US1656115A - Apparatus for sintering fine ores or pulverulent ores - Google Patents

Description

Jan. 10, 1928. 1,656,115

A. HOLMBERG APPARATUS FOR SINTERING FINE OHES 0R PULVERULENT ORES Original Filed June 21. 1923 4 Sheets-Sheet l Jan. 10, 1928. 1,656,115

A. HOLMBERG APPARATUS FOR SINTERING FINE ORES 0R PULVERULENT ORES Original Filed June 21, 1923 4 Sheets-Sheet 2 Jan. 10, 1928. 1,656,115

A. HOLMBERG APPARATUS FOR SINTERING FINE ORES OR PULVERULENT DRES Original Filed June 21. 1923 4 Sheets-Sheet 5 1 K55 I06 107 I05 1% 4 PO /o5 /O6 107 /o5 /o9 //o (/2 //J Jan. 10, 1928. 1,656,115

A. HOLMBERG APPARATUS FOR SINTERING FINE ORES OR PULVERULENT ORES Original Filed June 21. 192 4 Sheets-Sheet 4 Patented Jan. 10. 192a.

UNITED STATE ANDERS HOLMIBERG, OF STOCKHOLM, SWE

:oniv, assrenon 'I'O Hanan ensrnr ronunr.

or srooxnomn, s'wnnnn'.

APPARATUS FOR SINTERINGl FINE OREfi OE PULVERULEN'JI DREd.

- Original application filed June2l, 1923, Serial No. 646,88'3", and in Sweden July 3, 1922. Divided and thinapplication filed January This invention relates to an improved plant for sintering fine ores or pulverulent ores.

The object of the invention is to provide a 5 sintering system or plant of the said kind which enables a practically continuous sin tering of such ores at low cost and in such way as to secure the most hyg enlc conditions possible as regards the operators.

id The invention consists, chiefly, in a sintering system, comprising a plurality of independent portable sintering vessels, exhausting apparatus, a plurality ofwork positions, suction pipes extending from said exhaust- 15 ing apparatus to all of the work positlons .and each adapted to be kept connected with one sintering vessel during the sintering of the material contained therein, a track extending alon the work positions to a dis- 20 charge place o! the sintered material, transporting means on said track adapted to transport the vessels .with the slntered material from either of the work positions to the discharge place, and'a charging apparatus at at said track at a distancefrom the work positions.

Due to the fact that the charge filling and emptying operations take place'at distant points from the sintering positions the latter as will be free from injurious dust and smoke.

With the method according to this invention as compared with hitherto known methods a larger output, lower working expenses and a better sintering product will result as from the fact that the charg: filling and sintering operations ma be tter supervised when taking place at itierent places without exposing the o rators to injurious smoke and heat and t at the sintering vessels rest an stationary during the sintering operation proper.

In the accompanying drawin s several ex amples of plants according to t is invention are shown. Fig. 1 is a diagrammatic plan at view of a plant according to one embodiment of the invention. Fig. 2 is a diagrammatic elevation of said lant. Fi 3 is an elevation of the charge Hing device of said plant. Fig. 4 is an elevation of a tiltable sintering no vessel and Fig. 5 is a vertical section of said vessel taken at right angles to the elevation shown in Fig. d.

Fig. 6 is a diagrammatic elevatiom-with partin section, of a second form of plant 14, 1921?. Serial No. ieiaaa.

according to the invention. Fig. 7 is a cross sectionand Fig. 8 is a' plan view of said second plant.

Fig. 9 is a diagrammatic elevation of a third plant. Fig. 10 is a cross section and F g. 11 is a plan-view of said third plant.

he plant shown in Figs. 1-5 comprises a charge filling house 1, an exhausting house 2, a work platform 3 at one side thereof, an emptying place 4t and a cable way 5 extending from the emptying place, through the charge filling, and from thence in two par allel branches over the platform 3 and baclr to the emptying place. At the emptying place a connection (not shown) is provided between the ends of the cable way so that the latter forms, in fact, a closed circuit. The cable way is adapted to carry sintering vessels from the emptying place 4 to the charge filling house and, after the charge filling operation has been completed, to a worlr position on the platform 3 where the sintering operation takes place, and after the com pletion of said sintering operation baclr again to the emptying place, as will be here inafter more in ly set forth.

The sintering vessels (Figs. d, 5) comprise tiltable open-topped receptacles 6 having supporting arms by means of which the vessels may be suspended on and moved along the cable way 5. Each sintering vessel is provided with a grate 8 (Fig. 5) to support the charge. The said grate rests on an annular bracket 9 which may be adjusted vertically by any suitable means (not shown). Mounted below the grate d is a suction pipe 10 having a downwardly directed month; In the bottom of the slntering vessels shutters .12 may be provided to facilitate cleaning oi the vessel.

The charge filling house 1, Fig. l, en closes any appropriate type of mingling apparatus to c set an intimate mixing oi the fine ore or pulverulcnt ore with a audicient quantity. ofpowdered fuel. in Figs. 2; and 3 the outlines of the mingler are indic'ated at 13. The mingler is provided at its lower end with two storage pockets 14, Fig". 3, situated at opposite sides of the cable-way 5 so as to permit the vessels to remain suspended on the cable during the charge filling operation. The charge lin o oration is carried out by swinging out tie ottoms l6, 16 closing the lower ends at the pockets till [ill

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around their. pivots 15, 15, thereby permitting the material contained in the pockets to drop into the sintering vessel and fill same. The bottoms are then swung inwards so as to again close the ends of the pockets, at the same time levelling the surface of the charge in the vessel filled. The mingler 13 is filled by means of any suitable conveying device. 13' Fig. 2.

The sintering vessel, having been filled, is removed from the charge filling house and carried up to a work position on the plat form 3. In the drawing, Fig.1, two parallel rows of work positions 17 18, 1.9, 20 and. 21, 22, 23, 24, respectively, are shown. The exhausting house encloses an exhauster' 26 driven by an electric-motor 25. The suction pipe 27 of the exhauster is connected with two suction chambers 28, 29 each of which is situated below one of the rows of work. positions; Extendin from said suction chamy the cable way and carried up to thev emptyin place. The .vessel having been emptied is moved to the charge filling house, where it is again filled and is then placed on position,21. Thenext vessel in'which the sintering operation is completed is that on 18 and when the sintering inthis vessel is completed the vessel is movedin the same 11.1% as that described above in connection wi the vessel from 17. After the vessel from 18 has been emptied and charged it will be placedon the position 22. This procedare will be repeated till all the ositions 21, 22, 23, 24 have been occupied. he positions 17, 18, 19, 20 are now idle. When the char of the vesselon 21 has been com- .plete y sintered, said vessel is emptied at 4,

again filled at 1 and placed on the position 17 and so on.

theway described a ractically con tmuous operation may be 0 tained. Moreover, the sintering places will be completely free from the dust inherent to the emptying- .of the vessels.

, In the plant shown in Figs. .6-8 101 is the charge filling place, 102 is the exhausting house, 103 is the work latform and 104 is the emptying place. A1 of the sintering or work positions are-arranged in a sin le row divided in two groups 105,109 and 11o 114, respectively. Each grou has a common suction chamber 115 an 116, respectively, in communicationwith the suction side of the exhausters 117, 118 within the exhausting house 102. Provided along the row of sintering positions are rails 119 to carry a movable igniter 120, which may be moved over the row of positions 105-114 and the sintering vessels thereon.

Provided along with the row work positions is a rail-way 121 further extending to the emptying place 104. The work positions and the corresponding ortion of the railway 121 are enclosed within a house 122 also enclosin a travelling crane 125 serving to lift t e sintering vessels. Mounted above the railway 121 outside the house 122 ,is the charge filling device'101. The charge filling device is not shown in detail, as it may be of the type'described above. The feeding of the device 101 may be effected by abelt conveyer 123 or the like.

The operation is as follows:

As soon as the charge in any-of the vessels is sufiiciently sintered, this vessel is removed from its position by means of the travelling" crane 125 and placed on a wa on 124 on the railway 121 by means of which the vessel is carried up to the emptying place 104, where it is emptied. The w the emptied vessel is moved bac on the railway 121 and is stopped below the charge filling device 101. e vessel is now filled with a fresh charge and the wagon with the filled vessel is thereupon moved to a position in register with -therespective work position. The vessel .is then removed from the wagon and placed on-its position by means of the crane 125. The igniter is moved up in register with the said vessel and caused to ignite the, charge therein. The same procedure is repeated as regards the remaining vessels accordin as the sintering, of their contents is com eted. The number ofwork positions is suc as to permit a substantially continuous operation, that is, the sintering of the charge of a subsequent vessel will be ended when the receding vessel has been charged and the cliarge therein ignited.

Figs. 9-11 show a small lant based on the same principle that un erlies the plant shown 1n Figs.

A number or work or sintering places 205-210 are provided above a common suction chamber 215 communicating with the suction sideof the exhauster 217 within the exhausting house 202. Extending alon the work positions at a higher level is a mi way 219 on which the i iter 220 may move over the vessels situate on said positions, and provided in the extension of the row of work positions is. a railway 221 supporting a wag on 224 large enou h to enable two sintering vessels to stand t 'ereon at the same time. The work places and a portion of the railway 221 are enclosed within the house 222. This house also enclosed an elevated rail 223 with a travelling crane 225. The rail 223 extendsto the emptying place 204. Mounted on 124 with above the railway 221 immediately outside the house 222 is the charge filling device 201.. The design 0t said device may substantially correspond to that described in connection with the first embodiment. The material is supplied to the charge filling device from a mingler 200. Provided .at the emptying place is a chute 230 having a sieve (not shown) to cause dusty and like particles to drop through the hopper 281 down into a wagon 232 on the railway 233 while allowing the sintered material to slide down into a wagon 234 on another railway 235.

The operation is as follows:

Let it be assumed that a filled vessel is standing on the wagon 224. When the charge in any oil the vessels on the work positions 205 210 has been completely sintered, this vessel is lifted from its work position by means of the crane 225 and carried up to the emptying place 204; where it is emptied, The vessel having been emptied, is carried up by the crane 225 to the wagon 22d and placed thereon, whereupon .the

charged vessel already standing on the wagon is lifted and placed on the position of the vessel just em tied. The vessel on the wagon an is carried up below the charge filling device 201 and again filled with material to be sintered. The wagon with the charged vessel is then moved loack again to the position shown in Fig. 11. As soon as sintering is completed in a further vessel, this vessel is subjected to the operation described.

Whatll claim is l. A sintering system, comprising a plurality of independent portalile sintering vessels, exhausting apparatus, a plurality of worlr positions, suction pipes extending from said exhausting apparatus to either of the worlr positions and each adapted'to he lrept connected with one sintering vessel during the sintering of the material contained there in, a track extending along the worlr positions to a distant discharge place for the sintered material, transporting means on said track adapted to transport the vessels with the sintered material from either of the work positions to the discharge place, and a charg ing apparatus at said track at a distance from the work positions.

2. A sintering system, comprising a plurality of independent portable sintering vessels, exhausting apparatus, a plurality of work positions, suction pipes extending from said exhausting apparatus to any of the work positions and each adapted to be kept connected with one sintering vessel during the sintering of the material contained therein, an igniting device movable along the worlr positions to either of said worlr positions, a track extending along the work positions to a distant discharge place for the sintered material, transporting means on said track adapted to transport the vessels with the sintered material from each of the worlr positions to the discharge place, and a charging apparatus at said truclr at a distance from the work positions,

In testimony whereof I have signed my name.

ANDERS HOLMBERG.

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