US934532A

US934532A - Metallurgical furnace.

Info

Publication number: US934532A
Application number: US50093509A
Authority: US
Inventors: Robert Huebner
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-06-08
Filing date: 1909-06-08
Publication date: 1909-09-21
Anticipated expiration: 1926-09-21

Description

R. HUBNER.

METALLURGICAL FURNACE.

APPLICATION FILEDJUNE 8,1909.

Patented Se 1, 1909.

H 2 SEE SHEET 1.

WITNESSES:

aw/5% ywzm; BY

INVENTOR R. HUBNER.

METALLURGICAL FURNACE.

APPLICATION FILED JUNE 8, 1909.

93%5326 I Patented Sept. 21. 1909.

2 SHEETS-SHEET 2.

4 mvgmon ITNESSES: 6 W .WQJ/ at Q ATTORN ROBERT misuse, or NEW roan, N. Y.

METALLURGICAL FURNAGE.

Specification of Letters Patent.

Patented Sept. 21, 1909.

Application filed June 8, 1909. Serial No. 506,935.

1'0 all whom it may concern:

Be it known that I, ROBERT HiiBNER, a citizen of the United States, residing at New York city, county and State of New York,

;. have invented certain new and useful Imtudinal section on the line .VV of provements in Metallurgical Furnaces, of which the following is a specification.

My invention more .especiall relates to a furnace desi ned to effect desu furization of ores, althoug it may be used for other puroses.

p In United States Patents Nos. 899,403, dated September 22nd, 1908, and 906,883, dated December 15th, 1908, I have respectively described a furnace for desulfurizing ores and a rocess of desulfurizing ores. My

improved 'u'rnace is an improvement u onthe construction disclosed in my Pa ent 899,403 and is intended-to carry into eflect the process described in my Patent 906,883.

The features of novelty ofmy resent furnace over that describedin'my Fatent 899, 403 consist, in the provision of means for heatin the furnace by the combination of gas an l air under pressure, in the provision of means for localizing the heat atdifl'e'rent portions of the furnace structure, in the pro vision of means for 'aitering the direction of fio w of the products of combustion in the furnace, and generally, in the construction and arrangement of the flues, air passages, etc.

The accompanying drawings will serve to illustrate my invention, in which Figure 1 is a vertical longitudinal section; Fig. 2 is a vertical transvelse section on the line 11-11 of Fig. 1. Fig. 3 is a vertical transverse section on the line III-III of Fig. 1. Fig. 4 is a longitudinal section on the line IVI'V of Fig. 1. Fig. 5 is a longi- F i 1. F ig, 6 is a vertical longitudinal sect ion, showing a modification of Fig. 1.

Referring to the drawings: 5 represents the furnace structure, and as in the furnace described in my Patent No, 899,403, is provided with a grate 6 and a combustion chamber 7. The combustion chamber 7 communicates through the horizontal flues .8, 9,

directly with the vertical chimney flue 10, 3

and indirectly through the horizontal flues 11, '12, 13,

vertical flues

14, 15, and controlling

dampers

16, 17. It will be understood without further description that by manipulation of the

dampers

16, 17, all of

theflues

8, 9, 11, 12, 13 may be thrown into communication with the

chimney flue

10, or 9, 11', 12, 13, separately.

, 18 represents a gas burner adapted to dis charge gas and air under pressure into the furnace chamber 7. V

' 19 represents gas pipe, 20 air pipe, 21-22 controlling valves respectively in the gas and air pipes. I prefer to use gas and air under pressure, respectively in the proportions of one part of gas to one quarter part of air, as this mixture results in a flame of very high temperature. Situated at the opposite side of the furnace, or any convenient locality, are similar burners 23, 24:, 25, adapted to discharge gas and air respectively into the fiues 12, 11, o.

26 represents gas pipe, 27 air pipe, 2829 30 valves in the gas pipe and 313233 valves in the air-pipe. The

burners

23, 24, 25 are preferably situated at the opposite side of the furnace from the burner 18, although they may be placed in any convenient locality.

It will be understood that the

burners

18, 23, 2A, 25 may be used in combination or singly, as desired.

Situated between the

dues

8, 9, 11, 12 are the ore chambers-F, E, D, C, and above the flue 13, the ore chambers A, B. These chambers communicate with the exterior of the furnace through openings closed by doors are all connected to a common pipe 52, con- I nected at its end to the induction orifice of a vacuum pump 53.

The method employed for operatin furnace is as follows: The ore to be the esulfurized is introduced into the chamber A at the tip) of the furnace. This chamber, it will be served, is not in direct communication with any of the heat dues of the furnace, but is separated therefrom by the chamber B. T-his chamber is also somewhat larger than the other chambers, the purpose of which is to permit evaporation of the moisture of the ore, by slow heating, which moisture is drawn off by one of the pipes will be understood without further descripvarious burners, heatin chamber A. After a time the ore is pushed through the opening 45 into the chamber C, and so on rogressively downward throu h chambers E and F, it israwn from the furnace. Itwill be understood that

doors

40, 41, 42, 43, during the operation of the furnace, are luted to preventthe ingress of air, and that the action of the pump 53 is to produce a vacuum or partial vacuum in the ore chambers. It

tion that thevacuum or partial vacuum so produced, prevents the accumulation of the evolved gases in the ore chambers and prev'ents their pressure from efi'ecting therapid evolution of the gases from the ore treated.

To effect desulfurization of the ore it is usually not necessary to carry the ore beyond the chamber E, or in other words, by the time the ore reaches the chamber E, desulfurization has been effected. The desulfurization of the ore may be facilitated by increasing the temperature of the furnace normally due to combustion at burner 18, to combined effect of the combustion at burner 18 and fire on grate 6, through the

burners

23, 24, 25. For certain grades of ore it is consi'deredadvisable to commence the heating slowly and gradually increase the heat as the ore is progressed downward through the furnace structure. With other ores it is advisable to commence the heating slowly, then subject to a high heat,then to a lower heat and then to a high heat.

With still other grades of ore it is advisable I to concentrate the heat at about the center of the furnace. The various heating effects, as before stated, may be accomplished through the conjointemployment of the flues and dampers. The exact direction of t e flow of the products of combustion will of course depend upon circumstances, which will be evident to any one skilled in furnace management, and having a knowledge of the ore to be treated. a

I wish it understood that I do-not limit myself to the specific construction. of the furnace shown and described, as it will be obvious that it may be modified in many particulars without departing from the general features of the invention disclosed.

Having thus described my invention,,l .claim Y 1. A metallurgical furnace, comprising a series of heating flues, a series of ore chambers, achimney flue, a series of gas and air .burners communicating with said heating flues, means for controlling the direction of from which flow of the products ofcombustion through said. furnace and means for controlling the application of heat to said furnace.

2. A metallurgical furnace, comprising a series of heating fines, a series of ore chambers, a chimney flue, a series of gas and air burners communicating with said heating flues, means for controlling the direction of flow of the products of combustion through said furnace, and means for controlling the application of heat to said furnace.

3. A metallurgical furnace, comprising a series of heating flues, a series of ore chambers, alternately disposed, a chimney flue, a series of gas and air burners communicating with said heating flues, means for-controlling the direction of flow of the products of combustion through said furnace, and means for controlling the application of heat to different portions of said furnace.

diflerent portions of 4;. A metallurgical furnace, comprising a series of heating fines, a series of ore cham bers closed against the atmosphere, a chimney flue, a series of as and air burners communicating with said heating flues, an exhaust pump connected to the ore chambers, means for furnace, and means for controlling the application of heat to said furnace. I p

5. A metallurgical furnace, comprising a series of heating lines, a series of communi eating closed ore chambers, a chimney flue, a series of (gas and air burners communicating with sai heating flues, means for controlling the direction of flow of the products of combustion through said furnace, and means for controlling the. application of heatto said furnace.

6'. A metallurgical furnace, comprising a series of heating fines, a series of ore chambers closed against the atmosphere and alter nately disposed, a chimney flue, a series of gas and air burners communicating with said heating flues, means for controlling the direction of flow of the products of combustion through said furnace, and means for controlling the application of heat to different portions of said furnace.

7. A metallurgical furnace, comprising a series of heating fiues, a series of ore chambers closed against the atmosphere, a chimney flue, a series of gas and air burners communicating with said. heating flues, and adapted to deliver gas andair under pressure, means for controlling the direction of flow of the products of combustio through sa d furnace, and means for contr lling the application of heat to different portions of said furnace.

3. A metallurgical furnace, series of heating flues, a series of ore chambers, a chimney flue, a series of gas and air burners communicating with said heating controlling the direction of flow of the products of'combustion through "saidcomprising a of flow of the products of combustion through said furnace flues, and means for controlling the application of heat to different portions of sald furnace.

9. A metallurgical furnace, comprising a series of heating flues, a series of ore chambers, a chimney flue, a series of gas andair burners communicating with the heating flues, dampers for controlling the direction of flow of the products of combustion through said furnace flues,=and gas and air .valves for controlling the application of heat to diflerent portions of said furnace.

10. A metallurgical furnace, comprising a series of heatlng flues, a-series of ore chambers, a chimney flue, a combustion chamber and grate, a series of gas and air burners, means for controlling the direction of flow of the products of combustion through said furnace, and means for control-ling the application of heat to different portions of said furnace.

11. A metallurgical furnace, comprising a series of horizontal heating flues, vertical communicating flues, a series of horizontal ore'chambers, a chimney flue, a series of gas and 'air burners adapted to project a flame into the horizontal flues, means interposed between the horizontal and vertical flues for controlling the direction of flow of the products of combustion through said furnace, and means for controlling the application of heat to differentportions of said furnace.

In testimony whereof, I aifix my signature, in the presence of two witnesses.

ROBERT Ht'JBNER.

Witnesses: I

HELEN E. KoELsoH, WV. A. 'TowNER, Jr.