US921325A - Electric smelting-furnace. - Google Patents

Description

G. E. WILSON.

ELECTRIC SMELTING FURNACE.

APPLIGATIOH FILED JULY 30, 1908.

30' In carryin'g. out" my invention 1 melting ieeeptaclemr crucible A w ich' ma ensures Watson? 6 W; t l

i an it i vsai essmas mam Nq. 921,82M

Specification of Leatherette? 1 reteste ma n. mom-"- A 'jsucaumi w as, so, 190s; s m non-140,002.

, To aZMqhbm-ttmay whcemL y it knownthatl, CHARLES E. WILSON, a c t-teen of the United States, residin at Hood R ver, county ofllood River, an State of 5 Ore on-, have.invented,a certain new and useful, gnprovenlent in Electric smelting-Fur naces,- 0f whlchithe following is a specificai w s r My-Jnvention relates to a new anduseful improvement i-naelectric smelting furnaces A generallyand more particularly to such furnaces as aretused for the reduction of term titanium in steel-foundries and has for its ob ect to. rovide, an exceedmgly simple and evice 1 of this character in ,which the air-would be prevented from entering the crucible. With these-ends in" view, this invention consists in the details of construction and combination :of elements hereihafter set forth andjthen specifically desi ated by the clain'is.

l In o1der-that those s ledlifi the art to which this; invention a. pertains may understand how to make an use the same, I will "describe its construction in detail, referring bywletter toi--the accompanying drawln forming a art of this Specification, in whi thefigurennthedra'wing 1s a view partly in section and partly in elevation.

rovide a beef any desired shape or size which isbui t of chrome bricks B and carbon C, and around these placed-- a metallic plate D. The

4 sides ofthe crucible are built on'an an le so I "tgt'the -lower portion of said cruci le is aller'than then: per, and'leading from the vlowerIpiortiOm-t ereof is an opening E abouttthe outer-end of which is placed a 4g chute F leading to the *latlle (it.

'OnTBGp of the crucible is placed a suitable wittel cooled' jacket H through which are formed suitabldopemngs I to allow the electrodesto pass in the crucible A as will be hereinafter described. Throu hyone ed e is formed another hole'J in-whidh isfitte the valve K against which resents valve L. Between the openings I is formed another opening M intowhich leads the screw conveyer N above which is secured a holpper O 1 into which may be placed the materia which the conveyer is to carry into the crucible A.

P indicates tubes bolted to the water cooled jacket above the openings I and formed with carried to the foundry. It is advisable to the upper ends are the flangesQ and about these tubes P are piacedthej tljbQSLH haying inwardly extendin flanges is whiclf-enga with the flanges formed onlthe tu'bes I These flanges S are adaptefistefit over-chase against the outside ofthe tubesiFP so-zisito prevent any air fromenteringi 'said tahcsand insulating material P issf aced betweemthe tubes P and the jacket vin-orderstoprevent the. short circuitirng the ciirrent. The electrodes T are adapted-d c pass throu h these tubes into the crucibleu-A amtlare'he' d securely to the 11 per tubes-R b ,itl'a'e ri'n'ggU which is clampet aroundtheie ectrpdes'ta'nd secured together by the bolts fUT Ofitlie lower part of these rin s-aieifortned flanges V by means of which t eyn-maybe-claniped to the tube R b the bolts-V. Formed with or secured to t 1e rings.U-'are tlie eye-'W to which are secured the chitins W ieaad chains being carried by the movable carriagefi. A re resents an openiiearthfuirlaoe in which t e'steel isprepared before enteri ti the crucible A of the electridftirhhcean' leading from this open hearth is a chute B the outer end oi vt'h-iclris iif. rcx imity to the valve'L =so that when'isaie valve is raised the steel -will be-allowed to run through the openiiig'd into thecrqct bi A i A Z a H tuft: utili Iii ractice the mix'ti'li'e is 'criisll'edifiitll it is-a out like coarse sand well mfxed sad heated to-a red heat their it is 'plabedinthe hopper O and by tu'rnia thssmew; oifiveyer N it willcarry' thkeuni-ziturefihto the crucible A. The electric cui'ienb'is then turned on tothe uectreaewrwuasuwhen once reduce the mix-tire ahtl 'slioflild the gases from the reducti'biibf dritsaccfupin late in the crucible i ili tilltiliei fpries tfrefih raised suflicient to liftth i tili estiidfallow the gases to escape whefl' it-fsiil ficiefltfitiitdunt of titanium has been i'edllcd 't lief'va lye Ti's i opened and the steel alldwedftwifun .f idm the open hearth furnace Ad toWhefiiruqible A 'at which time it will 'riiiiifhvith 'ti'ttlniu'in tir any d tlir 'alloiy wlricliirriflh tdfil d liiced 'iii the crucible. hen the steel has had time to thoroughly mix with or take up the titanium it is tapped into the ladle G and feed the mixture into the furnace very slowly so that no great variation in the temperature will be caused.

openings a second set of tubes slightly,

The reason for heatin the charge before placing it in the cruci e is to avold explosions the tem ature'berllfi so .h1gh that the least bit of ampiiess cause explosion which would wreck the furn JOf course the exact details of construction as these may be'varied without departing from the spirit of'm invention. I

Havin us fully. described my invention,

larger t an the first" named tubes and ads ted to slide u and down on the outside oft e first name tubes, electrodes passing throu h said tubes into the receptacle or crucib e,and means for raising or lowering said electrodes or removing them altogether, as and forithe pu ose set forth.

2. In a device 0 the character described,

a melting receptacle or crucible the inner walls of which slant inward tbward the bottom, a water cooled jacket having suitable openings formed therein placed on top of said melting receptacle or crucible, a screw conveyor leading to one of the openings, a hop 1' secured above said screw conveyor in w ich the mixture is adapted to be placed, a valve placed overone of said openings, tubes placed over a number of the opcnin s, a second set of tubes slightly larger than t 1e first named tubes andadapted to slide up and down on the outside of the first named tubes, electrodes adapted to pass throu h the tubes into the receptacle or crucib e,

rings ada ted to be clamped about the up per end 0 said electrodes, means for clamping s'aid rings to the up or tube, and means for moving the upper tu e up and down, as and for the pprpose t forth.

3. In a device of t e character described, a melting receptacle or crucible the inner walls of, which slant inward toward the bottom, a water cooled jacket having suitable openings formed therein placed'on top of said melting receptacle 0;, crucible, a screw conveyor leading to oneof the .OPQIllIlgS, a

I do not wish to be limited to -valve ior conveyi hopper secured above said screw conveyor in which the mixture is adapted to be placed,

a valve placed over one of said openings, tubes placed over a number of the openings, a second set of tubes sli htly larger than the first named tubes and adapted to slide up and down on the outside of the first named tubes, electrodes adapted to pass through the tubes into the receptacle or crucible, rings adapted to be clamped about the upper end of said electrodes, means for clamping said rings to the upper tube, eyes formed with or secured to the rings, a movable carriage, chains secured to said movable carriage and to the eyes formed with or 50'- cured to the rings so that the electrodes may be moved up and down or entirely removed from the receptacle or crucible, and means for supp] ing the receptacle or crucible with steel, as shown and described.

4. In adevice of the character described, a melting receptacle or crucible the inner walls of which slant inward toward the bot- ,tom, a water cooled jacket having suitable tubes placed over a number of the openings,

a second set of tubes slightly larger than the first named tubes and adapted to slide up and down on the outside of the first named tubes, electrodes adapted to pass through the tubes into the receptacle or crucible, rings ada ted to be clamped about the upper end 0 said electrodes, means for clamping said rings to the upper tube, eyes formed with or secured to the rings, a movable carriage, chains secured to said movable czii'i iage and to the eyes formed with or secured to the rings so that the electrodes may be moved up and down or entirely removed from the receptacle or crucible, an open hearth furnace placed above the crucible or receptacle at one side thereof, and a chute leadm from the open hearth furnace to the the steel from the 0 en hearth furnace to t e'receptaclc or cruci 1e, as shown and described. a

In testimony whereof, I have hereunto afiixed mysignature in the presence of two subscribing witnesses.

CHARLES E. WILSON. Witnesses:

J. M. Cummn'rson, W. B: HAYES.

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