US1716391A - Metallurgical furnace - Google Patents

Description

.June 1929, B. TALBQT 1,116,391

METALLURGICAL FURNACE Filed Jan. 31, 1925 5 Sheets-Sheet 1 ,FM-Ny IIIIIITTIIIII'I June 11, 1929. B. TALBQT METALLURGICAL FURNACE Filed Jan. 31, 1925 3 Sheets-Sheet 2 \I \r| I @i Al Tl mu f/ I v J ng 1 Filed Jan. 31, 1925 :s amas-sheet sti-nating the furnace with one or more baths,`

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Patented June 11,1929.

entri-'in srsrs safari;

:BENJAMIN manner, or iarnnLnsBnoUe-n, ntoLANn.

METALLUBGICAL FURNACE.

Application fiea January 31, 1,925, sei-mina. 5,981, and in Great Britain 'Apin 251924; v

rl`his inventionrelates to metallurgical furnaces and particularlyto furnaces of large capacity for the manufacture of iron or steel, whether of the fixed or of the end-'tilting or sii'le-tilting types, and whether reversible or One'object of the invention is to obviate lthe necessity of tapping 'the metal from-'a ferro-manganese, spiegel or silicon prior 'their admixture with the main charge of the furn'ace. I

vBoth these objects are vachieved by conpreferably detachal'ile ,from the main furnace structure, which are in direct communication with the gas space of the said furnace and heated by the waste gases therefrom, and are coi'itrollably connected with the main hearth so that molten metal can be poured or tapped from the hearth ofthe furnace, and desired stored for a period of time before being poured from the bath.

These and other ,objects of the invention will be inore specifically described with reference to the accompanying drawings' which illustrate regenerative tilting furnaces of the reversiole type, but it is to be understood that these drawings are by way of illustration only and the in vention not to be considered as restricted to fi'rnaces of the type therein shown.

fii th se drawings 'F'gs. l and 2 are a lon- 'udinal vertical section and-,a sectional plan 7ectirely of an end-tilting furnace, and g 3 is a section of samson line S-lof k'. l. 1, of a side-tilting fnrnace, Fig. 6 being asection on line 6-6 of Fig. ll. v

Referring to Figs. 1-3, in general construction-the fnrnace is of the known type, being adapted to rock on the rollerbearing ar,V (Fig.

l) when tilting is required, and fired at each cnd alternately by coke oven gas or oil suplied through burners Z) and air from a re- `enerator throughflues (Z and ducts c.

v'lues and air ducts communicate with a bath @which is carried by the structure ofthe furnaee, but' can be removed when necessary for repair, and replaced, or can be exchangedV .it duly tamped' 5 and 6 are similar views rflhesev right angles to the aX-isv of tilting,` so asl to permit this movement, with an elbow'fpipe or the llke g. (FigsL 2 and leading to the regenerator,'whicl1 is not shown since'its con-` structionand arrangementare of the usual kind. Atthe other end of the bath c is a discharge spout it which is normally tamped and one or more'teeming nozzles i each normally closed by a stopper ic. cation between the bathand the hearth of the The c ommuni- 'furnace is .through a duct Z leadingfrom a tap-hole' Z' which may be closed by tamping applied by a tool inserted'tln'ough door m.

it is desired to withdraw'molten metal from it, it is tiltedin the desred direction and the tamping is removed from the 'duct lat the appropriate end of the furnace; metal is allowed to flow through the duct into the bath c. the sto 3 Jer k being in ilace 'and the s out i rfhe metal may then be,

teemed or pour'ed as though vthebath -were a ladle. t

The slide damper n-in a lateral extensionV 'of the bath e is normally raised; it is lowered to cut'off radiation from the hot' bath when the 'nozzle stoppers are being put in-place.

Fixed. furnacesembodying the present-invention'need not ditfer from the tilting' fur-'7 except with respect naces of the drawings,

to the supports, which aroufi'xed.

llli'ther arrangement of the yoint f ls Suitable for a fixed furnace, although in thatcase a inovable joint is not absolutely required, as

the furnace is not tilted, vexcept for convenience of removing or changing the loathe;

wWhen deoxidizers are vcharged into the bath c, they may be introduced through the doors 0, preferably, before themetal is transferred to the bath, so that they'may be preheated or melted. The bath or baths e may be utilized for melting, by the heat of the waste furnace .gases, charges of pig-iron which, when melt- The invention is not limited to a single bathl associated with the furnace, Whether at one 'part only or at more than one part. For instance, in the case of a furnace heated by producer gas Which lrequires pre-heating, one

or more gas regenerators become a part of the installation, each requiring its cinder pocket which inay be construct'ed to serve as a bath in the manner described.

It Will be seen that the tap-holes in the side walls of the furnace leading to the ducts l and'the doors lm provided in the opposite avallfer applying the tamping rod are i oontrollably connected with theI main hearth of said furnace.

A reversible regenerative 'steel furnaeey having separate from its hearth and at each Vend thereof a. bath for melting metal or keeping metal molten, said baths being'heated by Wastegases from the furnace h earth.

- 4. A metallurgieal furnace having an auxiliary bath associated therewith and positioned for heating/by the Wastefurnace gases, said auxiliary bath having a casting nozzle andstoljiper therefor, and damper means for screening said stopper from the main portion of the auxiliary bath.

5. A metallurgical furnace having an auxiliary bath associated th'erewi'th and positioned for heating by the waste furnace gases7 said bath having a lateral extension; and a casting nozzle and vstopper in said lateral eX- tension.

vv6. I; regenerative reversible metallurgical fnrnace having supplementary receptacles associated therewith 'and controllably connected with the main .hear-th, said supplementary reeeptacles forn'ing flues for waste heating gases from jthe furnace and being provided with means for pouring liquid therefrom. i

7. A regenerative metallurgical furnace having a main liearth and an auxiliary hearth heated by Waste products of combustion from the main hearth, means forming an external channel connecting said hearths and means for flowing air in reverse directionsv alternately over said hearths.V

l8. A regenerative meiallurgical furnaee having a main hearth and an a-uxiliary liearth at each end thereof heated by Waste products of eombustion from the main hearth, and means for fioivino' air in reversev directions valternately over said hearths.

BENJAMIN TALBor

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