SU1154333A2 - Construction of bin on blast furnace trestle - Google Patents

Abstract

1. DEVICE OF BUNKERS AT DOSN KADO OSTADUES on avt.s. No. 960267, I distinguish y. With the aim of reducing the content of agglomere in the raw material loaded into the furnace, the double hopper necks installed above the sinter conveyors are equipped with vibro on one side, additive feeders located above the metering weights installed perpendicular to the axis of the conveyor and the other axis is mirror-vibrating screen feeders, with the screen sock inserted and the charge profile forming funnel on the conveyor, and its body is suspended from the throat at height-adjustable shock absorbers and connected to the drive through an eccentre flywheel. 2. The device according to claim 1, about t l and that the drives l; sinter conveyors for unloading vO of its sifting are installed above the bunker (L si of agglomeration, located symmetrically with the axis of the inclined maten skip hoist. TpoffCffOflfrrefl

Description

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with H: uiOpci4; niie ectroic to metal purg-mn, and in particular to the equipment of the Koprinfi estkkad for supplying charge materials and blast furnace skips. 11 (1 main bus. No. 960267 knows the device of the bunkers at the blast furnace stove, containing central towers installed on the overpass) and their cleaners, screens, feeders, weighing funnels, conveyors of sinter, coke and additives and a sloping bridge skip. podtnemnik, perpendicularly to the axis of which the conveyors of the sinter are located, coke and addition, and the weight funnels of the sinter are equipped with central bunkers with beats with military unloading necks Biased towards the inclined bridge, located along its axis adjacent to bunkers of coke and connected to the first one by succession with the help of screening feeders and intermediate points, the gf of the one throat of the bucket is aligned with the axis of the unloading throat of the weighing funnel of sinter 1. However, the range 1 needs in the production of pig iron and the intensification of the production process require 100% elimination of the fines from the 0.0 to 5.0 mm sinter sinter into the blast furnace. To do this, it is necessary to extend the sifting screen of the agglomere and place the feeders agglomerate and the lines above the conveyors of the agglomerate on the left and right of the bridge of the skip lift without expanding the cross-section of the sub-bunker room, since the expansion of the transverse dimensions of the trestle requires considerable capital expenditures and stops and other domain furnaces in the shop due to the fact that the furnace overpass being reconstructed is in the middle of the shop (railway tracks on the overpass in the shop, for example, dead-end). The aim of the invention is to reduce the content of agglomerate in the feedstock loaded into the furnace. This goal is achieved by the fact that, in the device of bunkers on the blast furnace ramp, doubled bins of the bunkers installed above the conveyors of the sinter are equipped with vibratory feeders on one side located above the metering scales of the horse axle and on the other side vibrating screens of feeders, with the sock of the vibrating screen inserted into the funnel forming the charge profile on the conveyor, and its body is suspended from the throat at height-adjustable shock absorbers and connected to the drive through the eccentre chnsh flywheel. . In addition, the drives of the agglomerate conveyors for unloading its dropout are installed above the agglomeration accumulation bunkers located symmetrically with the axis of the inclined bridge of the skip hoist. . FIG. 1 shows the bunkers of the blast furnace trestle, plan view (placement of bunkers for collecting agglomere and discharging it into railway cars); in fig. 2 - supporting reinforced concrete structure of the overpass, cross-section, (bunker with double neck and their placement); in fig. 3 - placement of screening unit for sinter, connection of the nose and body through adjustable shock absorbers with funnels, its throat and vibration drive; in fig. 4 - And in FIG. 3 (connection of the body of the sinter vibrating screen through a rotating eccentric flywheel with a drive); in fig. 5 is a section BB in FIG. 4, in FIG. 6 - arrangement of the drive of the sintering conveyor above the hopper, with side bins in section. The device contains central bins 1 for the charge, runners 2, dispensers 3, weighing funnels 4, conveyors 5 of sinter, coke and additives, and a slope bridge 6 of the skip hoist, perpendicular to the axis of which are located the conveyors of sinter, coke and additives The weighing hoppers 4 are provided with central bunkers 7 with double unloading necks 8 displaced towards the inclined bridge, located along its axis adjacent to the coke bins 9 and connected to the first one in succession Started-feeders 2 and intermediate chutes 10, the hopper 11 one neck axis aligned with the axis of the unloading spout weight sinter funnel. To extend the dropout front. the trifles of the 0-5 mm fraction and the reduction of its content in the sinter loaded into the furnace, the double necks 31 of the bins 12, the F lines installed above the conveyors 5, are equipped with vibrating feeders 13 on one side and located above the metering scales 14, perpendicular to conveyor axles 5, and on the other side, vibrating screens of feeders 2 for sintering agglomeration, the sock 15 of vibrating screens 2 is inserted into the funnel 16 forming the charge profile on the conveyor 5, and its body 17 is suspended from height-adjustable shock absorbers 18 to the throat 19 ( d varying the angle of inclination of the plane races sowing agglomerate) and coupled through a rotating cam 20 with flywheel drive 21 (drive bond and a small footprint provide the necessary amplitude of oscillation). Agglomeration storage bins 22 are installed above the railway track axis for transporting coke breeze (a typical scheme for shipping coke breeze) and connected to the sintering conveyor conveyors their drive station 23 is installed above the cumulative bunker. The device works as follows. The charge materials — agglomerate, coke, additives are delivered to railway b-agons and aglovoes on the blast furnace ramp and unloaded into containers of bunkers, which are stretched to the left and right in three lines perpendicular to the axis of the inclined bridge. Moreover, from the bunkers with doubled and mountain BHHMH over the weight funnels of the agglomerate at the skip mill we screen out 30% of agglomere and ship them with conveyors to the ore yard of the blast furnace. In the case of delayed aglovoz use reserved reserves of sinter in linear bunkers located to the left and right of the inclined bridge. At the same time, the conveyors of sinter and agglomerates, vibrating screens are included: sinter feeders. The left or right agglomerate conveyors fill the 3 left and right weight-non-corrosive agglomerate depending on the position of the throw-over guide tray. Upon reaching the specified weight, the microswitch of the weighing head generates a signal to shut off the conveyor drives of the achlomer. During the operation of the conveyors, the agglomerate from the bins is supplied with the help of screening feeders, suspended from shock absorbers with adjustable height. A change in the angle of inclination of the screening plane relative to the horizontal plane provides the required quality of screening fines from the agglomerate and allows you to adjust its target performance. Trifle of agglomerate is discharged onto single-line conveyors into storage bins over the coke breeze railroad of a typical circuit. In order to reduce the size of the sinter feeder and improve the quality of sifting out of the sinter, the casing is connected through a rotating eccentric flywheel with an electric motor through a flexible coupling made in the form of an open ring of elastic material (for example, from a B 12 to 16 mm conveyor belt, which provides the desired long eternity in terms of vibration loads). The vibrodrive works only in the case of the presence of agglomeration-ga in bunkers. Thus, without expanding the cross-section of the reinforced concrete support structure of the bunker ramp and without the skipway we, by combining the suspension on the bunkers with a double throat of vibrating screens of additives and mirrored sinter of the agglomerate and making the appropriate connection between them, an agglomerate 100% drop out of agglomerate will be achieved. coming into the blast furnace. The use of the invention will give an annual economic effect of a blast furnace with a useful volume of 1033 m on the order of 95.4 thousand rubles.

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Claims (2)

1. DEVICE OF BUNKERS ON THE EXPLOSION OF THE BLAST FURNACE by ed. No. 960267, characterized in that, in order to reduce the agglomerate content in the raw materials loaded into the furnace, the double necks of the bunkers installed above the sinter conveyors are provided on one side with vibro .. additives feeders located above the metering weights mounted perpendicular to the conveyor axis, and on the other axis, it is mirrored by vibrating screens-feeders, and the screen toe is inserted into the funnel of forming the charge profile on the conveyor, and its body is suspended from the neck with height-adjustable shock absorbers and connected to the drive. eccentric flywheel. 2. The device pop. 1, t l, characterized in that the drives of the sinter conveyors for unloading its screenings are installed above the sinter accumulation hoppers located symmetrically to the axis of the inclined skip of the skip hoist. 1C H> Agglomerate Conveyor Agglomerate conveyor hopper 62 2J agglomerations inclined axle skipoboeo lift Axis J.A. the way Axis x q ways Fig / 22 sinter hopper I 115