US1108821A

US1108821A - Smelting-furnace.

Info

Publication number: US1108821A
Application number: US59856210A
Authority: US
Original assignee: PHILIP H HOLDSWORTH
Current assignee: PHILIP H HOLDSWORTH
Priority date: 1910-12-21
Filing date: 1910-12-21
Publication date: 1914-08-25
Anticipated expiration: 1931-08-25

Description

W. E. WILLIAMS.

SMEL'IING FURNACE.

APPLIOATION IILLD DEC. 21, 1910.

Patented Aug. 25, 1914.

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THE NORRIS PETERS CCL, PHOTO-LITHO., WASHINGTON. D. C.

W. E. WILLIAMS.

SMELTING FURNACE.

APPLICATION FILED 1120.21, 1910.

1,108,821. Patented Aug.25,1914

2 SHEETS-SHEET 21 avwemtow THE NORRIS PETERS CO.. PHOTO-LITHO. WASHINGTONv D. C

entrain orricn WILLIAM E. VIILLIAMS, OF l/IASSILLOlii', @1110, ASSIGNOR OF ONE-HALF T0 PHILIP H. I-IGLDSVJTQRTH, OF SEATTLE, Ed 'ASHINGTON.

SIvIELTING-FURNACE.

Application filed December 21, 1910.

Specification. of Letters Patent.

Patented Aug. 25, 1914:. Serial No. seaeee.

To all whom it may concern Be it known that 1, WILLIAM E. VVIL- Lnuus, a citizen of the United States, residing at Massillon, in the county of Stark and State of'Ohio, have invented new and useful IDIPIOVGHIGDtS in Sinelting-l urnacea of which the following is a specification.

This invention relates to smelting furnaces in which is obtained a cupola furnace and a horizontal furnace, the cupola or vertical portion or part of the furnace as whole being over the horizontal portion of the furnace, or more specifically the horizontal portion of the furnace. said vertical and horizontal furnaces constituting a selfcont-ained or smelting furnace.

()no object of my invention is to consume a large percentage of the calorific power of the sulfur volatized. It is known to those skilled in the art that pyrite ores contains suflicient fuel, sulfur and iron to smelt themselves, but in the furnaces heretofore produced it has been impossible to utilize to the best advantage all of the heat produced by the natural fuel contained. in the ores.

Another object of my invention is to prevent the loss of heat generated by the naturzl fuel contained in the ores and carried off by gases.

\Vith these objects in view and others readily apparent to those skilled in the art l attain by the peculiar construction illustrated in the drawings in which- Figure 1 is a vertical longitudinal section l! 2 is a vertical transverse section on line 1 1, Fig. 1. 3 is a fragmentary side elevation with the vertical or cupola portion of the furnace broken away and also horizontal furnace broken or removed, said figure being a partial side elevation of the hot air chamber and the lower or grate portion of the vertical or cupola portion of the furnace.

Tllhroughout the drawings similar numerals of reference indicate similar parts.

The numeral 1 represents the cupola or vertical portion of the furnace proper which is constructed in the usual manner so far as the walls of the cupola are concernech reference being had to the installation and arrangement of the various improvements going to make up a complete furnace in accordance with my invention. In the lower portion of the vertical part or portions of the furnace proper are located two series of grate-bars 2 and 8, which grate-bars are arranged substantially as shown in Figs. 1 and 2 and as shown the upper series of grate bars 2 constitute the bottom of the vertical furnace or cupola and the lower grate bars 8 constitute the top or crown of the lower or horizontal. furnace 4-, or more specifically the top of the horizontal furnace located directly below the vertical portion of the furnace. The upper series of grate-bars 2 are for the purpose of supporting the ore and fueh which ore and fuel is placed in the vertical portion of the furnace or more specifically the cupola portion or part of the furnace in the usual manner and as the ores are smelted or reduced and the metal contained in the ore brought into a liquid state, or semi-liquid state it passes between the spaced grate bars 2 and in its downward passage it comes in contact with the top or upper edges of the grate bars 3.

For the purpose of more effectually separating, or what might be termed spraying the metal during its downward passage, the grate bars 3 are located directly below the openings or spaces between the upper gratebars 2; that is to say the grate-bars n and 3 are staggered with reference to each other and consequently the spaces as between the upper and lower series of grate bars are also staggerech by which arrangement the metal is prevented to a large extent from falling in straight lines, as it passes from the bottom of the cupola portion of the furnace down and into the horizontal portion of furnace.

For the purpose of dividing the melted metal into small or comparatively small streams and at the same time better distributing the fall of metal between the upper pirate bars 2, the tops of said grate bars are beveled so as to form oppositely inclined tops which inclined tops shuntthemetalin opposite directions. A. further object in beveli the tops of upper series of grate bars to provide comparatively narrow ridges and hold the solid or unm lted part of the ore in such a manner that the draft will not be liable to become out off. This usual manner.

and 1 result is brought about by reason of the fact that the top edges of the grate bars do not present plain or level edges upon which the metal or other liquids can accumulate to any great extent.

It will be understood that as the smelting cing process is continued the molten in the lower portion of the cupola or vertical )ortion of the furnace will find way into the horizontal or reverberatory i1 nae-e, and the metal will find its way to the bottom of the horizontal furnace and is drawn oil through the aperture 6 in the it will be understood that the lighter or perhaps more specifically the namanetallic portion contained in the ore known slag will float upon the metal and pass off tln'ough the opening 7. From the horizontal furnace extends the horizontal flue 8, which flue leads into and communicates with the main stack 9. It will be understood that by GXtQDCllITI the fine 8 from the horizontal furnace sl which is below the cupola or vertical portion of the furnace a down draft will be produced.

Below the horizontal furnace i is located the chamber 10., which chamber is for the nil-pose of receiving the slag and from which chamber the slag flows out through the aperture 11. Pros above the level of the slag line and from the chamber 10 the flu-es 12 extend upward and open into the \drtical or cupola portion of the furnace above the top or upper series of grate bars by which arrangement the hot air contained in the slagchamber 10 is conveyed upward and utilized for the purpose of combustion and reduction. the location and arrangement of the fines 12 being best illustratcd in Fig.

, fit one side of the cupola or vertical portion of the furnace and above the horizontal portion 1 is located the chamber 13, which chamln roceivesand retains a portion of the waste heat from which leads the flues 14 the dues 1 1 returning to and communicating with the fines 12 at their top or upper ends and the fines 15 opening into the cupola between the grate bars 2 and 3. For the purpose of admitting atmospheric air into the hot air chamber 18 the damper 1G provided, and by providing the damper 16 the amount of hot air taken from the hot air chamber 13 through the lines 1 1 and 15 and hence the temperature, can be regulated, th rel y providing means for proper combustion and at the same time regulating the degree of heat at the place or point of re ducticn, thereby preventing the overheating of the metal and avoiding the danger of injury by any overheating. In some instances it may be of ii'nportance to admit cold air into the horizontal furnace and for the purpose of admitting cold air the damper 17 is provided and for the purpose of admitting atmosphereic air into the slag chamber 10 the dampers 8 and 15) are provided. It will be understood that the chamber '13 obtains its heat from the waste heat arising from the horizontal furnace and the fuel portion of the vertical furnace or cupola.

For the purpose of cutting off the draft created by the stack 5) from the slag chamber, the damper 20 is provided, which damper when partially opened will allow the gases to pass from said slag chamber through the horizontal furnace.

It will be understood that provision should be made for holding the reduced metal in the bottom or lower portion of the horizontal furnace 1 in such a manner that the damper 17 can be opened without allowing the metal to pass out through said damper and in order to provide for this the retaining or end wall 21 is provided. It will also be understood that provision should be made for cleaning the horizontal furnace from. time to time and especially when the furnace becomes cooled and the slag contained in the slag member and the material located in the horizontal furnace becomes solidified and in order to provide for thus cleaning the furnace the doors or openings 22 which are shown conventionally are pr0- vided and the material contained in the slag member may be removed through the openings 23 and 24-. i i

It is well known that in the smelting of ores by the use of furnaces in which the carbon monoxid and other gases are allowed to escape their utility is lost and the present invention is designed to utilize the natural fuel existing in ore and in order to accomplish this beneficial. result and to utilize this natural fuel. in the most advantageous manner, the gases which are produced by the smelting process are conveyed from the vertical or cupola portion ofthe furnace to the horizontal. or reverberatory furnace the fuel thus taken from the vertical or cupola portion of the furnace is used in the further and better reduction of the metal and is brought into the horiztmtal furnace at a point where the combustion will produce the best and most eflicient results. in order to thus convey the gases from the vertical or cupola portion of the furnace to the horizontal furrace the flue is provided which flue leads from the top or upper portion of the vertical or cupola portion of the furnace down and into the threat of the horizontal furnace 4, at which point the gases come in contact with atmospheric air through the damper 17 or pie-heated air admitted by means of the damper 20 from slag chamber 10, thereby completely OXlCllZlllg the gases thus conthe ore.

i or the purpose of regulating the down draft of the flue the damper is prolt will be understood that the ordinary and usual devices for placing ore and fuel in at the top of the vertical or cupola portion f the furnace and also closing the top of said vertical or cupola portion of the furnace must necessarily be employed, which are shown conventionally in Fig. 2, but owing to the fact that such devices are in common use and well known in the art no description is deemed necessary.

For the purpose of creating the down draft in the flue 25 the top or upper end of the cupola or vertical portion of the furnace is provided with the opening 26 which opening may be regulated as to size in the usual manner, that is to say an ordinary damper.

It will be understood that by extending the draft line 8- from the top of the horizontal furnac the action of said flue will be to create a down-draft from the vertical portion of the furnace by means of which the gases drawn from the top of the horizontal furnace through the flue 25 will be held against any upward draft, thereby holding to a certain extent said gases in such a position or relationship that they will better act in the reduction of metal after the same has passed, or during the time it is passing from the vertical furnace to the horizontal furnace or in other words maintaining what might be termed an equilibrium by reason of the opposite directions of the draft created by the draft of the fines 8 and 25.

By providing the openings 22 provision is made for repairing from time to time the horizontal furnace and at the same time skimming and poling. It will be understood that considerable heat will pass from the horizontal furnace up into the cupola or vertical portion of the furnace which heat is utilized in reducing the ores contained in the vertical furnace thereby to a large extent utilizing what might be termed waste heat.

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

1. In a smelting furnace consisting of vertical and horizontal portions, a slag chamber located below the horizontal portion, a chamber adapted to be heated by the vertical and horizontal portion of the furnace, air flues leading from the slag chamber upward and into the vertical portion of the furnace and air flues leading from the chamber heated by the vertical and horizontal furnace, said latter fines leading into the flues extended from the slag chamber to the vertical furnace and grate bars located intermediate the vertical and horizontal portion of the furnace, substantially as and for the purpose specified.

2. In a smelting furnace consisting of vertical and horizontal portions, a slag cham ber located below the horizontal portion, a chamber adapted to be heated by vertical and horizontal portions of the furnace, air fines leading from the slag chamber upward and into the vertical portion of the chamber and an air flue leading from the chamber heated by the vertical and horizontal furnace, said latter flues leading into the fines extended from the slag chamber to the vertical furnace and two series of grate bars located intermediate the vertical and horizontal portion of the furnace, substantially as and for the purpose specified.

3. In a smelting furnace consisting of vertical and horizontal portions, a slag chamber located below the horizontal portion, a chamber adapted to be heated by vertical and horizontal portions of the furnace, air flues leading from the slag chamber upward and into the vertical portion of the chamber and an air flue leading from the chamber heated by the vertical and horizontal furnace, said latter flues leading into the fines extended from the slag chamber to the vertical furnace and two series of staggered grate bars located intermediate the vertical and horizontal portion of the furnace, substantially as and for the purpose specified.

A smelting furnace consisting of vertical and horizontal portions located in 0perative relationship with reference to each other, a draft flue leading from the top of the horizontal furnace, a down draft flue leading from the top of the vertical furnace and extending to the top of the horizontal furnace and at the opposite end from the first mentioned draft flue and grate bars located intern'iediate the horizontal and vertical furnaces, said last mentioned flue opening into the horizontal furnace below the grate bars, substantially as and for the purpose specified.

A smelting furnace consisting of vertical and horizontal portions located in operative relationship with reference to each other, a draft flue leading from the upper portion of the horizontal furnace, a down draft flue leading from the top of the vertical furnace into the horizontal furnace and two series of grate bars located intermediate the horizontal and vertical furnace, the upper series of grate bars provided with beveled tops, substantially as and for the purpose specified.

6. IL smelting furnace consisting of vertical and horizontal portions located in op erative relationship with reference to each other, a draft flue leading from the upper portion of the horizontal furnace, a down draft flue leading from the top of the vertical furnace and communicating with the horizontal furnace, two series of grate bars located intermediate the horizontal and ver- In testimony that I claim the above, I have hereunto subscribed my name in the pres- 1 enee of two Witnesses.

WILLIAM E. WILLIAMS.

tical furnaces, said grate bars spaced from each other and located in staggered relationship With reference to each other and the flue leading from the top of the vertical furnace extended and communicating with the \Vitnesses:

horizontal furnace, substantially as and for SYLVIA BORON, the purpose speclfied. F. W. BOND.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.