SU1386663A1 - Blast furnace tuyere - Google Patents

Abstract

This invention relates to the field of metallurgy, in particular to cooled lances of a blast furnace. The purpose of the invention is to increase the durability of the tuyeres. The tuyere contains a coolant tube 1 passing through the flange 2 and diaphragm 4 to the toe 3. Box 5, spaced with gaps relative to the outer 6 and inner 7 cups of the tuyere, forms with the diaphragm 4 an annular manifold 8 communicating with the annular gaps 9 and 10 between the insert and the tuyere glasses. The insert is filled with a longitudinal collector blocked by a septum 13 on the side of the discharge pipe 12. The increase in the tuyere bone is achieved by improving the organization of the coolant duct and, consequently, the intense heat removal in the nose of the tuyere. 3 il. i (L

Description

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The invention relates to metallurgy, in particular, to cooled blast furnace tuyeres.

The aim of the invention is to increase the durability of the tuyere.

FIG. 1 shows a tuyere, longitudinal section; in fig. 2 - section AA

in fig. one; in fig. 3 - insert, axonometric (rotated) .10

The tuyere contains a coolant tube 1, passing through the flange 2 and fitting to the toe 3, diaphragm 4. The insert 5, placed with gaps relative to the outer 6 and 15 inner 7 cups of the tuyere, forms with the diaphragm 4 a collector 8 that communicates with the annular gaps 9 and 10 between the insert and the tuyere glasses. In the insert, a longitudinal 20 collector 11 is formed, which is blocked by a partition 13 on the side of the discharge pipe 12. The lance is cooled as follows.

Refrigerant through the supply tube 1 25 1 FIG. P located in the upper part of the tuyere and passing through the flange 2 enters the sock 3, separated from the rest of the tuyere by diaphragm 4 with a notch in the lower part for 30 refrigerant outlet, which initially enters the gap between the front end of the insert 5 and diaphragm 4. The gap bounded by the outer 6 and inner 7 cups forms a collector, c torus 8, which communicates with the annular gaps 9 and 10 between the insert and, accordingly, the outer 6 and the inner cup: 7 cups. Cooler, pop. into ring collector B, fills it 40 and is distributed evenly throughout

annular gaps 9 and 10. In addition, the cooler fills the longitudinal collector 11, from which it is directed in the meridional direction, to compensate for the hydraulic losses of the flow moving from the annular collector. As a result, the flow rate of the refrigerant as it moves through the gaps 10 and 9 between the inner and outer cups is maintained sufficient for efficient heat removal.

The coolant is withdrawn from the tuyere through the discharge tube 12. The partition 13 in the longitudinal collector eliminates the possibility of free refrigerant overflow.

The use of the invention makes it possible to increase the durability of the tuyere by improving the organization of the coolant duct, which ensures an intensive heat exchange in the nose of the tuyere.

Claims (1)

Invention Formula . A lance of a blast furnace containing outer and inner glasses forming a cooled cavity, a flange and a sock, a diaphragm with a cut-out, an insert with channels for supplying and discharging a cooler in the nose of the lance, characterized in that it increases its resistance by improving the organization of the coolant path, the insert is set relative to the diaphragm and the glasses with a gap, forming annular collectors with the latter, and at least one longitudinal cut is made on the forming insert. 13 srig.z