc .struck by said. rotating arm to move the valve in one direction and an arm provided with a counterweight for restoring the ralvc to its normal position.

ti.. An ore-roasting or like furnace having at the top a dry-ore chamber with opening therein communicating with they upper chamber of the furnace., a movable. valve for said openingmeans carried by a rotating member of the furnace for moving said valve, and means for freeing the. valve from the control of said operating device.

,7, An ore-roasting or like furnace having at the top a dry-orc chamber with opening therein,communicatingwiththeuppcrchambei' of the furnace, a vert ically-movable valve. coacting with said opening, an arm carried by a rotating member of the furnace and a valve-carrying'lever having z portion projecting into the path of said arm in order that it, may be st ruck thereby to move thc valve.

-and means for varying thc relation of theI valve and the lever. in one of which relations, the lever is held free from contact with the.

arm.

8. An ore-roasting or like furnace having atte top a dryore chamber with im opening f name to this specification in the presence of 'ahereifn lonmuncating witlxolthe u peil!- cham two sbscribing Witnesses. f ero t e urnace, a Inova e va ve o'r saic f fopenig, and means'for-feeding ore into the UTLEY WEDGE 3 opening when the valve is open in order to Witnesses:

seal said valve. 2 K 4- v WALTER QHISM, AIjtestmony whereof I have signed my i Jos. H. Kmnm.

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