Granulating chamber of granulating device

Abstract

The invention discloses a granulating chamber of a granulating device. The granulating chamber comprises a water-cooling top plate, an upper cone, an inner cone, a middle ring section and a lower cone, the upper cone is in an annular frustum shape, the inner cone is conical, the upper cone and the inner cone are coaxially arranged at intervals up and down, the lower cone surrounds the outer side of the inner cone, and a discharging opening for discharging granulated slag is connected between the lower cone and the inner cone. The middle ring section is arranged between the lower cone and the upper cone, an annular space for slag granulating is formed among the upper cone, the inner cone, the lower cone and the middle ring section, the water-cooling top plate is in closed connection with the top end of the upper cone, an opening for slag to enter the granulating chamber is formed in the center of the water-cooling top plate, and a granulating disc extends upwards from the top of the inner cone. The top end of the granulating disc is provided with a disc surface used for bearing the slag, the granulating disc is driven by a driving mechanism to rotate, and the middle ring section is provided with a first blower nozzle used for feeding first cooling air into the granulating chamber. According to the granulating chamber of the granulating device, the slag adhesion phenomenon of the upper cone manufactured by welding during dry granulating can be avoided.

Description

technical field [0001] The invention relates to the technical field of smelting slag treatment, in particular to a granulation chamber of a granulation device. Background technique [0002] In the production process of the iron and steel industry, a large amount of waste heat and waste energy are generated, and most of the waste heat and waste energy have been well utilized, but the sensible heat and low-temperature waste heat resources of high-temperature liquid slag have not been well recycled so far. High-temperature liquid slag is a by-product of the iron and steel production process, and its discharge temperature is as high as 1500°C, containing a large amount of high-temperature waste heat. [0003] One of the current waste heat recovery methods is to use dry granulation, such as figure 1 As shown, using the high-speed rotating turntable 1 in the granulation chamber 2, the high-temperature liquid slag flowing in from the top of the turntable is spread out from the cen...

AI Technical Summary

Problems solved by technology

[0004] However, most of the top of the current granulation chamber is installed by welding, the welding workload is heavy, and it cannot be disassembled after welding

Moreover, due to changes in the structure and material properties of the weld, the cooling at the weld may be different from other locations, which may cause insufficient cooling at the weld, and the roughness of the weld is relatively large and not smooth enough. It will make the slag that collides with it stick together and cannot be effectively granulated

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