US474019A

US474019A - Apparatus for roasting and smelting

Info

Publication number: US474019A
Authority: US
Publication date: 1892-05-03
Anticipated expiration: 1909-05-03

Description

3 Sheets-Sheet 1.

(No Model.)

B. & W. LANYON. APPARATUS FOR ROASTING AND SMELTING.

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(No Model.) 3 Sheets- Sheet 3.

. R.-H. & W. LANYON.

APPARATUS FOR ROASTING AND SMELTING.

.No. 474,019. Patented May 3, 1892.

UNITED STATES PATENT OFFICE.

ROBERT H. LANYON, OF NEVADA, MISSOURI, AND IVILLIAM LANYON, OF PITTSBURG, KANSAS.

APPARATUS FOR ROASTING AND SMELTING.

SPECIFICATION forming part of Letters Patent No. 474,019, dated May 3, 1892.

Application filed October 28, 1891- Serial ITO/410,128. (No model.)

To (tZZ whom, it may concern:

Be it known that we, ROBERT H. LANYON, residing at Nevada, Vernon county, in the State of Missouri, and WILLIAM LANYON, residiu g at Pittsburg, in the county of Crawford and State of Kansas, have invented certain new and useful Improvements in Apparatus for Roasting and Smelting, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

Our invention relates to improvements in apparatus for roasting and smelting ores, especially zinc; and it consists in the novel arrangement and combination of parts, as will be more fully hereinafter described, and designated in the claims.

In the drawings, Figure I is a vertical transverse section taken on the line I I of Fig. III. Fig. II is a similar section taken on the line II II of Fig. III. Fig. III is a horizontal crosssection taken on the line III III of Fig. I. Fig. IV is a longitudinal vertical section taken on the line IV IVof Fig. III. Fig. V is a similar section taken on the line V V of Fig. III.

The purpose of our invention is to roast, smelt, and reduce metalssuch as Zinc, lead, copper, silver, &c.from their ores, from sulphides, oxides, and other ores,using suitable mixtures and fluxes.

The object of our invention is to utilize the waste heat and gases that has been used for smelting purposes for roasting the ores, and also devising a means by which the temperature of the roasting-ovens may be regulated as desired.

To this end our invention consists in the improvedv furnace for roasting, desulphurizing, and otherwise preparing the ores and fluxes and then smelting and extracting the metal or matte therefrom.

As has been heretofore stated, we desire to use our invention principally in extracting the zinc from zinc-yielding materials.

Among the zinc-yielding materials from which We desire to extract the zinc are the following: ores of zinc in which the metal exists in the form of an oxide uucombined with s1lica; ores in which zinc is present as an oxide, but wholly or in part combined with silica;

ores in which the metal zinc exists wholly or in part combined with sulphur.

IVe will give a further description of the utility and advantages of our invention in connection with a mechanical description thereof.

Referring to the drawings, and particularly to Fig. I, which is a vertical transverse sec tion of a combined roasting and smelting furnace, 1 indicates walls, piers, or pillars, on which, and in connection with a central wall or pillar 2, the series of roasting or desulphurizing ovens are superposed. Connecting the upper terminal portions of said piers or walls are arches 3, substantially of the construction as illustrated iuFig. I. It may be noted in this connection that the

pillars

1 and 2 and the arches 3 are constructed and put together in any suitable form for the purpose designed, and also that we do not Wish to limit ourselves to the construction illustrated. The arches 3 are provided in the region of their central portions with openings, as shown in dotted lines in Fig. I, for the purpose hereinafter described. I

Located between the piers or

pillars

1 and 2 and on each side of pillars 2 is a series of metallic cross-pieces 4, which are arranged at suitable distances apart throughout the entire length of the structure, for the purpose more fully hereinafter described. Mounted on the cross-pieces I and secured thereto in any suitable and mechanical manner are the trackrails 5. Located on the exterior side of the piers or walls 1 are smelting-furnace chambers 6, and located in said chambers are a series of retorts 7, which embody the ordinary construction and operation of zinc-reduction retorts, and requires no further minute description or elucidation. It may be noted in this connection that located below said retorts are furnaces 8, the same being provided with feeding-doors 9, all of which embody the ordinary construction of furnaces used for noted in this connection that the said arches 12 extend throughout the entire length of the structure and project over the smelting-chambers 6. Said arches 12 are supported substantially by the upright castings 10 and piers 1, and are constructed according to the principles of masonry.

It can be readily perceived from the previous description that the arches 12, located on one side of the structure, as well as the smelting-chambers and retorts located in the same, are the same, and an exact duplicate of the arch, smelting-chambers, and retorts located on the opposite side of the structure. In other words, we use two smelting-chambers-such as 6-similarly constructed and located on opposite sides of the piers or walls 1, as illustrated in Fig. I. By using two smelting-chambers we can accommodate a greater number of retorts, and consequently reduce a greater amount of zinc or other metal.

The arches 12 are provided with a series of heat-exit openings 13. (For illustration see Figs. 1, II, and III, wherein we show our furnace provided with six heat-exit openings, three of which are in communication with each of the smelting-furnaces; or, in other words, each smelting-furnace has three heatexit openings.) It will not be inopportune in this connection to reiterate one of the essential features of our inventionthat is, we desire to utilize the waste heat that has been employed for smelting purposes for roasting and desulphurizing purposes, and the object of having the smelting-furnaces 6 provided with heat-exit openings 13 is to effect a means for permitting the heat to pass from the smelting-furnaces 6 into the series of roasting or desulphurizing ovens, in a manner as will be more fully hereinafter described.

Having described the construction and location of the smelting-chambers, we will now proceed to describe the construction and location of the desulphurizing or roasting chambers relative to the smelting-chambers.

As has been heretofore stated briefly, the series of roasting or desulphurizing ovens or chambers are all located in horizontal planes above the smelting-chambers and are supported by the piers or

walls

1 and 2 and the arches 3. (For illustration we refer to Figs. I and II.)

15 indicates a series of roasting or desulphurizing chambers or ovens and are constructed of the usual material as used in zincdesulphurizing ovens or furnaces. In the drawings we have shown a series of four of such ovens located above each other. However, we can use any number that we desire.

Fig. I is a vertical transverse section of the roasting-ovens, and also Fig. II is a vertical section of the relief-fines, which communicate with the hot-air or heat-storage chambers, as will be more fully hereinafter described, and also a similar section of the central draft or desulphurizing flue, and a vertical section of the hot-air or heat-storage chambers.

Figs. IV and V are vertical longitudinal sections of the roasting-ovens. It may be noted in this connection that in the drawings we have shown two series of roasting-ovens located on opposite sides of a division-wall 16. Said series are of the same construction and are exact duplicates of each other.

17 17 indicate two hot-air or heat-storage chambers, which are located on opposite sides of the division-wall.16. Said hot-air chambers 17 are located in the central portion of the series of roasting-ovens and extend vertically and transversely across the same. Said hot-air chambers are in communication with the smeltingfurnace chambers 6 through

flues

18, 19, and 20. Said

lines

18, 19, and 20 are respectively located over the heat-exit openings 13 and converge together, as illus trated in Fig. III, and open up into the hotair or heat-storage chambers 17. In other words, said

flues

18, 19, and 20 convey all the heat that emerges from the sme1ting-cham bers 6 into the hot-air or heat-storage chambers 17 y) We have shown in the drawings the

hotair fines

18, 19, and 20 passing to the hot air chambers 17 in almost a horizontal direction; but said lines may incline upwardly, if desired, or occupy any direction so as to effect a direct communication between the smeltingchambers 6 and the hot-air chambers 17.

21 indicates the vertical walls of the hotair chambers 17 It may be noted in this connection that the division-walls 16 and the hot-air-chamber walls 21 divide the series of roasting-ovens 15 into four vertical series of roasting-ovens, and said series of roastingovens are located, respectively, in

compartments

22, 23, 24, and 25. (See Fig. III.) The compartments 22 and are located on opposite sides of one of the hot-air chambers 17, but on the same side of division-wall16. The

compartments

23 and 24 are located on opposite sides of the other hot-air chamber 17 and on the same side of division-wall 16 and opposite to the

compartments

23 and 25.

26 indicates the roasting-oven floors, which are secured to and project from the hot-

airchamber walls

21, and 27 indicates similar roasting-oven floors, which are secured to and project from the end walls 29 of the roasting or desulphurizing furnace.

It can be readily perceived by referring to Figs. IV and V that the roasting-

oven floors

26 and 27 are secured to and project from in an alternate manner the division-walls 21 of the hot-air chambers and the end walls 29 of the roasting-furnace, leaving spaces 30 at the free ends of said floors for the passage of heat around the same.

The series of roasting ovens or chambers 15 are in communication with the hot-air chambers 17 through openings 31 (see Fig. V) and the passage for heat indicated by arrows. The hot-air chambers 17 are provided withrelieffines 32, and said relief-fines are provided with hinge-valves 33, which are secured to said fines in any suitable and mechanical manner. Said valves 33 are provided with arms 34, to which operating-rods 35 are pivotally secured. The object of said flues 32 and the valves 33 secured to the same is to regulate thetemperatnre of the series of roasting-ovens, in a manner as Will be more fully hereinafter described. Said tines 32 are in direct communication with the hot-air chambers 17, respectively, as illustrated in Fig. II. It may be noted in this connection that all of the roasting ovens or chambers are in communication with each other through passages 30.

36 indicates a central draft-iine, which is located about the center of the series of roasting ovens or chambers. Said fine 36 is provided with four openings or small flues namely, a small fine 37, which isin communication with the vertical series of roastingovens, which are located in compartment 22, a similar small flue 38, which is in communication with a vertical series of roasting-ovens which occupy compartment 25, a similar fine 39, which is in communication with the ver' tical series of roasting-ovens which occupy compartment 23, and a small flue 40, which is in communication with a series of "roastingovens which occupy compartment 24. Said

small fines

37, 38, 39, and 40 answer as exits for the hot air that is passed around the vertical series of roasting-ovens, which respectively occupy and are located in

compartments

22, 25, 23, and 24. The hot air that is passed around said series of roasting ovens or chambers passes out through said fines through openings 41, (see Fig. 11,) wherein the passage of heat is indicated by arrows.

Having given a mechanical description of our invention, we will now give a brief de scription of the operation of the same and the course of heat which passes through the same. It may be noted in this connection that the frame-work of the roasting-fnrnacethat is, the furnace in which the roasting-ovens are 1ocatedmay be constructed in any suitable manner in accordance with the principles of mechanics and masonry, and, also, that the series of roasting-ovens may be constructed of any desired material and in any desired manner.

The material that is to be roasted or desulphnrized maybe fed into the series of roasting ovens or chambers through

openings

42 and 43, designed for that purpose, and saidseries of roasting-ovens may be also provided with working-holes of any desired character, which are not illustrated. After the material has been roasted it may be removed from the series of roasting ovens or chambers through the openings 42, and thence passes through the openings 43, formed in arches 3, (see Fig. 1,) and from the openings 43 the roasted material may fall into a car (which is not illustrated) which is adapted to run on the track-rails 5. From said car the roasted material maybe removed and placed into the reduction-retorts 7. However, the manner of feeding the material to be roasted, and also the manner of removing the roasted material and placing the same into the reduction-retorts, may be varied to suit the convenience of the operator. By the construction, as hereinbefore described, it can be readily perceived that there is plenty of room between piers or

Walls

1 and 2 for handling the roasted material. It also may be noted in this connection that the smelting operation is carried on according-to the usual and well-known manner.

We will now proceed to describe the method we have devised for utilizing the waste heat that has been employed for smelting purposes for roasting and desulphnrizing the ore, and in this connection we will also describe the course of the heat throughout the smelting and roasting furnace. The hot air that is collected in the smelting-chambers 6 after the same has been utilized for smelting purposes emerges from the said chambers through the hot-air exit-openings 13, formed in arches 12, which overlie the smelting-chambers, into the

tines

18, 19, and 20, as indicated by arrows in Figs. II and III, thence into the hot-air chambers 17. When valves 33 are closed, the hot air will be restrained in said chamber 17 until it passes around and through the series of roasting-ovens 15, as indicated by the lefthand portion of Fig. II and also in Fig. V. After said hot air has passed around and throughout said series of roasting-ovens it finally emerges and passes out of the central draft or desnlphurizing flue 36 through the openings or

small flues

37, 38, 39, and 40. If there has been too much heat received into the roasting-furnace around and throughout the series of roasting-ovens for roasting purposes, the operator should elevate either or both of valves 33 and permit the hot air to pass out through the fines 32 direct from either or both of the hot-air chambers 17, which will reduce or lower the temperature of the roasting ovens or furnace. If valves 33 are left open, the heat that is collected in the hot-air chambers 17 will pass directly out through the tines 32 without permeating or passing through the series of roasting-ovens. It can be readily perceived from this construction that the temperature of the roasting-furnace or the series of roasting-ovens may be regulated as desired, and also that the heat that. has been used for smelting may also be used for roasting purposes.

Having fully described our invention, what we claim is 1. The herein-described combined roasting and smelting furnace, having upright piers or

Walls

1 and 2, located apart from each other, arches 3, provided with holes 43,.snrmounting and connecting said piers, smelting-chambers 6,located on the outside of piers or walls 1, in which a suitable number of retorts may be placed, arches 12, provided with heat-exit openings overlyingsaid smelting-chambers, a roasting-furnace composed of a series of roastingovens located above said smelting-chambers and supported on said

pillars

1 and 2 and arches 3, flues communicating with said roasting-ovens and theheat-exit openings, and heating-furnaceslocated underthe smelti ng-chambers, substantially as set forth.

2. A combined roasting and smelling furnace having upright piers or walls 1 and :3, smelting-chambers located outside of said piers or walls 1, arches 12, provided with exitopenings overlying said smelting-chambers, a roasting-furnace or series of roasting-ovens located above said smelting-chambers and communicating with the exit-openings thereof, intermediate chambers 17, located within said roasting-furnace and in communication with said series of roasting-ovens, relief-fines 32, communicating directly with said chambers 17 and provided with valves, means for controlling said Valves, and heating-furnaces located under the smelting-chambers, substantially as set forth.

3. A combined roasting and smelting furnace having upright piers or

walls

1 and 2, located apart from each other, car-tracks 5,10- cated between and supported on cross-pieces 4, secured to said upright walls, arches 3, provided with holes 43, surmounting and connectin g said piers or walls, smelting-chambers 6, located on the outside of piers or walls 1, in which a suitable number of retorts may be placed, arches 12, provided with three heatexit openings overlying said smelting-chambers, a roasting-furnace or series of roastingovens located above said smelting-chambers and supported on the said

pillars

1 and 2 and arches 3, intermediate chambers 17, located within said roasting-furnace and in communication with said series of roasting-ovens, three converging hot-air fines or passages leading from the said heat-exit openings and smelting-chambers to and in communication with said hot-air chambers, relief-fines 32, provided with valves 33 in direct communication with said hot-air chambers, rods 35 for operating said valves, and heating-furnaces located under the smelting-chambers, substantially as set forth.

4:. A combined roasting and smelting furnace having upright piers or walls 1 and 2, located apart from each other, car-tracks 5,10- cated between and supported on cross-pieces 4, secured to said upright walls, arches 3, provided with holes 43, surmounting and connecting said piers or walls, smelting-chambers 6,located on the outside of piers or walls 1,in which a suitable number of retorts may be placed, arches 12, provided with three heatexit openings overlying said smelting-cham bers, a roasting-furnace or series of roastingovens located above said smelting-chambers and supported on the said pillars or walls 1 and 2 and arches 3, intermediate chambers 17, located within said roasting-furnace and in communication with said series of roastingovens, three converging hot-air fines or passages leading from the said heat-exit openings and smelting-chain hers to and in communication with said chambers 17, rods 35 for operating said valves, a central flue 36, having openings or flues 37, 38, 39, and 40, said flues being in communication with the series of roasting-ovens, through which the heat passes out after passing around and throughout said series of roasting-ovens, and heating-furnaces located below the smelting-chambers, substanv tially-as set forth.

5. In a combined roasting and smelting furnace, a series of roasting ovens or chambers, two vertical transverse chambers located in the central portion thereof and in communication therewith, relief-fiues in communication with said transverse chambers, valves secured to said relief-fines and means for oper ating the same, a central draft-flue having four dues or passages formed therein, the same being in communication with the series of roasting-ovens, and means for heating the latter, substantially as set forth.

6. In a combined roasting and smelting furnace, a series of roasting ovens or chambers arranged above the smelting-chambers, vertical transverse chambers located in and in communication with said series of roastingovens, the floors of alternate roasting-ovens being secured to and projecting from the walls of said transverse chamber and the end walls of the roasting furnace or ovens, respectively, but leaving passages at the free ends thereof for the passage of heat, relief-fines in communication with said transverse chambers and means for regulating the passage of heat therethrough, a central draft-flue provided with four passages, the same being in communication with the series of roasting ovens or furnaces, and means for heating the latter, substantially as set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

ROBT. H. LANYON. WILLIAM LANYON.

Witnesses to the signature of Robert H. Lanyon:

GEORGE BENNETT, E. J. BRAY. Witnesses to the signature of William Lanyon:

BENJ. J. KLENE, J NO. 0. HIGDON.