SU1113414A1 - Charge distributor for blast furnace charging apparatus - Google Patents

Abstract

DIFFERENTIAL FURNACE LOADING DEVICE DISTURBANT DETECTOR, containing a single-slope funnel fixed on a hollow vertical driving rod, and a curved surface guiding element located under it, mounted on a driving rod located concentricly hollow, which is different in that the charge over the cross section of the furnace, the element is made in the form of a helixoid.

Description

i1

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

A known charge distributor of a charging apparatus of a shaft furnace, comprising a curved guide deviceJ having an individual rotational drive ij.

However, this guide device cannot load the furnace center. In addition, the generators of the guiding device have different angles of inclination to the horizon, which creates an uneven loading of the charge over the cross-section of the furnace top. In the case of a guiding device in the form of a truncated cone at the time of loading of the Uiihta along a small radius, the distance from the guiding device to the level of backfill is much greater than when loading along a larger radius. As a result, there is a scattering of the charge and the removal of small particles of the latter into the gas outlet.

The closest to the proposed technical essence and the achieved effect is the blast furnace charge distributor, which contains a single shed funnel fixed on a hollow driving vertical rod. and a guide element below it with a curved surface mounted on a drive rod located concentrically hollow 2.

However, the image of a well-known guide device has different angles of inclination to the horizon, which leads to uneven loading of the charge over the cross-section of the furnace and in the zone furthest to the center of the furnace it is impossible to load without additional edges. In addition, the rate of discharge of the charge from the guide device in the place of a steeper rise of the generatrix is much higher than in the place of a more hollow rise of the generatrix.

Consequently, with the fan loading of the charge, the latter forms unequal in composition of the mixture zones. Thus, in the design of the guide device, the uneven loading of the charge is incorporated, which is inexpedient.

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The aim of the invention is to improve the quality of the charge distribution in the home furnace over the top section.

5 The goal is achieved by the fact that in the charging unit of the charging device, containing a single-sided funnel, mounted on a hollow driving vertical bar y and located 1-1 the first element under it with a curvilinear surface, mounted on a driving bar located concentrically hollow, the element is designed as gelisoid.

5 In FIG. 1 shows the charge distributor of the charging device of the blast furnace, general view; in FIG. 2, section A-A in FIG. one.

The guide device 1, made in the form of a gel gel, is fixed on the rod 2, rotating the single-funnel 3 fixed on the hollow rod 4, through which the rod 2 passes. Guide device 1 s

5 with a funnel 3 installed in a sealed chamber 5, the upper part of which is equipped with chutes 6 and 7.

The guiding device 1 is made in the form of a helixoid. A gelisoid 0 is a developable surface, forming a straight producing straight line (thin lines in fig. 2), one end of which slides along) a cylindrical helical LIT1II (fig. 1, lines a, b, c, j).

, The right of all its positions is related to a straight circular cylinder (Fig. 2), but the production is straight (straight have angles - mag.L1}} a to the horizon.

a plane nepnei-schikurny to the axis of the cylinder, is obtained involute 8 (Fig. 1).

Charging materials are alternately coming from chutes 6 and 7 through a rotating

a solid funnel .3 and guide device 1 to the furnace.

The implementation of the forming guide device 1 in the form of a helix (with equal V-1 and tilt angles of 1 × 1) makes it possible to improve the quality of distribution of the charge materials. The side surface of the gelisoid can be ribbed.

5 The charge distributor can work both by stations and in the uniform distribution mode and carry out the fan loading when raven311

as 3 rotates and the guide device 1 is fixed,

In the main mode, the funnel 3 rotates simultaneously with the guide device 1 and, when rotated counterclockwise, the fan distribution of the charge occurs, i.e. uniform distribution of the mixture at the top of the furnace, and when rotated clockwise, shedding the mixture is more concentrated. The work on the stations is carried out when the mixture is fed into the furnace through the dawn; It has installed guiding devices 1 and a funnel 3.

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Making the gelisoid with an angle of inclination forming less than the angle of repose of the charge materials allows fixing the charge materials on the outer surface of the guide device, thereby providing a natural lining. This increases the durability of the guide device at no additional cost. The proposed device improves the distribution of charge materials over the cross-section of the blast furnace top, increases the productivity of the blast furnace and reduces the consumption of coke.

Claims (1)

BLAST FURNACE LOAD DEVICE BATTERY DISTRIBUTOR, containing a single-slope funnel mounted on a hollow vertical drive rod, and a guide element with a curved surface located below it, mounted on a drive rod located concentrically hollow, which is different in order to improve the quality of the charge distribution along the top section, the element is made in the form of a helisoid. figure 1 1 1 1