US912394A - Universal ore-treating furnace. - Google Patents

Description

G. G. MEDBERY.

UNIVERSAL ORE TREATING FURNACE. APPLICATION FILED MAY 11, 1908.

9.1 2,394 Patented Feb. 16, 1909.

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CHAUNOEY O. MEDBERY, OF N EW YORK, N. Y.

UNIVERSAL ORE-TEE ATING FURNACE Specification of Letters Patent.

Patented Feb. 16, 1909.

Application filed May 11, 1908. Serial No. $2,088.

To all whom it may concern:

Be it known that I, CHAUNOEY C. MED- BERY, a citizen of the United States, and a resident of New York, county and State of New York, have invented improvements in Universal Ore-Treating Furnaces, of which the following is a specification.

This invention involves a special construction for a crucible furnace, that is a furnace having an inclosed ore treating chamber, and consists in forming heating lines through the longitudinal walls of the refractory lining of the furnace anc preferably also of a passage in one of the end Walls of the refractory lining into which allof the longitudinal flues open,

combined with means located at the other end of the chamber for supplying fuel to some of the longitudinal flues and means for controlling the discharge of the products of combustion from other of the hues at this fuel supply end of the chamber.

in carrying this invention into practice it is thought desirable to embody it iii-the class of furnaces shown and described in the Letters Patent issued to me No. 788,546 of May 2, 1905, and No. 804,330 of November 14, race, whereby such furnaces are made of universal character, adapted for use in all metallurgical pr cesses and treatment of all kinds of ores.

The accompanying drawings illustrate all the essential features of the invention and will now be referred to in giving a full description thereof.

Figure 1 is a side elevation of a furnace embodying my invention. Fi 2 is an end view of the same. Fi longitudinal vertical section, on 3 rig. 2. Fig. 4 represents a section of t e charging end of the furnace taken at right angles to Fig. 3. Fig. 5 is a transverse sectional view, on line 5, 5, Fig. 3. Fig. 6 is a transverse sectional view, on line 6, 6, Fig. 3. Fig. '7 represents the charging end of the furnace with a discharge pipe attached thereto for use when the furnace is used for suhlinnn purposes, and Fig. 8 is a plan view of the same, showing the end of the furnace in section.

The heating chamber a is of a refractory material formed as a lining to the cylindrical metal shell I), which is provided with circular supporting guide rails c, c, resting on rollers (Z, d, fitted in bearings near the lower corners of the rectangular frame e. 011 the middle horizontal beams of this frame are mounted rollersf, arranged to bear against the sides of the circular rails c, c, as end thrust bearings for the cylindrical furnace to hold it in place when tilted. he frame and furnace with all attachments are carried by circular ways g, g, constituting the base, and provided with series of bearing rollers as beds for the corresponding circular supports h, 75, secured to lower horizontal beams of the rectanframe.

An opening "L at one end of the ylinder is covered by a muffle door j, the small. opening through which is closed by a solid door c. At the other end of the cylinder is fitted and secured a flanged ring Z, to which is also secured the end metal plate m, and in this ring is fitted a water-jacketed end "It, held in place, so that the cylinde rc tie freely thereon, by rollers 0 bearing ago st ils outer surface and rollers 1; bearing a ainst its periphery. Through this water ja ket is formed an opening q at its'lower oart for the admission of fuel to the lining of tie furnace, a central opening 1" for the admission of fuel to the treating chamber and openings 8 at the upper part for the escape of the products of combustion of the fuel to the chimney t which extends over the top and to about the central part of the cylinder under the smoke hood a.

The furnace as shown, is designed to be operated with a gaseous or liquid fuel, the supply pipe o of which is provided with a slipjoint coincident with the aXis of the circular ways and supports 9 and h, and extend along the side of the furnace to the burners or combustion chambers w and :c at the openings q and r of the water-jacket end respectively. At the other side of the furnace is located the air supply pipe y, also provided with a slip joint coincident with the axis of the circular ways and supports 9 and 7t, and this pipe extends upwardly to the discharge end of the chimney t, and surrounds the horizontal part thereof as a casing z, and by pipe connections at the other end of the casing air, heated by the hot chimney, is supplied to the central and lower burners; details of which will be hereafter described.

The main distinguishing feature of this in vention resides in lining the furnace with a refractory material to form a closed chamber and forming through the side walls and extending around the furnace a series of longitudinal flues 1, each at one end alining with the openings in the end plates m, and all of them at their other ends being in communication with a passage 2 formed in the wall of the lining at the charging end of the furnace. This lining may be built up by blocks or bricks suitably formed or perforated to make the fines, or in any convenient way, but it is desirable to have bracket pieces 3 arranged at the passage end of the chamber to roperly strengthen and support the inner wa l at this end; -a ipe 4, also of refractory material, at this end forms the central opening for charging the chamber and for the escape of vapors or'fu'rnes of some processes carried out by the furnace. The furnace is practically a rotatable closed-end drum, the refractory lining is continuous throughout the chamber, that is it covers interiorly the ends and the cylindrical portion of the retaining shell or drum as an integral lining, and does not make any sliding or rubbing connection with any stationary part of the furnace, so that it is only submitted to wear due to the action of the charges of ore &c. in the chamber and the necessary heat to properly treat the charges.

The opening g at the lower part of the water-jacket, also shown by dotted lines in Fig. 6,'is sufficiently long to extend over several of the openings of the flues 1, and on the outside of the water-jacket is secured burner or burner combustion chamber 10, placed in communication with the space in the chimney air casing 2 by a pipe 4, provided with a s'to valve 5, and through this pipe extend fue' nozzles 6, of any desired number, into the combustion chamber w, each one being provided with a regulating valve 7 the ranch pipe which supplies them from the main fuel pipe 42 being provided with a valve 8, whereby the fuel supply to all of the nozzles can be controlled. A branch pipe 9 from the air pipe 4 supplies air to the central opening 7"; this pipe has a stop valve 10, and has extending into it a fuel nozzle 11, connected to the fuel su ply pipe 12 by a branch pi e in which is a va ve 12. There are other va ves &c. shown, but as their functions are readily discernible it is unnecessary to describe them. The water-jacket end, which is held stationary relatively to the rotation of the furnace proper, is provided with water supply and discharge pipes 13 and 14. It has secured to its outer face a casing 15 with a refractory lining covering the discharge openings 8 from the flues 1, and by a sliding joint 16 it connects with the chimney if; this provides for the variable expansion of the diflerent arts without injury thereto; the horizontal portion of the chimney with the air casing 2 being supported by and secured to the top beams of the rectangular frame 6.

The cylindrical shell I) with all its connected appurtenances is rotated by motion imparted to the supporting rollers d, d through the medium of worm wheels 17 and worms or screw gears 18, said worm wheel being secured to shafts 19, each one carrying the set of rollers d on either side of the furnace, and the worms 18 are carried by a shaft 20 transversely arranged in bearings on the lower beams of the frame 6, and having on one of its ends a sprocket wheel 21 which by a suitable chain is driven by a sprocket wheel 22 on a sleeve fitted to rotate on a rod or stud secured to the frame 6 coincident with the axis of the main circular supporting bearings g, h and to this sleeve is secured a' drive wheel 23 actuated from any suitable source of power.

The means for tilting or rocking the furnace on the supporting bearings g, 7i consists of segmental gears 24 secured to the sides of the parts it of said bearings, and into which mesh pinions 25 carried by a shaft 26 having bearing in the base'g, and one end of this I shaft is provided with a worm wheel 27, actuated by a worm 28 on a vertical shaft 29 having bearings on a standard 30. This shaft 29 may be rotated in either direction by any suitable reversing gear; the ordinary bevel wheel and sliding clutch gear 31 is shown in the drawings, power being applied to the pulley 32.

At Fig] 4 is shown discharge spouts 33, and openings extending from the interior of the chamber a; these will be plugged, in the ordinary way, as shown at Fig. 8, when the furnace is in action.

Smelting and refining processes may be carried out by this furnace in manner described in my before mentioned patents, and furthermore it is designed for use in treating ores where a closed heated chamber or crucible construction is required. For such use the charge may be first subjected to the ire tion of the burning fuel from the central burner at the opening 1, the closed door 7r or mufile door being open for the escape of the products of combustion of the central burner and for such of the volatile constituents of the charge as it is desired to drive off, any volatile constituent as can be utilized, condensed, may be collected in usual ways. A means for doing this is shown at Figs. 7 and 8, consisting of a perforated door 34 to be con stituted for the door 7' and which is by a slip joint 35 connected by horizontal pipe 36 having a downwardly extending bend at its other end, which is also provided with a slip-joint 37 forming its connection to a vertical pipe 38; and this pipe, by its lower end, discharges into a condensing chamber of condensing fiues. To prevent excessive heating of the discharge pipe 36 it is provided with a waterjacket, the Water supply and discharge pipes being shown at 39 and 40. The central burner actin in the ore treating chamber may be used alone or in connection with the burners acting in the lines in tl e Walls to pro liminarily heat the furnace before or after the charge has been inserted; but With the use of the furnace as a crucible the central burner Will be out of action; and if the process be one that calls for operation in a crucible simply, then the doors j and 7c will be closed, and the heat required be supplied from the lower burners acting in the flues as they pass during the rotation of the furnace before the combustion chamber of the burners. Now, if the process carriedon in the crucible be subliming proposition, then the discharge pipe arrangement shown at Figs. 7 and 8 will utilized; the slip-joint 35 permitting the retation of the furnace during such operation.

I claim as my invention:

1. A furnace, comprising a retaining shell,

P "3 a refractory lining therefor for ing a co mucus interior cover for its ends and longitudinal portions, constituting an ore heating chamber, flues formed in and extending tlnough the refractory lining, means for supplying fuel under combustion to the lines in the lining, and a discharge opening for the escape of the products of combr. from the flues.

2. A furnace, comprising a cylin taining shell, refractory lining the forming a continuous interior cover for its ends and longitudinal portion constitut l a closed ore treating chamber, fiues f in and extending tl ough the refractory li 11 means at one end of the chamber for sun ing fuel under combustion to some of t e fiues in the lining, and a discharge opening at the same end of the chamber through which the products of combustion pass from other of the fines.

3. A furnace, comprising a cylindrical retaining shell, a refractory lining therefor forming a continuous interior cover for its ends and longitudinal portion constituting a closed ore treating chamber, flues formed in and extending through the refractory lining, means at one end of the chamber for supplying fuel under combustion to some of the lines in the lining, a discharge opening at the same end of the chamber through which the products of combustion pass from other of the lines, a central opening at the other end of the chamber for Ieeding ore thereto, and an opening for tapping molten metal and slag therefrom.

4. A furnace comprising a closed o e treating chamber cylindrical in form with its ends and cylindrical longitudinal Walls integral of refractory material, longitudinal flues formed around the chamber through the longitudinal refractory Walls, a passage formed in the refractory Walls at one end of the chamber and into which all of the longitudinal flues open, means for supplying fuel und combustion to some of the longitudinal lines at the other end of the chamber, and a chimney at this end of the chamber for carrying off the products of combustion from other of the fines.

5. A furnace comprising a closed cylindrical ore treating chamber of refractory material with its end Walls and cylindrical. longitudinal ir -s integral, longitudinal fines formed around the chamber through the longitudinal r "'ractory walls, a passage formed in the refractory walls at one end of the chamber and into which all of longitudinal flues open, a central opening provided with a mufiie door at this end of the chamber, means for supplying fuel under combustion to some of longitudinal lines at the other end of the chamber, means for supplying fuel to the interior of the chamber tlnougl'i a central opening at this end of it, and a chimney at this end of the chamber for carrying off he products of combustion from oth of the fines.

6. A furnace comprising a closed cylindrical ore treating chamber formed of refractory material *ith its end walls and cylindrical longitudinal walls integral, means for rotating it, fiues formed in the longit l nal vxalls of the chamber, means for supplyfuel under combustion successively to the fines, and a chimney for l products of combustion 'rom the dues.

7. A furnace comprising a closed cylindrical ore treating hamber formed of a refractory material with its end Walls and cy lindrical longitudinal Walls inte 'al, means for rotating it, in ans for setting it in a; ferent angular positions, flues foled in the longitiuilinal Wall of the chamber, means for supplying ael under combustion successively to the flues, and a chimney for carrying off the products of combustion from the lines.

8. A rnace, comprising a c taining'sholl, a continuous re coveri the ends and the cy eonstitut g closed ore treating chamber, means for rotating it, 16MB for setting it in different angular posi ions, formed in and extendin through the ieiractory lining, means ore end of the chamber for supplying fuel under combustion to some of th fiues in the lining, and a discharge opening at the same end of the chamber through which the products of combustion pass rom other of l fines.

A furnace comprising a cylindrical retaining shell, a refract ry lining Insing fuel under combustion to some of the dues in the lining, a discharge opening at the same end of the chaml' er through which the products of combustion passfrom other of tne dues, a central opening at the other end of he chamber for feeding ore thereto, and an opening for tapping molten metal and slag therefrom, means for rotating the furnace, and means for setting it in different angular positions.

10. A furnace comprising a closed cylindrical ore treating chamber of refractory material with its end walls and cylindrical longitudinal walls integral, means ror rotating the chamber, means for setting it n different angular positions, lor at flues formed around the chamber rough the low gitud nal refractory walls at one end of chamber and into which all of the lon itudinal flues open, means for supplying fuel under comlmstion to some of t e longitudinal nucs at the other end of the Mamber, and a c. 11-- ney at this end of the chamber for carrying off he products of combustion other of the fines.

13.. A furnace comprising a closed cylindrical ore treating chamber of refractory material with its end walls and cylindrical lon itudinal walls inte ral lon itudinal fi'ues tn 2: 7 formed around the chamber :ougn the longitudi al refractory walls, a passage forn'icd m refractory wa s at one end of the 1 1 7 '1 f chamber and into wnlcn all of the long-rt udinal flues open, a centrr opening provided with a muffle door at tins end of the chamber, means for supplying fuel under combustion to some of *ie longitudinal es at he other end of the chamf'ser, means for supplying fuel to the interior of the cliam'oer tlilrougli a central opening at tins end of it, a chimney at 111218 end of tee Gila-111 .01 for carrying oil the products of combustion f om other of the fines, means for setting tee chamber in dillerent angular aositions, nd means for rotating it.

lid.

A furnace COIHPHSIH a drical ore treating chair material with its end walls and c n d longitudinal walls int i formed d the c gitudinal refractory we a pass? in the refractory wall at one end ol her into which all of longitud flu-es open, an air pipe connectec to the other end of the chan her by mea s of rotary slipjoint and arranged to dzscl'sarge into some of the fines, a fuel supply ROZS'AG in be discharge end of the air pipe, clnrnney at t end of the cl umbr also connected to t1; slip-joint and into which Otll r of tile flues discharge products of con ustion, means for rotating the chamber, and means for setting it in different angular positions.

13. A furnace comprising a closed cylindrical ore treating chamber of refractory arranged to discharge into some of the fines,-

a fuel supply nozzle in the discharge end of the air pipe, means for su )plying fuel to the interior of the chamber a so carried by the slip-joint, a chimney at this end of the cham her also connected to the slip-joint and into which other of the fines discharge products of comlmstion, means for rotating the chamber, and means for setting it in different angular positions.

14. A furnace comprising a cylindrical shell, a refractory lining therefor constituting a closed ore treating chamber of refractory material, flucs formed around the chamber through the longitudinal refractory walls, a passage formed in the refractory wall at one end of the chambe into which all of the longitudinal ilues open, a water-jacket end held in the cylindrical shell at the other end of the chamber by an anti-friction slip-joint, and provided with an. opening at its lower part communicating with some of the fines and openings at its upper part communicating with other of the lines, a chimney connection inclosing the upper openings, a combustion chamber inclosing the lower opening, air and fuel supply pipes arranged to discharge into the combustion chamber, and means for rotating the furnace.

15. A furnace comprising a cylindrical shell, a refractory lining therefor constituting a closed ore treating chamber of refractory material, longitudinal flues formed around the chamber through the longitudinal re- "rectory walls, a passage formed in the reractory wall at one end of the chamber into which all of the longitudinal ilues'open, a watenjacliet end held in the cylindrical shell t the other end of the chamber by an antiriction slip-joint, and provided with a central 0 extending into the ore treating chamber, an opening at its lower part communicating with some of the fines and openings at upper part communicating with,

by a slip-joint, a fuel supply device connected to the end piece, a chimney connected to and extending upwardly from the end piece and then horizontally over the top of the treating chamber With its exit extendin upwardly about centrally over the chamber, an expansion or slip-joint between the vertical and horizontal parts of the chimney, and means for holding the end piece from rotating with the cylindrical treating chamber.

17. A furnace comprising a cylindrical ore treating chamber, means for rotating it, an end piece carried at one end of the chamber by a slip-joint, fuel supply device connected to the lower part of the end piece, a fuel supply device connected to the central part of the end piece, a chimney connected to the upper part of and extending up Wardly from the end piece and then horizontally over the top of the treating chamber with its exit extending upwardly about centrally over the chamber, an expansion or slip-joint between the vertical and horizontal parts of the chimney, and means for holding the end piece from rotating With the cylindrical treating chamber.

18. A furnace comprising a cylindrical ore treating chamber, means for rotatin it, an end piece carried at one end of the chamber by a slip-joint, fuel supply device comprising air and oil supply pi )es connected to the end piece, a chimney con: ected to and extending up-arardly from the end piece and then horizontally over the top of the treating chamber, an air aclret surrounding the chimney, and a pipe connection therefrom to the air pipe of the fuel supply device, an expansion or slip-joint between the vertical and horizontal parts of the chimney, and means for holding the end piece from rotating with the cylindrical treating chamber.

19. A furnace comprising a cylindrical ore treating chamber, means for rotating it, an end piece carried at one end of the chamber by a slip-joint, a fuel supply device connected to the end piece, a chimney connected to and extending upwardly from the end piece and then horizontally over the top of the treating chamber with its exit extending upwardly about centrally over the chamber, an expansion or slip-joint between the vertical and horizontal parts of the chimney, means for setting the furnace in difierent angular positions, and means for holding the end piece from rotating with the cylindrical treating chamber.

20. A furnace comprising a cylindrical ore treating chamber, means for rotating it, an end piece carried at one end of the chamber by a slip-joint, a fuel supply device comprising air and oil supply pipes connected to the end piece, a chimney connected to and extending upwardly from the end piece and then horizontally over the top of the treating chamber, an air jacket surrounding the chimney, and a pipe connection therefrom to the air pipe of the fuel supply device, an expansion or slip-joint between the vertical and horizontal parts of the chimney, means for holding the end piece from rotating With the cylindrical treating chamber, and means for setting the furnace in different angular positions.

21. A furnace comprising a cylindrical ore treating chamber, a frame in which it is held, circular supports attached to the under side of the frame and corresponding circular Ways constituting the base of the furnace, means for rocking the circular supports in the circular Ways, an end piece carried at one end of the chamber by a slip-joint, a fuel supply device connected to the end piece, a chimney connected to and extending upwardly from the end piece and then horizontally over the top of the treating chamber with its exit extending upwardly about centrally over the chamber, an expansion or slip-joint between the vertical and horizontal parts of the chimney, and means for holding the end piece from rotating with the cylindrical treating chamber. I

22. A furnace comprising a cylindrical retaining shell, a refractory lining therefor constituting a closed ore treating chamber, flues formed in and extending through the refractory lining, means at one end of the chamber for supplying fuel under combustion to some of the lines in the lining, a discharge opening at the same end of the chamber through which the products of combustion pass from other of the fiues, a central opening at the other end of the chamber for feeding ore thereto and for the escape of volatile constituents of the ore, a muffle door for closing said opening, a pipe connected to the door by a slip-joint connection, means for rotating the chamber, and an opening for tapping molten metal and slag therefrom.

23. A furnace comprising a cylindrical retaining shell, a refractory lining therefor constituting a closed ore treating chamber, flues formed in and extending through the refractory lining, means at one end of the chamber for supplying fuel under combustion to some of the lines in the lining, a discharge opening at the same end of the chamber through which the products of combustion pass from other of the fines, a central opening at the other end of the chamber for feeding ore thereto and for the escape from the chamber of volatile constituents of the ore, a Wateracketed pipe with a slip-joint connection to a door adapted to cover the central opening, said pipe extending into a fume condensing chamber or lines, means for rotating the chamber, and an opening for tapping molten metal and slag therefrom.

24. A furnace comprising a cylindrical ore treating chamber, means for supplying fuel at one end of it, a central opening at the other end, a perforated door adapted to cover the subscribed my name this 7th Clay of May central opening a horizontal pipe With a 1908. slips-joint connection attached to the ,door

and a vertical fume condenser pi e to which CHAUNCEY MEDBERY' 5 the horizontal pipe is connecte by a slip- Witnesses:

joint, and means for rotating the furnace. J. C. MoKIBBIN,

In testimony whereof, I have hereunto M. TURNER.

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