US757222A - Hearth for smelting-furnaces. - Google Patents

Description

hymn-7579222.. i. PATENTEQ'APR. 12,19%.

A. R. 'PARTRIDGR HEARTH FOR SMELTING FURI\TACBS.;-l APPLIUATION FILED omas. 1900. BHNEWBD JULY sa, 190s. yNo MODEL. I

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VilniTTnn TaTns Patented `April l2, 1904.

llnTnNT @Trice .ililillf R. i .\li'l`llll)(l `i. (lF SAN FRANCISCO, (,lillilFURNlA, SSIGNOR 0F ONE-HALF T() FRANK XV. PAGE, OF SAN '.FRANClSUO, CALIFORNIA.

HEARTH FUR SWllEILTlNGi-F'UFNACES.

SPECIFICATIONformiz-ig part'of Letters Patent No. 757,222, dated April 12, 1904.

Application filed October 22,1900.l Renewed July 22, 1903. Serial No. 166,637. (No model.)

To nil '//iz'mib if muy concern,.-

Be it known that l, Annan R. lm'rnrnun. a citizen ol the United States, residing ati San Fi'amfisco, in the county ol' San Francisco and 5 State ol (lalifornim have in vented ce1-tai n new and useful improvements in llearths jfor hlnn-:lt-inzer-Furnaccs, olf which the vfollowingl is a speciiication.

My invention relates to the treatment of io copper, molten and other orcs und niattes for the reiining, and desulurzation of the saine, and comprises a novel construction ot' the hearth or crucihle oi' asmeltiug-urnace .for accomplishig the Stated purpose.

15 ln the drawings, Figure l is un elevation of the lower part oi' a furnace and its hearth, the. latter being' partly 'broken away to show a soction ol the interior. Fig. 2 is n plan View, partly in section.

zo 'ifhe hearth or crucihle A is shown in couinecticn with a smoking-furnace B, which may he ol any suitable construction. l prefer, however. the construction ci' furnace described in my application for Letters Patent, Serial 25 No. l0,760, liled Merch 30, 1900, in which the turnaceis supported independently of the hearth and issepnrated from it, so as to forni a d raft-space l. T he hearth A is portable, being supported hy rails C and carrying wheels D 3o above the pit lil. 1 A

El? are hinged doors constituting` a drophottoin, as shown in dotted lines.v

'ille hearth is adjustable toward and from the unici ter in order to diminish or increase the 3 size of the draft-spuce, and so regulate the draft, the Tuijustnient heine; conveniently el l'ected hy the screws 2 and hanftwheels 3.

'lhe hearth is lined, as sh Wn at i", with lireu clay or other suitable refractory material and l0 is provided with the dischi1-rp;o-spout il for 'molten material and with the slag-spout 5.

As a special improvement in hearths for sineltors l make the' metallic casing of the hearth double, so as to provide a writer space 45, or jacket G, and provide meansiior the circulation oi' water therein in orderto reduce the t-(miperatnrc ol the casing, and so prolong its life by tending,r to prevent warping and other destructive effects of the intense heato its molten contents. Supported upon the 'frame 5G or hase ol' the hearth is a water-,pipe lL'ex tending around the hearth, from which riso the pipes ll. Frein each pipe il a branch, provided with a cock t, extends into the waterjacket. l,Yater-discharge pipes leading froin- 5 the jacket are shown at l, which preferably discharge into the exterior waterway S for slag, and the water-inlet to 'pipe il, which supplies water from any suitable source, is shown at J. Natur can thus he admitted to 5 the jacket at one, more, or all of a number of supply-points` so as to cool the casing at inany dil'lerent points. as distinguished from a jacket having a single discharge between which the waiter circulates 'exposed to great` heat. E15

lhe principal part of my invention relates to the introduction of air under pressure directly into the hearth, wherelgiy the molten mass can he relincd or desull'urizcd without transfer to converting; plants. For this pur- 7@ pose an air-inlet pipe .l is connected to an eirforcing device or compressor. (Not shown.) This pipe enters an air space or accumulator L, which extends around the hearth ahovethe hase und which fills with air under pressure. 7 lgealirui,r from this space at intervals around the hearth are twyers M, provided with valves 8, the jets or nozzles of which are carried through the water-jacket and the heinth-linu ing und open into the interior at a suitable 50 height to force oxygen into the molten uiatte through any or all of such nozzles.

lf the ore under treatment contains an iron hase without copper or with only a small percentage o i the latter and it is desired to concentrate or reline the resultant matte, the operation conducted in the saine, manner.

The uct of injecting oxygen into the iron matte will cause a large quantity of the iron to become oxidized und liow oil as silicate ol o@ iron in the slag,precipitating the precious metals, owing to the higher specilic gravity, tothe hot-tono of the crucihie. This operation is carried on until the show by assay that they contain precious metals. it this of, time l hoven very higl1lyconcentrated piatte, or.. in other worden matte highly charged withprecious metals, thereby making it pos- Lft operation.

L concentration.

Ela

sible to concentrate a large number of tons of ore into a very small Volume of matte at one The usual mode of procedure in the art is to resmelt the mattes in combination with .clean silica, thereby obtaining higher In the present practice any approximation to the result which I obtain can only be secured by a resmelting 'of the matte with clean silica at great additional expense, since it requires two or more operations instead of one where my apparatus is employed.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a hearth or Crucible for a smelter, a double wall or casing for the same forminga waterespace, extending continuously and en'- tirely around the hearth, a water-supply pipe ALLEN R. PARTRIDGE.

Witnesses: L. W. SEELY,

F. M. BURT.

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