SU870435A1 - Burden distributor of blast furnace charging apparatus - Google Patents

Description

(54) DISCHARGE DISCHARGE LOADING EQUIPMENT

DOMAIN FURNACE

one

The invention relates to metallurgy, in particular, to equipment for loading devices of shaft furnaces, and can be used most effectively in a blast furnace charging apparatus.

Known distributors of the charge of the charging apparatus of shaft furnaces, containing a single-slope rotating funnel fl.

The most obvious to the invention, by its technical essence and the achieved positive effect, is the charge distributor of the blast furnace charging unit, which contains a single-slope funnel, and a guide element located below it, having individual rotational drives and a common axis of rotation 2.

A disadvantage of the known charge distributor is that the charge, scattered along the guiding element I with a stream of a certain width, is scattered, since the angle of inclination of the generators is different. In addition, the lengths of the fluxes forming across the width are different, with the result that the charge is distributed unevenly, i.e. the last scattering takes place over the top furnace.

The guide element has an increased structural complexity of manufacture and great difficulties in balancing when installed in a furnace.

The aim of the invention is to improve the distribution of the charge and reduce: coke consumption in the device.

The goal is achieved by the fact that the lateral surface of the guide element is made with step-like cutouts formed by horizontal and vertical half-planes, while the horizontal half-planes are located on

15: different heights, and notches are limited by edges.

The working surface of the guided device, bounded by ribs, can be made of a concave shape.

20

The outer surface of the cutouts is stepped.

FIG. 1 shows the charge distributor of the charging apparatus of the shaft furnace; in fig. 2 - section AA

25 of FIG. 1 | in fig. 3 shows a section BB in FIG. 2, in FIG. 4 - working surface of the guide element.

In a sealed chamber 1 directly supported on the dome part 2 of the blast furnace shell and

Claims (2)

30 communicating with its working space, distributors are installed, which contain a horizontal funnel 3 that rotates in the horizontal plane a funnel 3 suspended on a rotationally connected hollow vertical bar 4 and located below the funnel 3 in the videoconus whose side surface is made with stepped notches 6 formed by horizontal and vertical intersecting half-planes of radius. located at different heights, with the cutouts of the guide (devices 5 are limited by ribs 7. The guide element 5 in the form of a stepped cone is suspended and rigidly fixed on a vertical pivot rod 8 missed inside the hollow rod 4 and coaxial with it. The bar 8 is connected with rotational drive (not shown). The working surface 9 of the guide element 5 can be made concave, and the outer surface can have additional cuts 10. The charge distributor works as follows. The charge from the charge paths is sealed A blended chamber enters the neck of the funnel 3, installed by its outlet orifice opposite the corresponding cutout of the b guiding device b, bounded by the ribs 7. The charge distributor can operate both in stations and in the uniform distribution mode and load the charge fan when the funnel 3 rotates, and the guide element 5 is set stationary. The main mode provides for the continuous rotation of the funnel 3 at the same time as the guide element 5 The batch of the charge through the pre-stopped funnel 3 and the guiding element 5. Thus, the radial and circumferential distribution of the charge on the top of the blast furnace is controlled. The operation of the charge distributor can be (fully automated. The execution of the guide element 5 in the form of a cone, the lateral surface of which is formed by stepped notches, allows for a high-quality circumferential and radial distribution of the charge, while the design and manufacture of the guide body is simplified. It is impossible to obtain the distribution of the charge crests in the same way as a standard cone. A technical and economic comparison of the proposed technical solution Eni with the prototype showed the possibility of increasing the productivity of the blast furnace by 10-12% and reducing the consumption of coke by about 5-10%. In comparison with the known, the proposed technical solution has higher technological capabilities. Formula 1. Distributor of the charge of the blast furnace charging apparatus, containing a shed funnel and a guiding element located under it, having individual rotational drives and a common axis of rotation, so that, in order to improve the distribution of the charge and lower tim coke consumption, side surface of the guide member is formed with stepped notches formed of horizontal and vertical intersecting pol.uploskost E and is provided with ribs bounding the recesses, the horizontal half-plane are arranged at different heights. 2. The distributor according to claim 1, wherein, that the working surface of the guide member, bounded by the ribs, is made in a concave shape. 3 Distributor on PP. 1 and 2, characterized in that the outer surface of the notches, limited by the ribs, is stepwise. Information sources. taken into account during the examination 1. Authorship certificate sSSR №12557b, cl. From 21 to 7/18, 1976. 2. USSR author's certificate for application No. 2412154, cl. C 21 V 7/18, 1976 (prototype). YU Sh