SU1381163A1 - Blast furnace cooling arrangement - Google Patents

Abstract

The invention relates to the field of metallurgy, in particular to the domain production, and can be used in shaft type furnaces in nonferrous metallurgy. The aim of the invention is to increase the cooling efficiency of a blast furnace. At the height of the lining in the vapor, the supply of the cooler through the nozzle 10 to the horizontal refrigerators 5 provides cooling of the high heat-conducting liner 7, which contributes to the formation of the skull on the walls of the furnace. When one of the vertical coolers 3 burns through, the cooling of the plug 7 and the high thermal conductive ring 8 provides intensive cooling of the damaged refrigerator 3, which contributes to the durability of the blast furnace, lengthening the turnaround time. Improving the efficiency of the cooling of the furnace is provided by improving the conditions for filling the garnish on the walls of the furnace shoulders. 4 hp ff, 6 ill. i (L

Description

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The invention relates to metallurgy, in particular to the domain production, and can be used in shaft type furnaces in nonferrous metallurgy.

The aim of the invention is to increase the efficiency of cooling the furnace by improving the conditions for increasing the garnish on the walls of the furnace shoulders, increasing the durability of the blast furnace and lengthening the turnaround time.

Figure 1 shows a device for cooling a blast furnace, a general view; figure 2 - node 1 in figure 1; on fig.Z - section aa in figure 2; FIG. 4 shows the assembly 1 on. FIG. 1, the metal insert is filled with a ledge; Fig. 3 shows a cylindrical protruding part of an insert; FIG. 6 shows the projecting parts of the insert, made in the form of a perfect horizontal axis.

On the inner surface of the casing 1 of the blast furnace, there is a refractory lining 2, in which vertical refrigerators 3 are installed, having semi-cylindrical cutouts 4, in which horizontal tuyere-type refrigerators 5 with a gap 6 are installed.

In the rypny part of the horizontal coolers 5, inserts 7 of high-heat-conducting metal (for example, copper) are installed, contacting the surface of the notches 4 of refrigerators 3. In the gap 6, a ring 8 is installed of a high-heat-conducting material (copper, graphite, aluminum alloy) that contacts the insert 7 and the surface cutouts 4, while the cavity of the gap 6 between the ring 8, the cutouts 4 and the outer surface of the horizontal refrigerator 5 is filled with heat-resistant heat-conducting mass 9, the horizontal refrigerators 5 are made with supply and discharge pipes 10 in a metal casing; To ensure the possibility of replacing refrigerators 5, flange fittings 11 are installed.

The protrusions 12 liners 7 for vertical refrigerators 3 can be made 1u lindric or in the form of horizontal metal plates 13, forming a discontinuous horizontal along with.

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The projections 12 of the liners 7 can be performed in the range of 0.1-0.4 digits-. the thickness of the vertical cooler, nick 3. The gaps between the vertical refrigerators 3 and the casing 1 are filled with heat-resistant heat-conducting mass 9.

The device for cooling the blast furnace operates as follows. The cooler supplied to the vertical refrigerators 3 and the horizontal refrigerator 5 of the tuyere type ensures optimum cooling.

5 of the casing 1 and the refractory lining 2. When the last blast furnace in the vapor joint blows, the supply of the cooler through the pipes 10 to the horizontal refrigerators 5 provides cooling of the insert 7 with the protrusion 12 behind the vertical refrigerators 3 and contributes to the formation of garnish on the furnace walls. When one of the vertical coolers 3 burns, the cooling of the liner 7, which contacts the surface of the cutouts 4, and the high-heat conducting ring 8, which contacts the surface of the cutouts 4 and the outer surface of the horizontal refrigerator 5, provides intensive cooling of the damaged refrigerator 3, which contributes to the durability of the blast furnace, lengthening the overhaul period, the use of flange covers II provides the possibility of replacing horizontal refrigerators 5,

Applying the invention improves cooling efficiency.

0 blast furnace by keeping garnissage on the walls of blast furnace shoulders, which provides an increase in the resistance of the blast furnace by 20-30% with a longer turnaround time

5 for two years.

Claims (5)

Invention Formula 1, A device for cooling a blast furnace, consisting of vertical plate coolers, in the cutouts of which horizontal tuyere-type refrigerators are installed, characterized in that, with the 5 aim of increasing the cooling efficiency of the furnace by improving the conditions for increasing the garnish on the walls of the shoulders, the device it is supplied with inserts from high-heat conductive metal, installed from the main part of horizontal coolers of the tuyere type, in contact with the surface of the cut-outs of vertical refrigerators. 2. The device according to claim 1, about tl and - the fact that it is equipped with rings of highly heat-conducting material, installed without gaps in the annular gap between the horizontal refrigerators and cut-outs of vertical refrigerators, while the rings are installed in contact with surface liners. 3. The device according to paragraphs. I and 2, characterized in that each The plug is made with a ledge beyond the vertical coolers, with the height covering the annular gap between the cut-outs and the horizontal cooler, 4. A device according to claims 1-3, characterized in that the protruding part of each insert is cylindrical. 5. The device according to PP, 1-3, which is the fact that the protruding part of each liner is made in the form of strips forming a continuous horizontal along with. cpue.i Aa ftsg.Z FIG. FIG. five FIG. 6