SU539941A1 - Foundry yard blast furnace - Google Patents

Description

one

The invention relates to ferrous metallurgy, in particular, to equipment intended for the production of smelting products from a large volume blast furnace.

A well-known large-volume blast furnace equipped with a technological platform for servicing tuyeres and chutes for the production of pig iron and slag, located under the technological platform, is a furnace. With the release of fusion products for the suction of gases, the chute is blocked by a recoil roll.

However, the main chute, located under the technological platform for servicing the tuyeres in the immediate vicinity of the cast-iron notch, with the release of smelting products remains open and all of the outgassing that is formed upon release remains in the blast-furnace shop.

The purpose of the invention is to increase the degree of sealing of the gutter.

This is achieved by the fact that the platform for servicing the tuyeres is provided with two flaps located on both sides of the main trough and installed with the possibility of rotation in a vertical plane with the help of actuators mounted under the platform.

In FIG. 1 shows the proposed device in the repair of the main chute blast

stoves; in fig. 2 - the same, with the release of products smelting from the blast furnace.

The blast furnace foundry yard contains a technological platform 1 for servicing tuyeres, under which the main chute 2 is located for the production of smelting products. Iodine pad 1 in the hinged bearings 3 and 4 are mounted with sash 5 and b, connected by levers 7 and 8 through hinges 9 and 10 with hydraulic cylinders 11 and 12, which are installed in hinged supports 13 and 14.

The device works as follows. To cover the main trough 2 when releasing the smelting products from the blast furnace, first

the hydraulic cylinder 12 is turned on, during which the lever 8, together with the flap, rotates in the pivot bearing 4, and at the end of the stroke of the hydraulic cylinder 12, the flap 6 takes the position shown in FIG. 2. Hydraulic cylinder

1-2 is rotated in the pivot bearing 14. After this, the hydraulic cylinder I is turned on, the lever is rotated together with the flap 5 in the pivot bearing 3, and at the end of the stroke of the hydraulic cylinder And the flap 5 occupies

The position shown in FIG. 2. The cylinder 11 is thereby rotated in the pivot bearing 13.

During the release of the heat from the zone formed by the main chute 2, the flaps 5 and G

and by pad 1, the gases are sucked through the filters outside the blast furnace. After the release of smelting from the blast furnace is completed, the hydraulic cylinder 11 is first reversed and the flap 5 occupies a horizontal position, shown on pa fpg. 1. Then the reverse stroke of hydroelipdra 12 is turned on, and the flap 6 occupies the initial position. The cylinders 11 and 12 are equipped with locking devices. Control of hydraulic cylinders remote.

The proposed device provides for the mechanization of safe shelter for the main chute under the platform during the production of smelting products from the blast furnace, which allows for the organization of a suction of harmful

gas emissions outside the blast furnace, as well as to prevent thermal effects of smelting products on the staff.

Claims (1)

Invention Formula The foundry yard of the blast furnace containing a platform for servicing the tuyeres, which overlaps the downstream chutes with umbrellas, characterized in that, in order to increase the degree of sealing of the chute, the platform is equipped with two hingedly attached to it both sides of the chute, which are connected to individual turn actuators.