SU1420026A2 - Charge distributor of blast furnace charging arrangement - Google Patents

Abstract

The invention relates to ferrous metallurgy and can be applied in blast furnace charging devices. The purpose of the invention is to increase the service life of the distributor and save coke by increasing the circumferential uniformity of the distribution of charge materials on the head. Zyfek 5, rigidly fixed on the bottom of the funnel 1, the edge-stabilizer 6, located around the perimeter of the distribution element 3. The edge-stabilizer 6 holds the layers 7 and 8 of the charge and provides a uniform flow of 9 charge. When changing the charge of the charge from the funnel 1, the gap under the visor 5 changes, which ensures self-regulation of the charge of the charge. 1 silt (/)

Description

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The invention of the RELATION-ENA to ferrous metallurgy, namely to the charging devices of blast furnaces.

The purpose of the invention is to increase the service life of the distributor and the economics of coke by increasing the circumferential uniformity of the distribution of charge materials at the top.

The drawing shows a general view: the charge distributor. To the bottom part of the funnel 1 is rigidly attached I removable visor 5o On the surface of the I distribution element 3, ne ne 1, there is an edge-stabilizer - I dam 6.

The distributor works as follows

From the drive (not shown) through, the rods 2 and 4 rotate to i funnel 1 and distributor element 3, which can rotate both synchronously and at different speeds, loaded into a blast furnace, from a rotating the funnel 1 enters the upper part of the distributing element 3 and spreads over its surface in a wide layer, in which three layers can be distinguished in height. Layer 8 occurs in the process of dumping the mine material along the distribution element 3 as a result of the influence on the flow of the charge by the stabilizer rib 6 located across the flow and layer 7, the upper boundary of the layer 8, changes

in the process of loading, depending on the flow rate of the material from the funnel 1 due to the change in pressure on this layer from the flow of charge 9 moving through it, the third layer. Layer 8, held by edge 6, moves much slower than mainstream 9, and its lower boundary is almost stationary.

When the charge material is consumed uniformly, a gap is formed between the visor 5 and the layer 8, which ensures an even outflow of the charge stream 9. accordingly, increasing the consumption of the charge to the original level. By increasing the flow rate from the funnel, layer 8 increases, creating additional resistance to flow 9 from funnel 1, reducing it to its previous value.

Thus, the edge 6, holding the layer 7 and 8, allows to obtain an equal consumption of the charge material from the funnel 1 and a uniform flow of the charge material loaded into the blast furnace. Layer 7 and the low-mobility layer 8 lining the surface of the distribution element, protecting it from wear by the main flow of the charge 9.

Investigations were carried out on the operating model of a funnel-sleeps type charge dispenser at a scale of 1: 5. For a distributor having a clip. Without a stabilizer rib, the material is distributed as follows;

30.6 32.3 33.1 33, 5 34.0 31.8 31.1 29.5

The unevenness of the distribution is 14%

1 2 3 4 5 6 7 8 32.0 31.8 31.8 31.5 31.5 31.3 32.1 32.3

7

eight

To distribute a gel that has a clip with a stabilizer rib, the material is distributed as follows:

The uneven distribution of material across eight sectors was 3.1%.

Thus, the edge stabilizer provides a more uniform flow of charge material from the funnel. Circumferent irregularity is reduced by 11%.

The service life of the distribution element (sliz) will increase due to the removal of its surface by 1.5-2 times (by 6-12 months).

Claims (1)

Invention Formula The distributor of the charge of the charging device of the blast furnace, according to auth.St. No. 990821, characterized in that, in order to increase the service life of the distributor and save coke by increasing the circumferential uniformity of the distribution of charge materials at the top, the distributor is equipped with a stabilizer rib rigidly fixed on the distribution element perpendicular to its circumference.