US994550A - Method of charging blast-furnaces. - Google Patents

Description

H. D. WILLIAMS, W. AHLEN & V. ROSS. METHOD OF CHARGING BLAST FURNACES. APPLIOATION FILED 1130111909.

Patented June 6, 1911.

2 BHEETS'SHEET 1.

.WITN T SSES INVENTORS H. D. WELLIAMQS, W. .AHLEN 6; V. ROSS. METHOD or CHARGING BLAST FURNACES To all whom "it may concern:

UNITED STATESPATENTOFFICE.

HOMER n. WILLIAMS, WILLIAM AH'Ii-EN, AND moron. ROSS, or DUQUESNE, PENNSYL- v VANIA.

M H D or CHARGING mas -F A Speoiiigmtion of Letters ratent;

Application filed December", 1909. Serial No. 533,637.

Be it known that we, HOMER D. WILLIAMS,

VILLIAM AHLEN, and VICTOR Ross, all of Duquesne, Allegheny county, Pennsylvania,

have invented a new and useful Method of Charging Blast-Furnaces, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which I Figure 1 is a sectional end .elevation of a stock bin having a distributing discharge chute .or gate, adapted for use 1n carrying out the improved method forming this invention. Fig. 2 is a partial side elevation of a stock bin showing a modified form of distributing discharge chutelor gate mounted thereon. Fig. 3 1s a sectional end elevation on the line III-J11 of Fig. 2, showing the chute or gate of Fig. 2 as applied for use on a stockbin.

.Our invention relates to a novel and effective method of uniformly distributing the coarse and-fine materials forming the successive charges of burden formingmaterials preparatory to being hoisted to the top of a-blast furnace in which'the separate charges are finally deposited.

V In the handling of ,materials of various sizes forming the burden of blast furnaces, such as ore, limestone, coke and other materials, while transferring the materials from the stock bins or storage vpockets into other receptacles in charging the lnateria'ls into blast furnaces, the coarser portions are deposited to one side and the finer portions "such materials.

' We have discoveredthat by providing a of such materials to the opposite side, of the blast furnace,-is well known, and various methods and apparatus have been {devised} the.unequaldistribution of, d

' I tically movable ate 17 by which the throat or chute Misc osed. The

for overcoming discharge chute or gate of improved con- ..-struction,-on the discharge outlet ofthe bins I or pockets in which the materials forming the burden of the furnace are. stored, that 'the coarser and, finer parts :of the .material canbe uniformly distributed in the charg- 'ing bucket orfotherreceptacle in which they are conveyed to thef'top of the blast furnace.

An ideal receptacle for conveying the burden forming materials to the top of a blast furnace after having been distributed ,in accordance with our invention 'issde- Patented, Jones; 1911.

scribed and shown in the Rothoff and Neel-n.

land Patent, No. 579,011, for ablast furnace hoisting and charging pparatus, dated March 16,1897. i.

In F igql of the drawings, 2 represents the bottom portion of a storage bin or receptacle, in which iron ore or other materials are deposited and stored. Surrounding the discharge opening 3 in the bottom of this bin is a cylindrical throat or discharge'spout 4 having a conical bell 5 suspended by straps or hangersfi from the bottom of the bin 2. A cylindrical vertically movable throat section 7 surrounds the section 4 of the throat and is connected to one endof the operating lever. 8, which is pivotally connected to a bracket 9 secured on the bin 2, and by means of which the chute is operated in opening and closing, Beneathtthe throat formed by the sections 4 and {Land also secured to the straps or-han ers 6 a conical deflector 10 which is emp oyed for a purpose described hereinafter. Beneath the chute .or dischargeoutlet opening on the bin 2 is a'removable charging bucket 11, which is shown mounted upon a truck or car 12, arranged to run, upon' the track formed by the rails 13 in conveying the bucket 11 to and from the int at the base of the furnace from which it is removed fromthe car and hoisted to the topof the blast furnace, preferably with apparatus like that shown in the above referred'to -Rothoif and Necland- Patent-No.

gate 17 is connected by the link 18 with one end of the. hand-operatin ,lever 19 by which the gates are opened an closed. The chutes orspouts A or 14 are located at suitable intervals in the length of the storage or stock bins 2, and in this way successive charges of various materials located atvditl'erent' arts of the.

stock bins can be uniformly distributed in bins 2 in the usual manner. The buckets 11'on the cars 12 are brought into position beneath the gates, and, by' means of the hand levers 8 or 19 the gate is opened to allow the ore or other material to flow from the bin through the open "gate or spout 4 or 14. With the apparatus shown in Fig. 1, both the coarse and, fine materials issuing from the spout 4:,wil1be deflected outwardly by the conical bell 5, and by striking the sides of the conical deflector 10 its course will be diverted so as to discharge inwardly into the bucket'll toward the "erticalaxis of the charging bucket. Both the coarse and the fine materials will be caused toflow toward the vertical axis of" the bucket 11 at, all points around the circumference of the throat or spout and in this Way the ooarseand fine materials will" be uniformly distributed in the bucket 11. The charging buckets 11 are then conveyed on the tracks formed by the rails 13to the base of the furnace, from which point they maybe handled and-discharged from the buckets 11 into the mouth of the .furnace in a manner similar to that described in the Rothofi and Neeland Patent No. 579,011, or in any preferred manner.

In the construction shown in Fig. 1 considerable height or head room-is necessary,

in order to installthis apparatus, and the necessary height in some localities may not be available. In such cases the apparatus shown in Fig. 3may be used, andthe conical'shield and gate being installed within the bin, the necessary head ,room can be materially lessened.

I The apparatus shown by Figs. 1 and 2- is operated in the same manner as that described for throat 17 of Figs. 2 and 3 engaging with the flaring upper margin of the hopper 14; in closing the gate of the bin.

The advantages of our invention will be apparent to those skilled intheart.

By uniformly distributing the materials discharged from the'bins in. the charging buckets, the necessity of using auxiliary ap- Fig l and the result attainedis. the same, the annular Vertically movable paratus for efi'ecting the distribution is overcome.

We claim 1. The method of charging blast furnaces consisting in placing the burden forming materials in stock bins, loading successive charges of the materials into carriers, uniformly distributing the materials depositing the charges from the bins into the carriers, and depositing the dis tributed cha/rgesin the blast furnace; substantially as described.

2. The method of harging blast furnaces consisting in placing the burden forming. materials in stock bins, loading successive charges of the materials into carriers, uniformly distributing the coarse and fine materials in depositing the charges from thelbins into the carriers and depositing the distributed charges in the blast furnace', substantially as described. 7

3. The method of harging blast furnaces consisting'in placing the ore in stock bins, loading successive-charges'of theore into carriers, uniformly distributing the coarse-and fine portions of the ore in depositing the charges from the-bins into the carriers and depositing the distributed charges in the bl st furnace; substantially as described.

4. The method of charging blast turnaces consisting in placing the burden forming materials in-stock bins, loading successive-charges of the materials into carriers, uniformly distributing the materials in depositing the charges from the bins into the carriers, conveying the distributed charges to the furnace top and depositing the ma terials in the blast furnace; substantially as described.

In testimony whereofqwe have set our hands.

"HOMER D. WILLIAMS. ,WILLIAM A-HLEN.

VICTOR oss.

hereunto lVitnesses GEORGE L. NEFF, I. E. MCDOWELL.

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