US810864A

US810864A - Apparatus for chilling cinder or slag.

Info

Publication number: US810864A
Application number: US17140803A
Authority: US
Inventors: Frank K Hoover; Arthur J Mason
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-08-31
Filing date: 1903-08-31
Publication date: 1906-01-23
Anticipated expiration: 1923-01-23

Description

No. 810,864. PATENTED JAN. 23, 1906. F. K. HOOVER a; A. J. MASON. APPARATUS FOR OHILLING GINDER OR SLAG.

APPLICATION FILED AUG.31, 1903.

'4 SHEETSSHEET l.

No. 810,864. PATENTED JAN. 23, 1906. F. K. HOOVER & A. J..-MASON. APPARATUS'FOR GHILLING GINDER OR SLAG.

APPLICATION FILED AUG. 31, 1903.

' 4 SHEETSSHEET 2. h

No. 810,864. PATENTED JAN. 23, 1906. P. K. HOOVER & A. J. KMASON. APPARATUS FOR CHILLING- BINDER OB. SLAG APPLICATION FILED AUG.31, 1903.

4 SHEETS-SHEET 3.

No. 810,864. PATENTED JAN. 23, 1906.

F. K. HOOVER u 3.. J. MASON.

APPARATUS FOR OHILLING- OINDEB, OR SLAG. APPLICATION FILEI'AL,(.31,19O3.

SHEETS-SHEET 4.

UNITED srarns I PATENT area.

FRANK .K. HOOVER AND ARTHUR J. MASON, OFGHICAGO, ILLINOIS. v

APPARATUS Fen CHILLING cmesa on sLae.

Specification of Letters Patent.

Patented J an. 23, 1906.

Application filecl Angust 31, 1903. Serial No. 171,408.

To In whom, it inn ,1 concern:

Be it known that we, FRANK K. HOOVER and ARTHUR J. MAsoN, citizens of the United States, and residents of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in A paratusfor Chilling ()inder or Slag for Use in (loiniection with Blast- Furnaces, of which the following is a specification.

()ur invention relates toa device for chilling the cinder or slag discharged as waste from iron-furnaces and for rendering the same suitable for various subsequent uses, such as for railroad-ballast.

The cinder or slag discharged from ironfurnaces and disposed of under the method at present in vogue requires a long time for cooling, and in the case of the method of coolmg by the direct application of streams of cold waterthereagainst' the cinder or slag is given a peculiar spongy character, which produces such a ratio between its volume and specific gravity as destroys its usefulness for the purpose of railroad and other ballast, and hence under present n'iethods this cinder or slag becomes worse than waste material by reason of the large amount of space of more or less valuable land required for its final disposition.

Our present invention contemplates an 11nprovement'in the means for treating and disposing of this by-product of blast-furnaces which not only obviates the objections last referred to with reference to the transporta tion and final disposition of the material, but also produces therefrom a material excellently adapted for use as ballast by reason of its increased density and specific gravity.

Briefly described, the mechanism constituting our improvement consists of an impervious endless conveyor, preferably in the form of a flexible steel belt maintained in continuous .motion and supported on the under side of its upper section by a body of cooling-water led into a series of pans forming a continuous stream of transversely-moving water; upon which this upper section of the belt floats, and the cinder or slag is let through the runner in the ordinary manner and delivered on to the top surface of this upper section of the belt in much the manner that'battcr is poured upon a griddle to make batter-cakes. The plate being exceedingly thln, the cinder at once chills and forms a dense glassy substance varying in thicknessfrom one-quarter to one-half of an inch, while tus.

the carrying-section of the belt is made of such length that the cinder will be sufficiently chilled during its travel thereon from the receiving to the dischargin end, from which latter it may be discharge directly into railway-cars, whence it may be'transported to any desired locality.

In order to enable the invention to be more clearly understood, we have illustrated such an ap aratus in the accompanying drawings.

Re erring to the drawings, Figure 1 is a side elevation of the complete mechanism,

showing at the discharging end thereof a railway-car adapted to receive the discharge from the belt. Fig. 2 is a top plan view of the mechanism shown in Fig. 1. Fig. 3 is a side elevational view, on an enlarged scale, of the inner or receiving end of the belt and its driving, supporting, and other cooperating devices, parts being drawn in section; and Fi 4 is a cross-sectional view, sti1l further enlarged, on the line 44 of Fig. Fig. 5 shows connection of cooling apparatus with furnace.

In the drawings,-5 indicates the lower or discharging end of the usual trough or runner through which the liquid slag is allowed to run off from the discharge-ports of the furnace. Directly'beneath the overhanging end of this runner is rotatably mounted on suitable standards 6 a large broad pulley 7, carrying the. inner end of an endless thin sheetmetal belt 8, the opposite end of which is carried by a similar pulley 9, similarly supported at the outer or discharging end of the appara- Directly beneath the upper section of this endless belt is disposed a trough, herein shown as consistin of a series of shallow pans 10, supported at t ieir outer edges upon the upper ends of a corresponding series of downwardly-divergent tubes or pipes 11, the lower ends of which latter are tapped into a pair of sewer-pipes 12, Fig. 4, disposed longitudinally of the belt and referably embedded in the groundwork or 'oundation 13 of the apparatus. The pans 10 are deepest at their central points and at such points are respectively tapped by short valve-controlled pipes 14," leading upwardly from a large longitudinally-eritending water-inlet pipe or main 15, the inner end of which communicates freely [with the discharge of the cooling-water of the margins of the porting-tubes 1 1 is such as to provide a direct overflow from said -lateral margins of the pans into the .up er open ends of said tubes, 5 as most clearly i lustrated in Fig. 4.

Beneath the lower section of the belt are rotatably mounted at suitably-spaced intervals a series of supporting-rolls '16. These rolls may be supported and journaled byany to suitable means, but preferably and conven-J iently are carried by brackets 17, mounted on the tubular supports 11 at suitable points on the latter to sustain the rollers at the pro er height to support the belt.

he belt may be driven by any suitable or convenient mechanism, the present illustration showing for this purpose an electric motor, (indicated at 18,) the armature-shaft of 'which carries a pinion 19, which through an intermediate speed-reducing gear 20 and inion 21 drives a ear 22, fast on one face 0 the pulley 7. At t e opposite end of the appara tus and transversely thereof is a rallroad track 23, so located with reference to the pul- 25 ley 9 as to permit a railroad-car 24 to be brought into a position favorable to directly receiving the cooled cinder or slag discharged from the belt, all as plainly indicated in Figs. 1 and 2.

The operation is as follows The metal belt being driven inthe direction indicated by the arrows in Figs. 1 and 3 and the outer end of the main 15 being closed, the cooling-water from the furnace flows under hydrostatic pressure into the main 15, risin therefrom through the pipes 14, filling and ooding the pans, which may overflow into each other, overflowing the margins of theans intothe tubular supports 11 and being ischarged by the latter into the sewers 12. By reason of the described relative arrangement of the pans ,their means of overflow,'and the superposed upper section of the belt the latter virtually floats on the surface of the Water in the pans, being in constant and complete contact with said Water, which, it should be observed, constitutes a continuous stream flowing in a direction transversely of the belt. The belt and water-flow having thus been started up, the slag -discharge ort of the furnace. is

opened, and the mo ten slag runs in a contmuous stream down the runner 5, pouring and distributing itself in a thin continuous layer upon the upper surface of the floating 5 5 section of the belt very muchin the manner in which batter is poured upon a griddle. The cooling effect 0 the water is instantly *transmitted through the thin belt to the thin body of slag, and so great is this cooling effect by reason of the large volume of cooling-water passedin contact with the belt and the large radiating-surface of the slag that by the time a given quantity of slag has traveled from the dischargin end ofthe runner to the o 5 discharging-end of t e belt it has chilled sufpans to their respective sup-.

1. In an apparatus for chilling blast-furcated ficiently' to permit it to be safely received b I the car 24. During its travel upon thebe t and by reason of the rapid cooling or chi ling to Wlllch it is subjected the sheetof slag automatically breaks and splinters into compara- 7io tiv'ely small fragments or cubes of sizes well adapted for its use as ballast, While the chill'. ingefl'ect at the lsametime reduces the slag to the form of a dense glassy substance having a comparatively high specific gravity and y virtue of this characteristic also being Wel ada ted for use as ballast. e novel method of chilling s1 or cinder hereinabove disclosed, and whic be; I carried out by means of the apparatus herein described and claimed, is not claimed-in the present. a plication, but is made the subjectmatter 0 a companion a plication,filjaiirion currently herew1th,-Seria No. 176,409 jq; We claim nace slag, the combination'with-an'impervi ous endless belt on which the slag isfiadapted to be oured and carried away, .of means 10- beneath the upper carrying-section of 9c the belt adapted to support a runni body of cooling water contacting under ydro-i static ressure with the under surface of said upper eltsection,substantiall asdescribed.

v2. In an apparatus forchil blast-fur- 5 nace slag, the' combination withan'impervious endless belt on which the slag is adapted to be poured and carried awa of a seriesof pans located directly beneath the upper carrying-section of the belt, andvmeans or'con- IOO tinuously flooding said pans with a stream of cooling-water on which said carrying-section of thebelt floats, substantiall as described.

3. In an apparatus for c lingblast-furnace slag, the combination with an impervi ous endless belt on which the slag is adaptedto be poured and carried away, of a trough consistin of a series of shallow pans located directly eneath the upper carryingesection of the belt, a water-inlet pipe havlng branches 1 1o tapping the bottoms of sald pans, and Wateroverflow pipes freely: communicating with the 'o posite side margins ofsaid pans, sub: stantially as described.

4. In an apparatus for chilling blast-fur If nace slag, the combination with an impervious thin endless metal conveyer belt on which the slag is adapted to be oured, of a trough consisting of a series of s allow pans coextensive with the width of the. belt andgrzo lying directly beneath the upper carryingsection thereof, a water-inlet pipe disposed beneath said series of pans and having branches tapping the res 'ective bottoms thereof, and water over ow pipes freely. I25 communicating with the opposite side margins of the pans and supporting the latter, substantially as described.

- 5. In an apparatus for chilling blast-furnace slag,

the combination with an impervi- I30 I ous thin endless metal conveyer-belt having .its receiving end located beneath a furnacerunner to receive the slag, of a trough consisting of a continuous series of shallow pans coextensive with the width of the belt and lying directly beneath the upper carryingsection thereof, a water-inlet pipe disposed beneath and longitudinally of said series of pans and having branches tapping the respective bottoms thereof, and water-overflow pipes freely communicating with the opposite side margins of the pans at aheight which eflectsaflooding'of the pans and the floating of the belt on the water passed therethrough, substantially as described.

6. In an apparatus for chilling blast-furnace slag, the combination with an impervious endless conveyer-belt and means for supporting and driving the same, of means for pouring melted slag in a thin sheet onto the receiving end of said belt,means forreceiving the discharge from the opposite end of said belt, and means located beneath the upper carrying-section of the belt adapted to spread a running body of cooling-water into supporting contact with substantially the entire under surface of said upper belt-section, substantially as described.

7. In an apparatus for chilling blast-furnace slag, the combination with an impervious endless thin conveyer-belt and a air of large pulleys or drums supporting an driving the same at its opposite ends; of means for pouring li uid slag onto the upper surface of said be t, a trough consisting of a se:v ries of shallow pans located directly beneath] the upper section of said belt, means for flooding said pans by a continuously-flowing stream of cooling-water which contacts and floats said upper section of the belt, overflowpipes communicating with the side margins,

pervious trave ing metal conveyer adapted to receive and transport the slag, a water-receptacle arranged in juxtaposition to the conveyer and through which the coolingwater may be circulated in contact with the conveyer, and means for conveying the Water from the cooling-water apparatus of the furnace to said receptacle, as and for the pur-- pose set forth.

' FRANK K. HOOVER ARTHUR J. MASON.

Witnesses: I

E. K. Soorr,

C. B. NICGOLLS.