US1789474A - Grooved refractory lining - Google Patents

Description

Jan. 20, 1931. H R QRwlCK ET AL 1,789,474

GROOVED REFRACTQRY LINING Filed Oct. 24, 1929 2 SheetsJ-Sheet 1 f INVENTORS @i www@ Patented Jan; 20, 1931 1 i fenoovnn 'nnrnncmomr vitrivrne "Ihisfinventioni relates to linings or'elec tric furnaces and is' particlarlydirected toa grooved refractory liningffor suchfurnaces.

I i RveffactoryV linings 'for lelectric vfn'rna'ces, oi 5 various types arei'of course,A old'and 'well lnnovvn perse. vSuch linings in thcfpastyhave; livvever, generally been n1ade -in one fl the followingways; erst; either by eamping in a plastic 'niass Within'v thefurnace which :hard `1.0 ens 'byfheatingfto form' an irr'emo'vable"lifn"` ying or, `second, ,by placing refractory' fbiji'cks v .i y Q'ITA'iShPeS in' theffurnace and then cerneiting thein ltogether vwith'suitable refractory cef nients.V The `irst type offlinng is vefygllf satisfactory because when lit ,f becomes Sworn;

Y lining is objectionable 'for thefsainevr reasons Y and also becauseioi' the liabilityof such ling ings to chip and crack'orburn out under' sus@` tained high heat 'in the' furnace;vv These lin'- ingsi urthermore,dc not readily lend them-V selves to cooperationjyvith" other 'linings 'of the saine por; different Ltypes as y there is L no I yvayofsecring such'other liningsftherctof f One of the objects'of the'pres'ent'invention is to obvate thefditliculties anddisadvanL tages inherent in lor arising from the use of linings of the above mentioned types and to provide avlining having 'advantages'peculiar toits own construction..` v i i Y Another object of 'heinvention is to pro- Y vide asimple, inexpensive, and easily manuactured lining for all'typeslof electric furnaces Vwhich is readilyV accessible in" all'iits parts and Which readily Vcooperates With other linings or similar or yother materialslf A. further objectofthe"invention-isf-'to provide a grooved lining for electricur- 40 naces.V i *Y y' v A stillfu'rther object of the invention is tof provide a lining .for electric furnaces hav- 'ing corrugations or grooves. ofa particular kind and direction.

.114s .A .pfeferrea embodiment i eieiivptpn drawings -vvhereifn sim'ilai;l numerals refer to section the' einen@ drawingmn det-3.11,' L; .lining 10l has been 7illilstrated Whichconsists-'of two parts;

forming the body of theliningy fand the sections and changes tof other. types of electric Vfurnaces or,v in fact, to" any vtype of` electric j urnacewhich lvmaybe evolved-lin thejfuture f y'lllieV cylindrical 'body portion "11,' fas shown;y

f "coRUNDITE Rnrnnoronrns, 'Inca or infissinon,` onro, Aconronnmron orron`r-`ofV hasi.- est rimmed' a ne teammate 1 eme-er1'pereehfeegheefiehe:several news; j

coniprises acylinder having one openv endf`12. 1 v

and onefclo'sediapertured;fend'13.y flheopenJ f end, which?,rnaygbeu terlned' 'the' upper one, 'is

will be more apparent helelalft'er.

closed; apertured end vbecause .of the,` factthat itl-Would be a solid end'w'all except kfor the A j preeeeeeef the eeetel; eperture 15 Provide@ therein.v llnthe sideyval'lof the cylinder another aperture l 1Q Vofi rectangular shape,-

-i'evideewithefehneelersreeve llexteed ies-irren@ eleendlehe upper eerfeee ,O ffhe 1 cylinder Wall. Vlhepurpose of this groove Theother end ofthexcylinder 1s `terrnedga having ai tapered `extension I7 Jatone of its sides, as shownparticularly. in Figs, l ZandE2.

of required shape tolgiveaccess to the interior of-thelining particularlythroughfthe doorfin the furnace (not shown) Whichmay i p v coincide therewith. v

lindrical portion-isgrooved as `at 18ct/herebyV Such an aperture as thi's inayvvellloe provided A Y The interior surfrceofithe vvall ofthe en Y f increasing the area ofthe Wall and further-i more permitting its cooperation With other:

if ylinings ,or plastic materials which canbe forcedwhileplastic.into'the grooves. If the grooves :18 aremadeo'fa dove-tail nature,

v Vfthatzirs, with inclined Walls so thatv the Wider f portion vof thegroove lays toward thejouter,`

[surface of the Wall of the cylinder, YitWilly be {seen} thattheV moldable or plastic material which is'placed ,inthey grooves Willibeeffec- L tively?" grip'pedffzk 'sof' i yasf-to 1 benond'splacable,

f tionsforpgrooves take a particular direction P @vide-part apli/ i vertialparallelrgroo s'18andextendffrom those points toward thejcenter 'circui "larf'closed apertured end 131.51

rising ifromvthe'interior surfaceV thereof", near vof fthe-'1 cylindrical `port y, Tl eina'terial 'ofswhich this liningk ismade e so'ffa suitable*reffactorygand preferred comV ositio'n consistsofl'ZQgand'SiOgflThe pre erred proportion ofthese;-ingredientsis ai @aproximar 702%1 Atos ;L and @mit mately130%jyl Ogalthoughi-t"will eappar 'fent thatthese percentagefsjjvcarri abflysvaried, if required;

above, Wecanf read-ily apply: to the"y grooves a v plastic or'V m'oldzble-V mixture` whichy can i be i, tamped or pounded into the same-and hence anohoredor attached tothelining in the'rniabsolntelyyrequired, but aid's,*:h'ovvever,

i holdingithe Inoldable V1n'ixturefirmly"lin `p'ofsi `tion.,. Whenthe naturejgof the' operations ,vvhicl'lare `"carried out in electric'furnacesis considered, theffact-will, befappreciated Vthen v l that itis imperative that Ythe moldablemix- Y`tre stick jwell, foronlythenwill the greatest klining@The"groove 1'8"*A f inthe cylindrical portion"-are:verticalgand?1 parallel and maybe s aced apart any desired 1 distance, the extent o gfthegroovsthemselvesA being naturally variable. -In the'v closedapaperture@ a iCevevfan 'mixture/ff l, ,e ,A

2. A refractory liningl consisting offafcy-V 125 andfluxing actions vvhich ltend to destroy the i' With the lining of my invention, `the metal to be melted in the electric furnace may be'of many kinds and the refractory lining y With :thetamped in moldablemixture is lsuitable for 'anything' that'v canV 'be smelted, Whereas inthe priorjknown constructions, great limitations are placed upon'the furnaces since they kvvereynot constructedto 'stand up to or toiyv'ithstand'the zvarious actions ioccu'r-ring in an" "electric "'-fu'rnace,V `wherein '-divers'ematerials-are used.` Infact, With a lining like e p`resent, a; single Afurnace-Q can berused thout chang ,plaeego'f 'a' number lfi f1fiir` 'ces which "always"l had 'to be' hitherto provided `forthez=gdiierent*kinds of smelting.

, arbe "he, lining ber adapted to, close fsaid' open, Bild and) havi ,'lindricalcbody portion iandfa f- ,cover therefor, said body: portion having an; openend4 protrally apertured end', andfanapertirrewinfits :vw'fallgf':'saidfibotly` portion having; alsoffinterior 4 V13;)

therfwordrs; may licei:pred'etere'r The above disclosure is intendedto be illus-A 1 1 'tr-ativerather@'thairriflimitative, as yWe may nais/meander@ e lectrrc'fur: f;

. parallel dove-tailed grooves, said closed apertured end g having interior dove-,tailed j' radial grooves connecting with the parallel grooves aforesaid at the` cireurnferenceA of the closed end, and said eover having an l.an n i nular flange adapted to enter the annulary ,groove in the open end `of the body portion Y and being provided. with radiali dove-tailed p grooves and a central opening, said grooves being adapted to receivey andV retain a m'oldable mixture. Y

InY testimony whereof, We havevhereunto i set our names this 22ndlday of October, 1929.

, HARRY R. ORWICK.

f EDWIN J.V-BoGNAR.: f 'A

Images