RU1803426C - Blast furnace charge load device - Google Patents

Abstract

Usage: in metallurgy, in particular in systems for loading the mixture into blast furnaces. SUMMARY OF THE INVENTION: charge loading from loading conveyors is carried out in the receiving part of an inclined conveyor placed in an airtight pipe, the pressure of gases (nitrogen), in which there is more pressure of blast furnace gases. The upper end of the sealed pipe with an inclined feed conveyor is located above the distribution element. 2 ill.

Description

The invention relates to metallurgy, in particular to the mechanical equipment of blast furnaces, and can be used on blast furnaces of medium and large volumes.

The aim of the invention is to provide a compact device, continuous charge loading and ease of maintenance. .

In FIG. 1 shows a device for loading charge materials into a blast furnace, general view; in FIG. 2 - section of the unloading part of the inclined conveyor.

A device for loading charge materials into a blast furnace 1 contains: a distribution element 2, a shut-off valve 3, an airtight pipe 4, an inclined conveyor 5 and loading conveyors 6 with a locking system - hermetic tubes 7 with gas-tight valves 8, 9, funnels 10. Device for loading the charge materials, it is set so that the upper end of the sealed pipe 4 with the conveyor 5 is placed above the distribution element 2. The presence of the shut-off valve 3 allows you to separate the cavity of the blast furnace 1 and the pipe 4 for any repair and maintenance work on the inclined conveyor. In the lower receiving part of the inclined conveyor 5, perpendicular to its axis, by coaxial pairs, loading conveyors 6 are installed above the conveyor belt, placed in cylindrical sealed pipes 7, connected to the pipe 4 and cut off by gas sealing valves 8 on one side and 9 on the other. The number of loading conveyors 6 with a lock system is not limited and is determined by the technology to achieve the effect of continuous charge loading into the blast furnace 1. Conveyors 5 and 6 are made as known, and the angle with the horizon of the inclined conveyor is 9-16 °.

The device operates as follows. The charge materials from the hopper 11 are delivered to the receiving funnel 10 and through the open gas sealing valve 9 to the conveyor belt of the loading conveyor 6. When the charge approaches the gas seal (/)

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valve 8, its flow from the hopper 11 stops, valve 9 closes, the gas (nitrogen) pressure in the airlock 7 and pipe 4 are aligned, where the inclined conveyor 5 is located, and the gas (nitrogen) pressure in the pipe 4 is greater than the blast gas pressure, ( pressure equalizing devices are conventional and not shown in Fig. 1). After that, valve 8 is opened, the charge is poured onto the receiving part of the inclined conveyor 5 and delivered to the top of the blast furnace 1, through the open shut-off valve 3 to the tray distributor 2. In the lock chamber 7, the pressure is equalized to atmospheric and the loading cycle of the inclined conveyor is repeated.

Thus, the proposed combination of features makes it possible to reduce the number of loading equipment on the top of a blast furnace, by transferring it to the lower part of the inclined conveyor; to achieve convenience of servicing loading equipment during its operation and during repair work by personnel, since almost all equipment

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the building is located at or near the workshop mark; to ensure the continuity of the charge loading due to the installation by coaxial pairs of the required number of loading conveyors located in its lower horizontal part.

Formula A device for loading a charge into a blast furnace containing a distribution element and horizontally loading conveyors placed in sealed pipes with gas sealing valves installed under the hoppers, characterized the fact that, in order to ensure ease of maintenance, continuous loading of the charge, as well as the compactness of the device, it is equipped with an additional loading conveyor made inclined with a horizontal section and located in a sealed t Ube whose upper end is situated above the distribution member and provided with a shut-off valve, and the lower - horizontal, is connected to the sealed tube loading conveyors.