SU1372168A1 - Device for loading charge to electric furnace - Google Patents

Abstract

The invention relates to the field of metallurgy, specifically to devices for charging the charge to the furnace. The purpose of the invention is to prevent the destruction of the furnace lining, improving working conditions. When the crane loads the loaded copier 1 into the furnace, the frame 10 is installed on the working platform of the furnace, the latches 9 lock the vehicle onto the desired holes 8 of the rods 6, and the device is lowered until the stops of the 9 latches rest. place

Description

(L

with to

O) 00

The muds fixed in the upper part of the frame 10. At the same time, the casing 1 hangs on the rods 6, and the plugs 4 continue to lower, releasing the flaps of the bottom 2, and the charge is discharged into the furnace. When lifting the yoke 7, the sequence of actions is the opposite. This significantly reduces the wear of the furnace lining, which increases its service life between repairs and increases the productivity of the furnace. 3 il.

one

The invention relates to metallurgy, namely, devices for loading the charge into an electric furnace.

The purpose of the invention is to prevent the destruction of the furnace lining and improve working conditions.

1 shows a device for loading the charge in an electric furnace, general view; figure 2 - section aa in figure 1; on fig.Z - section bb in fig

The device comprises a cylindrical casing 1, in the lower part of which the flaps of the bottom 2 are pivotally attached, which are cut off sections from the cylindrical surface and, in the open position, are an extension of the side surface of the casing 1.

The flaps of the bottom 2 are provided with lugs 3 connected to the bars 4 by means of the rings 5.

Ti 4, placed in the hollow rod 6, the upper ends are connected to the crossmember 7. The rods 6 lower ends attached to the inner wall of the casing 1 and have from the outside symmetrically located on both rods 6 holes 8.

A retainer 9 is mounted on the rods 6 with the ability to move them along the rods 6 and fixing them on the holes 8.

The casing 1 with the rods 4 and the rods 6 is enclosed in a support frame 10 having plates 11 fixed at the top of the plate, made with grooves for placing the rods 6 therein. A centering ring 12 is installed on the bottom of the support frame 10.

The device works in the following way.

The device, suspended on a hook for the yoke 7, is loaded with the first portion of the charge. At the same time bottom flaps

0

five

0

five

0

five

0

2 tons of gami 4 are kept in the closed position. The tabs 9 are installed on the upper pair of holes 8 and fixed on them. A crane is fed to the furnace and lowered onto the barrier window, aligning the axis of the device with the axis of the furnace, using the centering ring 12, as a guide. Down to the upper edge of the furnace, the support frame 10 is mounted on it, and the rest of the device continues to move down until the latches 9 touch the plates 11. As a result, the casing 1 hangs on the support frame

10 held by latches 9. Traverse 7 and mounts 4, moving down, release the flaps of the bottom 2.

Under the weight of the charge and the net weight of the flap of the bottom 2 is opened and the charge is poured into the furnace, the length of the rods 6 is chosen so that the opening of the flaps of the bottom 2 takes place at a short distance from the furnace in order to prevent its destruction by the falling charge. Then the device is lifted up by a crane, while the yoke 7 and the gig 4, moving up, close the flaps of the bottom 2, after which the casing 1 starts to move upwards, which reaches the plates

11, lifts up the support frame 10.

While the first portion of the charge melts, the device is filled with a second portion. The clips 9 move down along the shchtangs 6 and are installed on the next pair of holes 8, thus reducing the stroke of the casing 1 relative to the support frame 10. A second portion of the charge is loaded into the furnace. The distance between the pairs of holes 8 is set equal to the magnitude of the level rise.

molten metal after loading into the furnace of the next portion of the charge. As a result, the opening of the flaps of the bottom 2 takes place at a small distance from the level of the molten metal and its splashing, and the destruction of the hearth and the furnace walls by the falling charge does not occur. I

The same operation is repeated when loading subsequent batches during smelting. Each portion of the charge in the smelting corresponds to a certain pair of holes 8. This significantly reduces the wear of the furnace lining and increases the turnaround time for its operation, which increases the productivity of the furnace and reduces the repair costs.

A a

FIG. 2

Claims (1)

Invention Formula A device for loading the charge into an electric furnace, containing a housing placed in the support frame, in the lower part of which the bottom flaps are hinged, connected to the crosshead by means of connecting links and By the fact that, in order to prevent destruction of the furnace lining and to improve working conditions, it is equipped with hollow rods fixed to the side surface of the casing, clamps made with the possibility of vertical movement along the rods, the rods being placed into the hollow rods, and symmetrically arranged holes for locking the clips on them. Ss