RU1138U1 - The device for loading the mixture on the sintering trolleys - Google Patents

Abstract

A device for loading a charge onto sintering trolleys, comprising a hopper with a material dispensing window, a drum feeder, a charge flow stabilizer made sectionally in the form of independently rotatable central and peripheral shelves bounded by end walls, characterized in that the peripheral shelves are inclined with a slope to the end walls stabilizer at an angle of 88 - 75 ° relative to the vertical plane passing through the longitudinal axis of the device.

Description

A device for loading the mixture onto speckle trolleys.

The proposed utility model relates to the preparation of iron ore in ferrous metallurgy, and in particular to the designs of sinter production.

It is known. J a device for loading a charge onto a conveyor sintering machine according to AC JP 1125459 class Р 27В21 / 06, containing a storage hopper with a charge dispensing window, a drum feeder, a charge flow stabilizer made in the form of two parallel plates bounded by end walls and equipped with a feed collector air, and also a loading tray.

A disadvantage of the known solution is the impossibility of changing the density of the mixture in the peripheral layers of the flow of the mixture. The closest in technical essence to the proposed technical solution / prototype /, according to the authors, is a device for loading the mixture onto sintering trolleys according to AS R1444505 class P 27 V21 / 06, containing a hopper with a material discharge window, a drum feeder, a charge flow stabilizer, made sectional in the form of independently rotatable central and peripheral shelves. A disadvantage of the known device is the low quality of the agglomerate, caused by different sintering speeds in the cross section of the agglomeration cake, its central and peripheral zones facing the end walls of the stabilizer.

The problem the technical solution is aimed at matching the change in the degree of gas permeability in the peripheral zones of the sinter cake with the change in the degree of compaction of the charge in the peripheral layers of the charge flow, facing the end walls of the stabilizer.

The problem the technical solution is aimed at matching the change in the degree of gas permeability in the peripheral zones of the sinter cake with the change in the degree of compaction of the charge in the peripheral layers of the charge facing the end walls of the stabilizer. This achieves a technical result such as improving the quality of the sinter due to the equalization of the sintering speed in the cross section of the sintering cake, its central and peripheral zones facing the end walls of the stabilizer.

The problem the technical solution is aimed at is matching the change in the degree of gas permeability in the peripheral zones of the sinter cake to the change in the degree of compaction of the charge c. peripheral layers of the flow of the mixture, facing the end walls of the stabilizer. This achieves a technical result such as improving the quality of the sinter due to the equalization of the sintering speed in the cross section of the sinter cake of its central and peripheral zones facing the end walls of the stabilizer.

The aforementioned drawback is eliminated by the fact that in the device for loading the charge onto the sintering carts of the sintering machines, comprising a hopper with a material delivery window, a drum feeder, a charge flow stabilizer made sectional in the form of independently rotatable central and peripheral shelves bounded by end walls, the peripheral shelves are made inclined with a slope to the end walls of the stabilizer at an angle of 88-75 ° relative to the vertical plane passing through the longitudinal axis of the device.

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the orientation of the peripheral floors of the stabilizer relative to the vertical plane passing through the longitudinal axis of the device. It follows that the proposed technical solution meets the criterion of novelty. The execution of the peripheral shelves of the stabilizer is inclined, with a slope to its end walls at an angle of 88-75 ° relative to the vertical plane passing through the longitudinal axis of the device, makes it possible to coordinate changes in gas permeability in the peripheral zone of the sinter cake, with a change in the degree of compaction of the charge in the peripheral layers of the mixture to the end walls of the stabilizer, which helps to equalize the sintering speed of the sinter cake in the cross section of its central and peripheral GOVERNMENTAL zones, and as a consequence leads to increased sinter quality.

 The proposed technical solution will be clear from the following description and the accompanying drawings:

Figure 1 - shows a side view of the device for loading the batch onto the sintering carts of sinter machines.

Figure 2 - shows a view A of figure 1; Figure 3 - shows a view B of figure 1

A device for loading the mixture onto the sintering trolleys of sintering machines comprises a hopper 1 with a window 2 for dispensing material, a drum feeder-3, a stabilizer -4 limited by end walls -5, and a loading tray -5. The stabilizer - 4 contains the central shelf -7 and peripheral shelves -8, the rotation system -9 shelves 7 and 8. The peripheral shelves -8 are inclined with a slope to the end walls - 5, the stabilizer -4 at an angle of 88-75 ° / depending from particle size distribution / to the vertical plane - B passing through the axis of the device. Swing system -9 shelves on; It has a lifting-lowering shaft - 10 with an adjusting screw -11.

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The device operates as follows: the prepared charge is fed into the storage hopper-1 and from there through the window-2 it is dosed with a drum feeder-3 onto the loading tray -o. After leaving the window -2, the charge first moves in the radial direction together with the surface of the drum, reaches the stabilizer -4 and is removed by it from the drum. In the zone of the central shelf -7, the charge moves rectilinearly on an inclined surface, and in the zone of the peripheral shelves -8 made oblique with a slope to the end walls of the stabilizer, the mixture moves in a curve of the tractor towards the end walls of the stabilizer. Moreover, in the area of the peripheral shelves -8, the mixture is unevenly compacted in the cross section of the charge flow with a smooth change in density towards its center. Moreover, the charge reaches the highest density directly at the end walls of -5 stabilizer. From the stabilizer, 4 the mixture falls onto the loading tray -b and is placed on the sintering trolleys of the sintering machine. During sintering of the sintering cake, leaks are formed in the charge layers adjacent to the sides of the sintering trolleys, moreover, the degree of their gas permeability smoothly changes in the direction from the center of the sinter cake to the sides of the sintering trolleys. Moreover, the maximum gas permeability is achieved in layers w ichts are directly bordering them on the sides of special bogies.

In the sinter production of NLMK JSC, the proposed solution was tested. As a result of the test, it was found that when the peripheral shelves of the stabilizer are tilted to a vertical plane passing through the device axis at an angle of more than 88 °, a smooth change in the charge compaction is insignificant and insufficient to prevent gas mixture leakage through &

leaks formed in the agglomeration pie, due to which the agglomeration pie is burned in the peripheral zone and the quality of the agglomerate decreases.

When the peripheral shelves of the stabilizer are tilted to a vertical plane passing through the axis of the device less than 75 °, a smooth change in the charge compaction in the peripheral shelves zone is excessive, the gas permeability of the sinter cake in this zone is reduced, as a result of which the sinter cake is not sintered in the peripheral zone and the quality of the sinter is reduced. The use of the proposed grafting agent ensures coordination of changes in the degree of gas permeability through leaks in the peripheral zone with a change in the degree of compaction of the charge, aligning sintering, agglomeration rate. cross section cake and ultimately S increase the quality of the agglomerate.

Head of ORiZ --- .V. Makashov.

Claims (1)

A device for loading a charge onto sintering trolleys, comprising a hopper with a material dispensing window, a drum feeder, a charge flow stabilizer made sectionally in the form of independently rotatable central and peripheral shelves bounded by end walls, characterized in that the peripheral shelves are inclined with a slope to the end walls stabilizer at an angle of 88 - 75 ° relative to the vertical plane passing through the longitudinal axis of the device.