SU1446164A1 - Charging arrangement for shaft furnace - Google Patents

Abstract

The invention relates to blast furnace production and can be applied to infinite charging devices of blast furnaces. The purpose of the invention is to reduce the consumption of coke by providing a central feed of the charge to the turn. tray and reduce the fragmentation of charge materials. After the gas sealing and charge shut-off valves 3 and 4 are opened, the charge materials from the hopper 2 are fed to the storage box. bunker 5, where the flow of the charge

Description

with

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f

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1

wall 9 is divided into two symmetric streams. After that, the material enters the cavity of oblique chutes and B vertical cylindrical chute 7, where the streams collide and form one stream falling on the tray 8,

The axial loading of the rotary chute is achieved by dividing the flow of shicts flowing from the bunker, turning parts of the stream by an angle of 90 ° and fixing the flow along the axis of the furnace in the cylindrical trough. 3 il.

one

The invention relates to ferrous metallurgy, and w-1 to equipment 1 and blast furnaces.

The aim of the invention is to reduce the consumption of coke by providing a central feed of the charge to the rotating tray and reducing the fragmentation of the charge materials.

Figure 1 presents the boot device, a general view; fig. 2 - floor cylindrical insert. in FIG. 3, section A-A in FIG. 2,

The loading device of the mine shaft consists of a receiving funnel - 1j of two lock bunkers 2, equipped with gas sealing 3 and charge-shut-off 4 valves (closures) of the collecting bin 5, which includes the upper part of the hollow insert b installed above the vertical cylindrical trough 7, and Also, the driving rotating distribution chute 8. In the cavity of the storage bin 5 a flat wall 9 is mounted so that its plane of symmetry coincides with the plane passing through the axes of the lock bins 2. The floor is inserted It is equipped with two hollow circular chutes lOj passed through diametrically located holes made in her body and set so that their axes form an acute angle ((54-58) with the furnace axis and lie in a plane perpendicular to the plane of symmetry of the wall 9.

The channel of the hollow inserts b is performed with such geometrical parameters (c), in which the phenomenon of the wreckage of the charge is excluded in their bands when the material flow passes through.

The boot device operates as follows.

Previously through the drive set distributive

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0

five

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five

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Tray 8 to one of the ring stations of the furnace top, and then turn on the drive of rotation of tray 8 relative to the furnace axis. After that, open the gas sealing 3 and the outgoing 4 Kjranaiib of one of the bunkers 2 and the flow of nixiXTODOi o material flowing from the lock bunker 2 ,. by means of a flat wall 9, it is divided into two cHMNieTpH4Hbix: flow. After filling in the 1х.х ГЁЫК: the sizing of the space between the housings of the hopper of the tel hopper .5 to the insert b, the material enters the 3. Floor of the OS (And the fugous X of the leak 10, the two streams moving on both sides of the flat walls 9 smoothly change the movement of the camouflage by 90 and move one towards the other.After mentioned flows of charge material after passing through the leakage 10 collide in the zone whose center lies on the furnace axis.As a result, the ash pieces extinguish the energy of the movement and further under the force of t gesture moving downward, without contact with the walls of the cylindrical; -heloba 7 throughout the flight up to contact with the surface of the distribution tray 8 "The flow of charge material formed in the cavity of the insert 6 is directed so that its axis coincides with the axis of the furnace, i.e., the aforementioned flow contributes to the axial supply of the charge to the distribution tray 8. After the passage of the ring station by the tray 8, a backfill is formed on the top surface, which is characterized by a uniform circumferential and radial distribution who are you

The invention makes it possible to reduce coke consumption by 0.5-1% by improving the distribution of the charge by

314A61

providing axial loading of the charge material to the distribution tray, as well as reducing the crushing of materials by damping the energy of motion of the counter flow of the charge coming in contact with each other in the cavity of the FLUID insert.

Claims (1)

Invention Formula A charging device for a shaft furnace containing a series of charge bins with charge-separation and gas sealing valves, under which is placed a storage bin with a vertical cylindrical chute and a rotating chute mounted under it, characterized in that 2 0 five 0 64 central supply of the charge to the rotating tray and reducing the fragmentation of charge materials, the device is equipped with a vertical section placed in a storage bin above the vertical cylindrical chute and coaxially with it a cylindrical insert, a vertical wall in the plane passing through the vertical axes of the charge bins and rigidly connected with a cylindrical insert and in the insert there are holes in which cylindrical chutes are installed, which are located opposite to 6 planes perpendicularly the cylindrical vertical separation wall, and the axes of the cylindrical leaks form an acute angle with the axis of the furnace. FIG. five