Dry-process slag granulation system

Abstract

The invention discloses a dry-process slag granulation system which adopts a dry-type treatment method for slag so as to save a large amount of water resources. The dry-process slag granulation systemperforms heat recovery on the high-temperature slag and performs centrifugal granulation on the high-temperature slag in a molten state; heat is released; preliminary cooling is performed in a water-cooled wall manner, and at the same time, a slag mixing tank performs cold slag and hot slag mixing on the high-temperature slag to prevent adhesion of the hot slag; then heat exchange fins around a tank body of a drum heat exchanger are used for heat exchange and a heat transfer medium is used for heat recovery; the absorbed heat is conveyed to a secondary energy utilization device; and fine slaggenerated after the slag is mechanically ground and crushed is sent back to a granulation tank through a stranding cage and waste heat recovery is performed in the meantime. The dry-process slag granulation system effectively improves the heat recovery efficiency by recovering the heat in stages.

Description

technical field [0001] The invention relates to a slag processing system, in particular to a dry slag granulation system. Background technique [0002] The iron and steel metallurgical industry will produce a large amount of high-temperature slag during the production process, but the above-mentioned secondary industrial products have not been fully and rationally utilized in the current production process. The usual treatment method is mainly "wet" treatment, that is, using water cooling Cooling and granulating the high temperature slag directly, this treatment process does not make full use of the heat of the high temperature slag itself, but this part of the heat energy is considerable, that is, a lot of heat energy resources are wasted, and the "wet" treatment needs to use a lot of energy. Water resources have also caused a waste of water resources. In the context of energy conservation and emission reduction, the existing production process obviously needs to be better ...

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Problems solved by technology

[0002] The iron and steel metallurgical industry will produce a large amount of high-temperature slag during the production process, but the above-mentioned secondary industrial products have not been fully and rationally utilized in the current production process. The usual treatment method is mainly "wet" treatment, that is, using water cooling Cooling and granulating the high temperature slag directly, this treatment process does not make full use of the heat of the high temperature slag itself, but this part of the heat energy is considerable, that is, a lot of heat energy resources are wasted, and the "wet" treatment needs to use a lot of energy. Water resources have caused a waste of water resources. In the context of energy conservation and emission reduction, the existing production process obviously needs to be better optimized and upgraded

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