US798312A - Smelting-furnace. - Google Patents

Description

Mmmm AUG. 2Q

E. L. 5 N. WRINKLE.

SMELTNG FUBNAGB.

ALPLIGATIONTILED JUNE 3. 1904.

' A zsHBETs-SHEET 1.`

PATENTED AUG. 29, 1905.

H. L. N. WMNKLE.

SMELTING PURNACE.

APPLIoATIoN FILED JUNE a. w04.

2 SHEETS-SHEET 2.

il@ gf/wam. MTM/VE YS dUNTTED STATES PATENT OEEIOE.

HERBERT LAURENCE ivaINxLE AND NOAH waiNKLE, OE KEELEE, CALIFORNIA.

SMELTlNG-FURNACE.

' As here illustratedit is designed for smelting lines the arrangerfen soda; but the invention is useful in connectionwith any fuel and for smelting various other substances by slight modifications in the design of the furnace.

The invention resides in certain novel features of construction and organization, which will be fully set forth hereinafter. Reference is had to the accompanying drawings, which illustrate an example of our invention, in which drawings like reference characters indicate like parts in both theviews, andiin which-f Figure 1 is a sectional plan on the line 2 2 of Fig. 2,this vievwrlso indicating by broken "of theair'lblastconduits, which are ldlcatedabofitle lineo'f section; and Fig. 2 is a vertiealw'section of the furnace.

The furnace isformed with a Crucible or melting-chamber 10, above which is a stack or shaft 11, said Crucible or melting-chamber being provided with tangentially -disposed twyers 12, the stack havinga charging-hopper andbell 14 and outlet-conduits 15 for the wastegases. The furnace is constructed on a suitable base or foundation 16, and the cru- Cible and shaft or stack are suitablylined, ac-

l cording to the work whichv the furnace is intended to perform. 1n the case of the sodasmelting furnace here illustrated the hearth 10'L and the lower part of the side walls of the crucibleare formed of basic material, and the remaining interior brickwork 10" of the 'cru cible and 11 ofthe stack are silica lirebrick, the' external brickwork- 10c and 11" being of "red brick.

As best shown in Fig. 2, the crucible 10 and shaft 11 are provided with bracing-staves sired form.

16a and hoops 17, which may be of any de: The dome 10", forming the top of the Crucible l0, is arranged below and spaced from the dome 18 and forms with the domeIO" an air-chamber.19.- vThe dome 18 Specification of Letters Patent.

Application filed June 3, 1994. Serial No. 210,966.

l Patented Aug.29,1eo5.

also constitutes the support for the shaft 11, so that the inner dome 10h or top of the cru- Cible may be removed at anytime for the purpose of repair without disturbing the stack. It will also be observed in this connection that thc bottom 10 of the crucible andthe inner surface or lining 11 of the vshaft may be removed for repair without disturbing the other parts of the apparatus. The chamber 19 is provided with a partition or wall 20, extending from `the stack outward to the sides of the furnace, (see dotted lines` Fig. 1,) which wall serves to facilitate the circulation of the blast through the chamber 19 for the double purpose of coolingy the roof of the Crucible and heating the air, all of which will be fully set forth hereinafter.

In connection with the crucible 1 0 and shaft 1l we desire to point out -the relative area of these chambers and to explain that using the furnace in connection with fiuid *fuel the area of the Crucible is such that the material falling from the stack `11 into'the Crucible will occupy in the Crucible the form of atruncated cone, the base of which'does not extend farther tlian the outer or marginal limits of the bottom 10L of the Crucible. This-provides in the outer portion of the Crucible an unobstructed passage for the Circulation of the burning gases, which' gases in moving 'Circularly around the crucible reverberate upon the matter in the Crucible and finally 'work through the mass of material in the stack and pass'out through the .conduits 15, exerting meanwhile upon the material inthe stack the necessary smelting, calcining, and drying action.

The twyers 12 being tangentially arranged cause the burning gases to take up a circular or spiral movement in the direction of the arrows indicatedin Fig. 2. -The fuel used in connection wit the furnace in accordance with the example here illustrated may be either liquid or gaseous.

2l indicates the fuelfnozzles, which are projected, respectively,.into the twyers 12 and provided with the necessary complementary devices for varying the 'amount of the fuel and the ad mixture of air therewith. As shown in Fig. 2; the conduit 22, leading from the4 IOO discharge of the air-blast, basa branch or extension 23 passing into the chamber 19 at one side of vand adjacent 'to the partition 20 thereof. From the conduit 22 branches 24 pass,'

respectively, to the twyers l2, thesebranches -branch conduits 24- being commanded by air-valves 25, which may' be of any form desired. Leading from the Achamber 19 at the side of the partition 2O opposite the side on which the branch 23 is located are two branch conduits 26, which pass, respectively, into the branches 24. Between the branches 26 and the twyers 12,airvalves 27 or other desired means for controlling the air movement are located, these valves commanding the movement of air through the Upon supplying the blast to the conduit 22 said blast passes into the chamber 19 and through the same', from which it passes out through the branches 26 and 24 to the respective twyers ll2. The movement of the air-blast through the'chamber 19 serves,'therefore, thetwofold result of cooling the top wall of the crucible and of heating the blast preliminary to its introduction into the furnace through the twyers.

i This heating of the blast brings abouta' more thorough mixture of the air and fuel, and consequently a more thorough combustion of the fuel in the furnace.

According to the embodiment of the inven. tion here illustrated the outlet fromthe crucible consists in a radial passage 28, having a spoutor continuation-29, the spout being" from the furnace is gathered.

37 indicates the conveyer-chain for carrying the material through the tunnel.

The organized operation may be traced asl follows: '-lhe material to be smelted should be charged through the bell14 intothe shaft 11, whereupon it will fall upon the bottom of the crucible 10 and assume the form of a truncated cone, as before explained, the material thenrising in the stack to a point dependent upon the amount charged into the furnace. Upon turning on the air-blast and fuel the burning gases will move with a swirling or circular motion in the upper part of the crucible around the cone-like body of the material therein and will be reverberated by the upper wall of the fu rnacc down on this material,'fus ing the sameand finally passing up through the mass of material in the stack and out through the conduits l5, during which passage lthe material in the stack is dried and calcined.

`tition and leading into thecrucible.

ycible of the furnace.

two subscribing witnesses.

After the-operation of the furnace begins the l air-blast in passing through the chamber 19 willcool the upper walls of the crucible and will in turn be subjected .to a preliminary heating, thus increasing the efficiency of the blast. The molten product of the furnace is 65 ber between said walls, the stack extending '75 through both of said top wallsandmeans for circulating an air-current into said chamber and from the same into the crucible, for the purpose specified.

.2. Asmelting-furnacehavingacircularcru- 8 cible, a permanent outer top wall for the crucible, an inner top wall below theouter wall-and spaced therefrom to form a circular chamber,

a stack sustained by the outer top wall-and passing through both,top walls, a radial partition in the circular chamber, an air-blast pipe passing into' the chamber at one side of the partition, and .an air-blastfpipe passing from the chamber at the otherside of the par- 3. A smelting-furnace havinga circular crucible, a permanent outer top wall for the crucible, an inner top wall below the outer wall, and'spaced therefrom to form a circular air-A chamber between the two walls,ad a stack 95 sustained by the outer top wall and passing through both top walls to communicate with the interior .of the crucible. i A

4. Asmelting-furnacehavingaircularcrucible, a permanent outer top wall for the crucible` an inner top wall below the outer wall, and spaced therefrom to form 4a circular airchamber between the two walls, a stack sustained by the outer top wall and passing through both top walls to communicate with the interior of the crucible, and means for circulating an air-blast through said circular air-chamber and from the same into the cru in testimony whereof we have signed our names to this specification 1n the presence of atentar LAURENCE walNKLn v NOAH WRINKLE. Witnesses:

- Bas l. HUNTER, JonN McCoaD.

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