Method and device for granulation of molten slag

The high-speed gas-water mist and vortex flow method for granulating molten slag enhances heat recovery and steam generation, overcoming inefficiencies in traditional methods by improving thermal conductivity and reducing water usage.

RU2865367C2Active Publication Date: 2026-07-01БАОШАНЬ АЙРОН & СТИЛ КО ЛТД
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Patent Information

Application Number
RU2025116309
Authority / Receiving Office
RU · RU
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-12-13
Filing Date
2023-12-13
Publication Date
2026-07-01
Estimated Expiration
2043-12-13

AI Technical Summary

Technical Problem

Current methods for granulating molten blast furnace slag, such as water cooling and existing granulation technologies, are inefficient in recovering waste heat due to low thermal conductivity and high water consumption, leading to environmental pollution and limited energy recovery.

Method used

A method and apparatus utilizing a high-speed gas-water mist to granulate molten slag, followed by a vortex flow for rapid cooling and a cyclone separator for heat exchange, combined with steam generation and waste heat recovery systems to enhance heat transfer efficiency and reduce water usage.

Benefits of technology

Improves heat recovery efficiency, reduces water consumption, and effectively converts waste heat into usable steam, addressing the inefficiencies of traditional methods.

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Abstract

FIELD: metallurgy.SUBSTANCE: group of inventions relates to a method and device for granulating molten slag. According to the method, molten slag is crushed to obtain molten slag granules, then the molten slag granules are cooled and the resulting granulated slag is collected. A device for granulating molten slag is also provided for implementing a method for granulating molten slag, comprising a granulation mechanism for granulating molten slag to obtain crushed granules of molten slag and a cooling mechanism designed to cool the granules of molten slag to obtain granulated slag.EFFECT: safely granulating molten blast furnace slag and selectively extracting and utilizing the heat generated during the granulation process for immediate or subsequent use.9 cl, 27 dwg
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Citation Information

Patent Citations

  • Device and method for granulating blast furnace slag and recycling waste heat

    CN113322360A

  • Plant for granulation of molten slag

    RU2099297C1

  • Method for continuous production of cured steel slude and related device

    RU2743393C1

  • Method and apparatus for granulating metallurgical slag

    SU1014893A1

  • Apparatus for granulating metallurgical slag

    SU1043122A2