US802493A

US802493A - Process of reducing metallic oxids.

Info

Publication number: US802493A
Application number: US22303704A
Authority: US
Inventors: Thomas Shoenberger Blair Jr
Original assignee: B C LAUTH
Current assignee: B C LAUTH
Priority date: 1904-09-01
Filing date: 1904-09-01
Publication date: 1905-10-24
Anticipated expiration: 1922-10-24

Description

51m/vento@ PATENTED 00T. 24, 1905 T. S. BLAIR, JE. ROGESS OF .REDUCING METALLIC OXIDS IUPLIOATIULr IILBD SEPT: l

y AWA v T/zozha/s :y Blair,

" my www i NU Application fihalieptcmhurl.,190%. rrlsl No. '123,(33'7l lnrgnly and ro proridl l'or tho economical charging' and r'liscliarnino' ol tho l'nrnarc oin- 55' ly invention rclnlioa to iniprovements in i i rocensof; Ior reducing' inetallir: oxidn mixed with grangne, especially iron onids7 whereby i ani enahled tomononiically produce .rrouglu,`A 1 iron direct l'roni the orc and which ns lrco` groin incljnlloidy and is; in condillon i`or nso, as

iereinal'tcr dcscrihod and clainieih ln the acoonn :rnynnr drawingg'st Vlilgrnrel is an ele"ation o'lE one lorni olY l'nrnarc which may ho nscd in carrying` ont nrt* improved 1 v prot-oss. Plan2isasccllonal Viewol'fhcaanie.

Referring; lo the drawings, which s-show one l'orin ol' lnrnace 't' tion of my process, fr is a steel or iron shell lined with .anitahle refractory,V material l1, auch an inagncsite or chrome Iii-ich. supported on and revolved hy thc shipportinn4N rolle-rs v, which ning' he driven hy :my Sui'iahle means. The 'furnace isprovided with a reinov ahle connection to a d 'altflhm 1, which is i connected with tho chimney-stach (not Shown) ol.' conilnlsthin. 'lhia relnovahle connection also acts an a door through whlch the oro may he introduced into the 'furnace andthe hall of metallic iron withdrawn troni the l'nrnacc. 'lhe furnaca in provided with a tap-hole .fg whirl Atables the molten cinder to he clin' charged 'iroin the furnace. The latter is 'l`u1- thor provided with a door j", haring' an opening through which an oil or `gras hrn'ner `f/ prn-` jecl's for the purpose ol introducing tho redueing gas or atmosphere to the interior ol.f the furnace. The said door in also provided with an opening" J, llaw'ing, n renioval'ile cover through which thc operation ol the furnace may be observed. This door is no coi'intrncted that it may he readilr7 removed from the end of the furnace, so that it alno may hc used for the introd notion of the ore and the withdrawal of the metal in the lorrn of a ball.

To enable my process to hc carried on hat ma) he uned in the operm.

This shell in plow-rd.. l prill'rralil'i' hnild the Elnrnn, a ahh? lf.' sidi; willi their sind#` in linr, and mnploy an rhectric charging" machinea willi chart-in hormis, uch nx is in connnon me 'mchal opoirhcarth sl'rol-nielling' l'urnncnf-i opor( in iront ol one vnd ol llnl l'nrnar-c and rnhiplf rd V.for ',:liarifinhi the orA al .anch ond ot nach l'urnacc and alao emploi` a iilnilar machine equipped with .anitahle tonni; operating' in l'ronl' ol the oppositf: end oll lhf5 l'nrnaue l'or the witlulrawal ol the iron halla.

'lhe operation o." my improved proscar` izan follows: yl`hr` nirtallic oxidn lo he rodurod :iro lineljiY lronnlh il 1i 1l:nli'a^;nl;, in prannlar l'ornn and are rlzarn'od into the .Vul-rhum 'ii/horn the", "2

:1re oxtpoaod to and enwloped in a rrdnciin; ldeoxidiL/,ingl a nioaphorm whirh naar lie oli-- tained lift' the partial oolnlnifdiion oi mii-hon or l'iydrocarhnnranchintroduced troni ihr hurra In. loal. maligna or oil niniY he wird to in v 75 atmen-i-` duce anch ganen and .finch redinfiin; phcro. i millicicnt quantityv ol' the 'isch hurried to crealg, a temperature ol 'from to 1,000 iiahrcnhcit,which in lQullieiont ha' chfniieal r factionn required l'o11'e1n ,wr1l ofthe ofrygrn lroin the metallic oxida, lint hearing nncminunied a grcat proportion ol thc rmlu inw agents, (ca 'honanrl lirdrogein) which hnrn A real er allinirgr than iron or other similar niet" l alla for oxyiron deconiprwf tho metallic oahln al. 535 for the pnrpono oll carrying ol'lI the products .auch trniperature and unito with the oxygen, the products ol thisy fifonlhnnlion panning' ont el tlniurnace and leaving the iron or othcr :notai lire-,ated praclically free from all iinrnirition. llnriiigg; this operation thc turrnnzn ia mechanic ally revolved or rotated, the elileet lining.; to pone 'the linclyalirifled nnrtclen of the metallic onidss to intimate and tl'iorongh Contact with the heated reducing' agentsa inaurilny rapid and completo deoziidn'iion and lniniinimn he 95 luci minnnrnptionand also cansiingu the, .iron

or other metal to gnthcr together in ii, hall similar to the ordinary puddle-hall as it na ta with its oxygen and assumes the nire forni. ifif'hen the oxygen hatv :lll been i, hated from ehnniica combination with the metal., the temperature in the lrnnacii-y is inM creased hy canning' a more complete oornlninu tion o1 the foci, so ns to melt the ,ojnnero nr extraneous matter contained in the i. ncrii m5: and burn ont the metalloicln, suitable thnzcv IDO being Aadded at this point of the operation, if desired or necessary, and the fused gangue or extraneous matter is then tapped oli' in the form of liquid cinders; but the temperature is at no time raised suiiiciently to fuse the metal, and the metallic bali when the liquid cinder has been separated therefrom is then removed from the furnace and constitutes a high quality oi"wroughtiron which is free from metnlloids and is in condition Jfor use and may delivered to the squeezer or hammer and roil e the ordinary puddle-ball, or may be us r melting stock for the openhearth turna Crucible.

it may beA oi eri/ed that i. do not in carrying out my imp -ved process employ a solid reducing agenti, hence am enabled to pro duce Wrought-iron direct from the ore and without fusing the sanne, which wouid be necessary, if a solid reducing agent were employed, inorder to get rid of the particles of carbonaceous materiel which `would become mechanically mixed with the metal. Y

Having thus described my invention, what i claim as new, and desire to secure by Letters Patent, is- Y l. The process of reducing metaliic oxids mixed with gangue, consisting in removing the oxygen therefrom by subjecting the same to contact with a reducing-ges et a tempera ture suicient to cause the required chemical reactions, but with an insuicient suppiy ol" free oxygen toconsnme the reducing agents, changing the reducing temperature to a nonredncing one by supniying more air, raising ecaeee the temperature sufficiently to fuse the ganglio or extraneous matter :ind burn out the metalloids but not lto the extent required to fuso the metal, separating' the fusedignngue or extraneous matter from the metal by meltingl the gangue therefrom and balling the metal Whiie the gangue is being melted away therefrom.

mixed with ganglio, consisting' in maintaining a body of particles of such oxids in motion, to successively bring all of such particles to the surface, subjecting said moving body or' such oxids to Contact with a reducing-gas at such temperature as to cause -the chemical reactions required to remove the oxygen therefrom, but with an insuiiicient supply oi free oxygento consume the reducing agents, changing the reducing temperature to a nonrednoing one by supplying more air, raising the temperature sniiieiently to fusethe gangl'ie or extraneous metter and burn out the metalloids, but not to the extent required to fuse the metal, and While continuing to so move such body separating the fused gangue or eX- traneous matter lfrom the metal, and balling the latter, substantially as described.

in testimony Whereoi` l have hereunto set my hand in presence of two subscribing witnesses.

THOMAS SHOENBERGER Blniili, Jil.

Witnesses:

li?. H. Kruit, ii. Il'iicnnnms.

2. The process of reducing metallic oxids