Rotary wind tower and pelletizing annular cooler

Abstract

The invention discloses a rotary wind tower comprising a rotary tower (1) containing an air chamber, a fixed wind pipe (2) supplying air to the air chamber of the rotary tower (1), and wind branch pipes (3) evenly distributed on the periphery of the rotary tower. The fixed wind pipe is arranged on an air inlet of the rotary tower (1) and in a movable sealing connection with the same; when the rotary tower (1) rotates relative to the fixed wind pipe (2), a connection part therebetween is sealed; and an air inlet end of each wind branch pipe is communicated with the air chamber of the rotary tower (1) and provided with a wind controlling valve (4). Air can be supplied to a wind case continuously rotating by the rotary wind tower, so air supplying of a sealing connected wind case can be achieved. The invention further discloses a pelletizing annular cooler equipped with the rotary wind tower.

Description

technical field [0001] The invention relates to the technical field of metallurgical equipment, in particular to a rotating wind tower for supplying air to a pellet-type annular cooler for cooling pellets. The present invention also relates to a pellet type annular cooler provided with the rotating wind tower. Background technique [0002] The direct reduction ironmaking method is one of the cutting-edge technologies in the iron and steel industry. This technology reduces the ore below its soft melting point to obtain solid metallic iron. The product of this process forms a microporous structure during the reduction process, so it is called sponge iron, and because sponge iron mostly appears in the form of pellets, it is also called direct reduction pellets, or reduction pellets for short, and the reduction pellets contain less impurities. , is the main raw material for the production of high-quality pure steel. [0003] The temperature when the reduced pellets leave the k...

AI Technical Summary

Problems solved by technology

[0005] Since the direct reduction pellets have extremely high sealing requirements, the oxidized pellet annular cooler cannot be directly used to cool the direct reduction pellets. One of the important technical points is that in order to improve the sealing performance of the oxidized pellet annular cooler, It is necessary to adopt an integral cooling silo and a sealed air box, but when this structure is working, the air box rotates with the cooling silo, and the original fixed air pipe cannot supply air to it.

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