US1724340A - Smelting furnace - Google Patents

Description

H. L. CHARLES SMELTING FURNACE Aug.y 13, 1929.

Y. Filed Nv. 27 .1926

2 sheets-sheer 1 rnlltlu." f////// H. L QHALES SMELTING FURNACE Hg, l@

2 Sneets-sneet 2 Filed NOV. 27 1926 INVENTOR af/ A f ATTORNEY Aff/64015 4.

HENRY L. TST L:A

FFIE.

or wer, WN.

..1 a nunon application iled December 29, 1925, Serial No. 78,155. Bivided and this application tiled Iovember 27, 1926.

My invention has particular reference to improvements inlvsmelt' furnaces of the reverberatory type, and 1ts ob1ects, generally stated ar to provide a series of water- 5 cooled brichs, Ehe utilization of which affords an rch of lighter construction and thinner furnace walls; andz to aord afurnace ap roximately one-third smaller in size, having the smeltingcacitypf a reverberatory furnace of' usual enslons adapted to a lar e output. .V y

the accompanying drawingsy y Figure 1 is a cross sectionof the ce drawn on the line 1-1, of Fig. 2;'

Fig. 2, a plan view of this same, broken away, the rmg end being indica but the 'flueeud omitted; 1

. Fig. 3, a longitudinal section through the line3-3,ofF1g. 2'; i v --1 2@ Fig.' 4, a vertical sectionxo one ci the hollow cooling bricks, with its cooling'chamberinsertedgand, L Y '1 Fig.v 5, a cross section of :e ontheline5-5,ofFig.4. u Q5 The base of the furnace l, cocted oi concrete inthe usual manner, supports verticall 4extending1 and parallel side iii: 2,

a w 3,: representing the Yend,i a due end, which isl of ordinaryjconstruction and hencenot-shown, andan archedroof all designated as 4.

he hearth shown lisation for Letters Patent of the fl tutes, Non kia-LI b9? 29th, i925, of which this is a i application, and while the m herein ho and described are particularly use in connection with sucha hearth structure, it

\ W111i be, obvious to. am annee in ne es that said means caribe as well applied to ce' having a' horizontally v -v-,rw v

hearth, or a hearth of other form.

. The hearth, of silicious material, comprises .an inl banked section 5, con- 45 nace, and having its upper terminal near the arch. A mound portion 6, divi the smelting zone ofthe earth inttwo parts, extends longitudinally of t 'van' for 0 about two-thirds of its length, and itis pro vided at its free end 'with a inted terminal 7. Sand Si ldenote channele sections disposed between the mound and the banked sections which are adapted to cooperate with W Said terminal in facilitating' the how of the ness. While ll do not desire to be limited tospeciic ensions, under the coef .L 1 fr tiguous with each side and end of the rur-V Serial No. 151,.

metal into the metal bath 10 and out through the tap hole 11. Ilhe matte and slag Vlines Jig the metal lbath hare denoteddby 12 and respective s owin a ee ath brought close tthe archg p y ln the ordinary furnace of this class, avera 'ng about 125V festin length, the width o the side walls ranges from 21,4), to 3 feet, with an arch from 18 to 24 inches in thick.-

tion l heremfore and presently to be described, it is practical to reduce the thickness of each wall and of the arch to l foot,

and reduce the leb of the furnace to ap- 70 proximately feet, Awithout a decrease of output. l Adjacent the firing end of the fr acewhere the greatest heet is generated--I provide an arch formation of hollow bricks, said bricks being denotedas 20. In the present ement of the invention, this formation consists, as shown in' Fig. 3, of'threesets of saidbricks, said sets being designated as 2l., as each are oi idenmcal construction. Each set constitutes the enclosing roof structure at this. portion of the furnace, and, after the iirstone, is i. @sed in .ascending and step relation to an adjacent set, and they provided with expansion joints 22, as are l c. n -cooninarch construction. lnview,howf isthe'subgect el i e ever, of the cooling means` to be described and which sheet a reduction.. in' expansion,l these joints may be about one-thirdas thick those coonly required. The fis. of the arch may be. constructed of brick, and im if., suitable i ia Said Stpped relationo 'the dierent sections being .maintained throughout, as indicated inYFig. 35Min. allow for expansion of the gases kpi'noilii'ced by the operation, d to imit the erosive edect o the ga on the arch.

The side walls` and ends of the furnace may be oi light and ordinary brick construction, 'by ren ci the protection aorded 10o by the m edons 5. The upper -ends of the side walls, however, directly ex osed to the heat in the sono covered by sai sets ust described, are also built up of the said ollow bricks, as shown in Fig. 1, the saine 105 being disposed in the same vertical planes occupied by the similar bricks in the arch. Should the furnace be one in which a hearth of diderent form is utilized and which would adord but little, ii-any, protection to the 11() extending close to the,

I side walls, it would be desirable as is evi.

. munication with the container.

A cold water main and a hot water header pipe 41 are operatively mounted on the furnace for each transversely extending row of brick h1 the arch and the adjacent brick inthe' side Valls which carry each a container just described, and the same are connected up with the containers through the Ts 42 andthe rubber tubes 43 and 44, thereby establishing a circulation of water l through said containers. As is obvious, if deemed desirable, but one cold water main 25 and 'one' hot water header may be provided for each two rows of the cooling brick, and the adjacent cooling brick disposed in the side walls.

` The. openings to accommodate the centrally located oppers and the side hoppers 51, where located in connection' with the cooling means, are provided by eliminate ing a hollow brick for each, as indicated in Fig. 1 otherwise the hoppers, arranged in the relative positions own and in the req uircd numbers, present the usual construct1on.- The means for firing the vfurnace 52,'

, and the buckstaves and connections, enen ally designated as 53, are also of or inary construction, and perform their common.

functions. v Y .l lThe cooling means referred to permit a relatively light construction inthe walls and roof, thereby reducing the size of thehfurnace' without reducing its capacity, and at the same time: adding to its life by .limiting the "corrosive eect of the smelting o erations lllgsit will be noted, the close end of each of said hollow brick as laid provides an inner peripheral section of the furnace and the open end provides an outside section of the furnace,hence if the same should be come defective, through erosion or otherwise,

' it can be readily replaced as it is accessible exi teriorly of thefurnace. Said means, as is evident, may be installed in other sections` of the furnace more remote from the firing l, end than are shown inthe present embodiment, and other changes in andk modifications of the construction described ma be made without departing fromthe spirit of my (il'vention or sacrificing 'its advantages.

aim: Y

- 1. In a reverberatory smelting furnace having verticall extendingside and end walls and a roo cooling means located ads of `hollow brick laid in the roo walls conti the c osed ends roviding inner peripheral porti uns of the nace andthe open ends jacent the firing'end, comprisinv' a plurality f f and in the ous to the roof, each brick .befY

ing o n a one end and closed at' the other,.

extending exteiorly thereof a metallic con l tainer mounted within each "brick, a cold water main, a hot water header pi and itV means for operatively connecting said rmain and pipe with each container.

2. In a smelting furnace, an arch construction comprisin a set of hollow brick laid transversely o the arch, each'brick being open at one end and closed at the other, the closed ends providing inner peripheral p0r- Stv tions of the furnace and the open ends exexteriorly' thereof,l a plurality of sets o cending and stepped relation with the first set, relatively thin expansion joints disposed between the sets, a metallic container mount-l ed within'each brick, a cold water main, a

` hot Water header pipe, and means for opi' eratively connecting said main and pipe with each ycontainer to provide for a4 circulation u of water throu h the container:

, 3. In a rever ratory smelting furnace, a

brick construction for sections of the furnacesubjected to the corrosive eiectof smelting operations, comprising la plurality of hollow similar construction located in as- I brick, each brick bein 'o "n at one end and 'closed at the other, t e vclo's'ed ends rovid` ing inner peripheral portions'of t e furnace and the open ends extending" exteriorly thereof, a metallic container mountedl Within each brick, a cold Water main, a hot Water 1 header pipe, and flexible connections for each contamer with the cold water main and the hot water pipe for establishing a .circu-V lation of water through the container.

r 4. In a smelting furnace having a 'cooling system, including a cold water main and a hot water header pipe, a plurality `of hollow cooling brick, la metallic 'container detachv ably mounted in each of said-brick, and conQV nections for each container with the main and vpi for establishing a'. circulation of Water` t rough the container. o.

HENRY L cnAnLns.

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