SU1296584A1 - Arrangement for air cooling of blast furnace bottom - Google Patents

Abstract

This invention relates to the field of ferrous metallurgy, in particular, to air cooling designs of the blast furnace floor. The purpose of the invention is to increase the durability of the floor and lengthen the turnaround time. The device is provided with annular inserts rigidly fixed in the end parts of the air-cooling pipes 10 on the side of the pressure collector 7, while the inserts are made with a variable cross-section throughput. The redistribution of the cooling air flows by the air cooled pipes 10 to the expense of variable cross-section inserts makes it possible to increase the resistance of the floor by 20-30% and increase the overhaul time of the HbBi period by 3-4 years. 4 il. (Q o 05 el 00 U Fi2.1

Description

(air) through inlet 6 to pressure manifold 7, sewed into foundation 5, after which through pipes 10 of air cooling to collector 8 and through branch 9 is removed from the air cooling system of the bottom.

Due to the fact that the insert 11 with a smaller flow area is installed in the ends of the pipes 10 air cooled f5

This invention relates to dimensional metallurgy, in particular, to air cooling designs for the blast furnace bed.

The purpose of the invention is to increase the service life and lengthen the turnaround time,

FIG. 1 shows a device for air cooling of the bottom of the deck.

blast furnace, top view; in fig. In front of the central approach, section A-A in FIG. one; in fig. 3-6 in the pressure manifold 7, and with the large assembly 1 in FIG. 2; in fig. 4 — junction section J — as the peripheral ends of the pressure manifold 7 are approached, the amount of cooling air passing through each pipe 10 is equalized. This ensures uniform cooling of the blast furnace bed over the entire horizontal section.

The application of the invention will improve the cooling efficiency, the resistance of the bottom by 20-30% and increase the duration of the overhaul under the metal bottom 4 are flooded with a period of 3-4 years. interconnected inlet 6, the high-pressure manifold 7, the discharge manifold 8, the outlet 9 and the air-cooled pipe 10.

In the end parts of the air-cooling pipes 10 on the side of the pressure collector 7, the ring inserts 11c are rigidly fixed with a variable cross-section, and the inserts 11 with a smaller opening are installed opposite the supply 6 in the pressure plate 35 to increase the resistance of the bottom section and extend the collector 7.ki of the turnaround time between The device for air cooling is equipped with annular inserts, the scientific research institute is running as follows rigidly fixed in the end face: fig.Z.

The air cooling device for the blast furnace bottom consists of a casing 1, on the inner surface of which vertical refrigerators 2 are installed, in contact with the refractory lining 3 supported on the metal bottom 4 welded to the casing 1. The junction of the bottom 4 with the metal casing 1 is installed in the annular opening of the foundation 5, in which

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Claims (2)

Invention Formula A device for air cooling of the blast furnace bottom containing air cooling pipes, a common pressure manifold with a central inlet and a common drainage collector with a central inlet, characterized in that About once. During the operation of a blast furnace, liquid smelting products accumulate in the furnace of the blast furnace, heating the lining 3 supported on the metal bottom 4, while the heat from the lining 3 is not transferred to the hood 1 protected by vertical cooling plates 2. For cooling the bottom of the bottom is supplied with refrigerant / 4- / (air) through inlet 6 to pressure manifold 7, sewed into foundation 5, after which through pipes 10 of air cooling to collector 8 and through branch 9 is removed from the air cooling system of the bottom. Due to the fact that the inserts 11 with a smaller flow area are installed in the ends of the air-cooling pipes 10 opposite the central inlet 6 to the pressure manifold 7, and with a larger section as they approach the peripheral ends of the pressure collector 7, the amount of cooling air passing through each pipe 10 is leveled. This ensures uniform cooling of the blast furnace bed over the entire horizontal section. The application of the invention will improve the cooling efficiency, the resistance of the bottom by 20-30% and increase the duration of the overhaul period by 3-4 years. 5 increase the resistance of the blade and the extension between the overhaul period, device Invention Formula A device for air cooling of the blast furnace bottom containing air cooling pipes, a common pressure manifold with a central inlet and a common drainage collector with a central inlet, characterized in that There are air-cooled pipes on the side of the pressure manifold, the inserts are made with a variable cross-section, while the inserts with a smaller cross-section are installed in the ends of the air-cooled pipes opposite the central supply of the pressure manifold, and with a larger cross-section at the peripheral ends of the pressure collector. .2 ig.d W Compiled by A.Anikhin Editor K.Voloshchuk Tehred M.Hodanich Order 719/29 Circulation 550Subscription VNIIPI USSR State Committee for Inventions and Discoveries 4/5, Moscow, Zh-35, Raushsk nab. 113035 Production and printing company, Uzhgorod, st. Project, 4 (Rig. Proofreader A.T. sko