SU1049548A1 - Charging apparatus for blast furnace - Google Patents

Abstract

1. LOADING DEVICE OF A DOMAIN FURNACE, containing a stationary charge distributor, bowls with cones, metering and differentiating receiving funnels installed above the upper cone, a gas lock, characterized in that, in order to improve the reliability of the charge distribution by removing the divider from the gas lock, the divider it is made detachable, the upper part of it being made movable, placed above the gas J-valves of the gate, and the lower part - the stadionar; Noah and is located under these valves. 2. The device according to claim 1, which is the fact that the lower part of the divider is made with the possibility of swinging. 3. The device according to Claim 1, about which the device is equipped with a conical guide funnel installed at the bottom end of the pipe. (L

Description

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The invention relates to ferrous metallurgy and can be used to load shaft furnaces, in particular blast furnaces.

Known design, stationary charge distributor with a typical charging device

The closest to the invention by its technical nature is a loading device containing a stationary charge distributor, cone-shaped bowls, metering and differentiating receiving funnels mounted above the upper cone, and a gas gate f2.

However, the known devices do not effectively control the gas flow around the circumference of the furnace. In addition, loading of the charge from the lower cone of the standard design does not allow unambiguously changing the distribution of charge materials along the furnace radius, as during the smelting process the angle of the charge surface of the charge on the furnace top changes and, consequently, the conditions for segregation of materials in the radial direction also change. .

The purpose of the invention is to improve the reliability of the distribution of the mixture for the account removal of the divider from the gas gate

The goal is achieved by the fact that in the boot device of a blast furnace, containing a stationary charge distributor, bowls with cones, metering and differentiating receiving funnels, are installed above the upper cone, the gas gate, the divider is detachable and its upper part is movable and mounted on gas valves of the shutter, and the bottom stationary and is located under these valves.

In addition, the lower part of the divider is capable of swinging.

At the same time, the device is equipped with a funnel guide installed in the lower cone.

Figure 1 presents the proposed € my device with a split divider, a vertical section; 2 - the same, with a central hole in the lower cone with a special direction of the funnel; Fig. Receiving funnel, top view.

The loading device consists of a receiving funnel 1, in which materials are poured from skip 2, placed on the tilting bridge 3 on the tilting device 3, In the receiving funnel there are two gas valves 4 above which the movable parts of the divider 5 are located, the electric motor moving the moving part of the divider is located horizontal square. Under the gas

the valve houses the stationary part of the divider 6, which can be made swinging (section AA) in FIG. 1). The stationary part of the divider is located in the gas shutter 7, the pressure of the gas in which is provided by filling or atmospheric valves (not shown). Below the stationary part of the divider is fixed 8 and the displacement of 0 to 9 metering funnels. The movable funnel does not reach the upper cone 10, which closes the bowl 11, at 100-200 mm. The lowering and closing of the cone is performed by means of the rod 12 and

S balancers (not shown). The bottom cone 13. closes the bowl 14 using special gussets 15 and fastens to the rod 16. The boot device rests on the support ring head 17. A conical guide funnel 18 is inserted into the hole of the lower cone 18. The mixture from the bottom cone and through its hole gets on the furnace top 19.

 The capacity above the lower cone is calculated so that part of the coke of each feed is poured off last and gets into the center of the furnace. It is possible to charge., In a cycle of innings of different volumes, for example AAK AAKK; AAK LAKKK;

0 AAK KAAKK, etc. You can load the AAKK1 feed to the lower cone and, without lowering it, pour the next feed from one coke (KK or KKK) from the top cone, which falls into

5 center of the furnace.

Fig. 3 shows the position of the dividers above the loading openings, with 1 arrows - a possible offset of the dividers to increase the current flux of materials from the axis of the inclined bridge or from the opposite side ..

The boot device operates as follows.

c. When tipping skip 2, valves 4 are open and materials are poured into the upper part of dividers 5. and two streams fall on the stationary part of the dividers 6, from where they are sent by the corresponding gutters (at an angle of 90 ° to each other) to the metering distribution funnels 8 and 9, the mixture is averaged over the circumference, which then continues when the research institute of materials upper, and then from the lower cones. The funnel 9 can rise after the charge is poured into it, which is then slowly poured into the bowl 11 of the upper hinge .. 10 (according to the hourglass principle), which increases the circumferential uniformity in the distribution of materials and gases. Before sealing the upper cone, the sealing gaskets close and at. The gas shutter 7 is equalized with the gas pressure at the throat 19. The movable part of the dividers 4 can be moved in a horizontal plane (the dashed lines in section A-A). At the same time, charge materials are unevenly divided and this can be used to regulate the gas flow. You can run a rotary divider and lower gas valves (right 2-grooved bunker).

During the lowering of the upper cone, the materials are poured into the bowl 14 of the lower cone 13, with the corresponding amount of coke falling through the opening of the upper cone into the central zone of the furnace. A conical funnel 18 is provided to bring the coke directly into the center of the furnace and to eliminate the effect of the fixing gangsprings 15. The funnel guides the coke through the narrowing chute, which ensures a continuous flow of coke behind the fixing gussets. In addition, bulk materials on the lower cone lowered to different heights, it is possible to redistribute the charge between the peripheral and central zones of the taper (Fig. 2). Lowering and closing of the cones is done

0 using rods 12 and 16, as well as balancers and a cone winch (not shown). -

Thus, it is possible to unambiguously vary the ore loads by the radius of the furnace in the required ratio. The economic effect from using a single-blast furnace with a volume of about 2000 m will be 750 thousand rubles. in year.

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Claims (3)

(5?) 1. LOADING DEVICE OF A DOMAIN FURNACE, containing a stationary charge distributor, bowls with cones, a metering and differentiating receiving funnel mounted above the upper cone, a gas shutter, characterized in that, in order to increase the reliability of the distribution of the charge due to the removal of the divider of a gas shutter, the divider is detachable, the upper part of it being movable, mounted above the gas shutter valves, and the bottom stationary and located under these valves. 2. The device according to claim 1, characterized in that the lower part of the divider is made with the possibility of swinging. 3. The device according to claim 1, with the fact that the device is equipped with a conical guide funnel installed in the lower cone.