US586910A

US586910A - mcdonald

Info

Publication number: US586910A
Authority: US
Publication date: 1897-07-20
Anticipated expiration: 1914-07-20

Description

(No Model.; l 2 sheets-sneer 1. J.- D. MoDONALD.

SMELTING FURNAGE. No. 586,910. Patented July 20, 1897.

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J. D. McDONALD.

-SMELTING PURNAGE.

No1 586,91 O Patented July 20 1897.

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` WlT/VESSES UNITED STATES PATENT Trice.

RICHARD wATsoN DEMoREsnIoF, SAME PLACE, AND RINALDo McooN- NELL, or MAL'rAwA, CANADA.

sMELTlNe-FURNAc-E.

` SPECIFICATION forming part of Letters jlatent No. 586,910, dated July 20, 1-897. Application tied May 18,1896. sain No. 59 1,9s2.` (Nomad.)

To all whom t may concern: Be it known that I, JOHN D, MCDONALD, a citizen of the United States, residing at Sudbury, Ontario, Canada, have invented a new and useful Improvement in Smelting-Furnaces,of which the followin gis a specication.

My invention is an improvement in smelting-furnaces, and has .for an object, among other improvements, to provide anovel apparatus wherebyto secure a continuous combustion with or without the continuous use of carbonaceous fuel, to secure a steady feed of the ore and an efiicient controlfof such feed by the lateral vibration thereof; and the invention consists in certain novel constructions and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In the drawings, Figure l is a vertical longitudinal section of a furnace embodying my improvement. Fig. 2 is an elevation of the crucible end of said furnace, parts being broken away. Fig. 3 is an elevation of apart of the feed end of the furnace. Fig. 4 is a cross-sectional view of the furnace on or about line 4 I of Fig. l. Fig. 5 is an enlarged detail View illustrating the ore-feeding devices and the vibrating mechanism. Fig. 6 is a vertical longitudinal section drawn through the crucible and the inclined plate leading thereto. Fig. '7 is a section on about line 7 7 of Fig. 2.. Fig. 8 is a detail side view of the vibrating ore-supporting table. Fig. 9 is a detail view of one of the transverse slides for use in inserting and removing the feeder from the furnace, and Fig. l0 is a-detail View showing the connection between the sections of the feeder.

In carrying out my invention I have soughtto provide a simple apparatus f or use in smelting pyrites, blend, sulfurets or sulfids, or other ores with or without the continued use of carbonaceous fuel.

In constructing the furnace I build a suitable brickwork or other foundation A to furnish a bed B, which inclines from end to end and may be of any suitable length, according to the capacity of the furnace or the character of the ores to be treated or the quality of the output, and at a suitable distance 4above this bed B, I provide the arch or roof C, formi ing a flue D, which extends from end to end overthe bed B and communicates near its upper end with the flue E, which leads into thestack F, as shown in Fig-l.

The hanging damper G controls that portion of the flue D 'above the junction of the flue E and may be manipulated from the front end of the furnace through the infeed door I-I', as will be readily understood. The front end of the flue D is closed by the front or plate H, having a suitable door, and such front II is bolted or otherwise secured in'place so it may be conveniently removed when it is desired to insert or withdraw the feeding devices presently described.

Upon the bed B and extending from end to end thereof I provide rails, forming ways B for the feeding-carriages, and these ways are broken out at bat such intervals `that'the wheels of the feeding-carriages will come opposite the broken-out portions b when the feeding-carriages are adj usted to position for use, as shown in Fig. l. Topermit the insertionvof these carriages and their ready removal without the jolting and difiiculties `which would result from the cut-out portions h, I provide the slides b2, which extend transversely ofthe furnace and have a handle portion b2 outside the furnace, by which they vmay be adj usted as desired. These slides operate in the notches or cut-out portions b and when in the position shown in Fig. 9 ll the notches b,so that rails B are made practically continuous. This is the position in which the slide is adj usted when the feed-carriage is be ing inserted in the furnace.

, Vhen the carriage has been inserted to the position shown in Fig. l, the several slides are moved out to the dotted position shown in Fig. 9, so the wheels of the carriage will rest in the cut-out portion b, so the carriages may be vibrated laterally on the 'swinging carrier presently described. These swinging carriers consist of links I, pivoted at i at their upper ends, extending down through boxesI and having at their lower ends hooks I2, forming seats for the feeding-carriages, such feeding-carriages and the hooks, as well as the contacting portions at the pivot of the Swingin g link I, being provided with Wearplates i', which may be of any suitable construction. These links I, of which I employ any suitable number for each carriage-section, serve to support such carriage-sections when they have been adjusted to position with their wheels above the cut-out portions b of the ways and suspend the carriage-sections when in such position, so they may be swung freely in a lateral direction by means of connections with the eccentrics J on the shaft J, which eccentries maybe adjusted on the shaft to swing the several carriage-sections either together or reciprocally or otherwise, as may be desired. The eccentric J/is connected with the carriage by means ofasuit able rod or pitman united at one end with the eccentric in the usual manner and connected at its other end with lugs depending from the carriage by means of a bolt, as best shown in Fig. 5, or in other suitable manner. The swinging links I pass down through the boxes I', which may be cast and suitably built into the furnace-wall, and these boxes I are provided in their lower edges with grooves I3, which communicate with corresponding grooves in the roof of the fine and receive the dust-guard plate upon the carriage, as will be presently described.

The carriage comprises one or more sections, and for convenience in casting it is preferred to make it in several sections, each constructed as I will now describe. I make the carriage-sections with a main frame in the form of a water-jacket, having a base portion K and upright side portions K communicating therewith, such main portion having at its opposite ends lug-like portions K2, which rest in the hooks I2 of the swinging links, and having between its ends bracket-lugs K3 for the wheels K4 and lugs K5, perforated for the passage of the bolts, by which the adjacent carriage-sections are secured together. In connecting the adjacent sections of each carriage so the water in both may circulate it may be preferred to effect such connection by means of a tube or tubes, as shown in Fig. ld, such tube KG being packed by Babbitt metal or other suitable packing, if desirable or necessary. The inlet and outlet pipes for water for the cooling-jacket may be arranged as shownin Fig. l or in any othersuitable manner. Upon the innerfaces of the upright portions K, I provide the ribs K7, arranged a short distance above the base K and serving to secure upon such base the false wear-plate KS, which rests upon the waterjacket base K and protects the same from wear. Upon the upper ends of the side portions K', I secure by bolts or otherwise the dust-guard plates K, which extend up within the grooves I3, before described.

In the operation of the described construction the ore is fed in at the gate II onto the upper end of the carriages constituting` the feed devices and passes down the same with greater or less speed, as desired, the speed being` controlled by the rapidity of the vibration given to the swinging carriages, which may be accomplished by the mechanism before described. In its passage down the flue D the ore will be heated by the heat'rising from the crucible presently described and passing up the iue D and thence out the ilue E, and it is manifest that the temperature of the ore when delivered into the Crucible may be higher or lower, according to the time consumed in the passage of such ore over the swinging carriages,which time, as before suggested,may be regulated by the speed at which the carriages are Vibrated. At the lower end of the feed devices the ore is delivered by a spout L onto the upper end of the doublewinged inclined plate M, which has a lower wing M' alongside and around the lower edge of the mouth of the crueible and a wing M2 leading up from the wing M/ to receive the ore from the spout Il. The inclined plate M is water-jacketed and is connected with the erucible N by means of the ring N', encircling the mouth of the Crucible and bolted to the top flanges of the crucible and to the upper and lower section of the waterjacket of the plate M. This crucible N has the air-box O, twyers O, mud-port O2, and legs O3, and is open at its upper end or mouth to receive the ore from the inclined plate M.

On the inclined plate M immediatelyabove the mouth of the erneible I provide the de- Hector P, having the sides p, which diverge from its upper end to the opposite sides of the crueible and tend to deflect the ore in such manner that it will in flowing down the inclined plate pass off to one side and be directed into the opposite sides of the crucible instead of into the higher rear end thereof. The purpose of this detlcetor is to prevent the ore from clogging in the mouth of the crucible and also to avoid subjecting the tine particles of the ore to the direct action of the tierce blast which leads upward from the crucible, as will be readily understood.

As seen in Fig. l, the crucible end of the furnace is closed and the smelted ole maybe discharged through the well connection at Q.

In the treatment of fusible ores, such as sulfurets orsultids, it will be understood that after the furnace has been started by means of a fire in the crucible of coke or other fuel it may be continued without the use of separate fuel by the combustion of the particles of theore; also, that the temperature at which the ore is delivered into the Crucible may be controlled by the manipulations of the feeding devices, as before described.

In controlling the discharge of the ore to the crucible I provide a slide or gate R, movable upon the lower wing of the inclined plate M and suitably operated, preferablyby means of screws R', leading outside the furnace. It is preferred to arrange these gates in pairs, two at each side of the mouth of the cruciblc, and to control the several gates independently, such gates being hinged at their outer edges and movable at their inner edges toward and from the mouth of the crucible, and

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so enable the ore to be discharged to anysuitable point within the said crucible.

To avoid wear of the inclined plate M, I provide a wear-plate M2, held removably therein, which can be cheaply renewed when worn.

By arranging the ga-tes in pairs, one above the other, the gates may be manipulated to direct the ore into the upper or lower part of the mouth of the crucible, as may be desired.

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

1. In a smelting-furnace, the combination of the rails or ways having notched or cut-out portions, the feeding-carriage.moving on said ways or rails and the hangers arranged to support the carriage when it drops in the notches or cut-out portion, substantially as shown and described.

2. The combination of the bed, the ways or rails thereon cut out or notched as described,

'the swinging links forming hangers, and the carriage arranged to rest in said hangers when the wheels rest in the notches or cut-out portion of the ways or rails, substantially as shown and described.

3. In a smelting-furnace the crucible having its mouth inclined and provided with an inclined plate having portions extended alongside the mouth of the crucible substantially as shown and described.

4. The combination of thejacketed crucible,

. the ring surrounding the mouth thereof, and

the jacketed inclined plate having its upper and lower sections secured above and below said ring-plate, substantially as shown and described.

5. In a smelting-furnace, the combination with the crucible and the inclined plate leading to the mouth thereof, of a detlector arranged on said plate in advance of the mouth of the crucible and adapted to direct the material to the sides of the mouth of the said crucible,. substantially as set forth.

6. In a smelting-furnace, the combination of the furnace wall or frame, having longitudinal side grooves, the feed-carriage having at its sidesl dust-guard plates operating in the grooves of the furnace walls or frame, means for suspending said feed-carriage and means for vibrating the same', substantially as set forth.

7. The combination of the feeder comprising the suspended ore-carriage with the tine leading to the stack or uptake and the hanging damper arranged over the carriage and in advance of said flue, substantially as and for the purpose hereinbefore set forth.

. 8. The combination of the line leading to the stack or uptake, the hanging damper and ore-carriage with the suspended hook-links supporting the carriage, the damper being arlrangved over the carriage and in advance of the flue leading to the stack, substantially as and for the purpose hereinbeforeset forth.

9. The combination of the ore-carriage having the wheels with the rails having the slots or cut-outportion and means whereby to suspend said carriage with its wheels in the slots or cut-out portions, substantially as set forth.

l0. The combination of the ore-carriage and notched or cut-out rails, with the slide operating transversely of said rails and means for suspending the carriage, substantially as set forth.

ll. The combination of the ore-carriage, notched or cut-out rails, the slides operating transversely of the rails and the dust-guards extending lengthwise of said carriage, substantially as set forth.

l2. In a smelting-furnace, a feeding-carriage having its frame formed with base and upright side sections made hollow and forming Water-jackets substantially as shown and described.

13. The combination of the feeding-carriage, the links suspending such a carriage, the furnace-walls and the boxes builtin the furnace-walls and formed with chambers through which the links are passed and in which they swing substantially as shown and described.

14. The combination of the feeding-carriage, the crucible below the lower end of said carriage, the inclined plate and the divider or defiector, said plate and divider being above the mouth of the crucible, substantially as set forth.

l5. In a smelting-furnace, a Crucible having its mouth inclined from its upperto its lower side and a plate coinciding with said mouth and extending alongside and from the IOO upper to the lower side thereof substantially as shown and described.

1G. The combination with the Crucible and the inclined plate at the mouth thereof, of the divider or deflector on said plate above the mouth of the crucible and the slides or gates arranged ou said plate alongside the mouth of the crucible, substantially as set forth.

1'7. In an apparatus substantially as described, the ore-carriage consisting of the frame having jacketed base and upright portions and having the latter provided on their inner faces near the surface of the base with inwardly-projecting ribs, and the wear-plate resting on the base of said frame and held beneath the ribs of the upright portions substantially as shown and described.

JOI-IN D. MCDONALD. v Witnesses:

F. F. LEMIEUX, R. W. DE Monnsr.`

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