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Method for recovery of waste heat of steel slag and comprehensively processing and utilizing steel slag

A technology of waste heat recovery and comprehensive processing, applied in the field of steel slag treatment, to avoid water explosion, solve environmental pollution problems, and prevent quality decline

Inactive Publication Date: 2009-04-22
SHOUGANG CORPORATION
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Problems solved by technology

[0009] The purpose of the present invention is to provide a method for steel slag waste heat recovery and comprehensive processing and utilization of steel slag, which solves the defects in the existing steel slag treatment technology in the aspects of steel slag waste heat recovery, steel slag rapid stabilization treatment, steel slag tailings deep processing and utilization, etc., and can realize Steel slag waste heat recovery, steel slag rapid stabilization treatment, and on this basis to realize the deep processing and utilization of steel slag tailings

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  • Method for recovery of waste heat of steel slag and comprehensively processing and utilizing steel slag

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Embodiment Construction

[0029] The invention relates to a treatment method for steel slag waste heat recovery and comprehensive processing and utilization of steel slag, which realizes the combination of steps figure 1 Described as follows:

[0030] (1) Hot steel slag enters the steel slag receiving system while performing preliminary granulation through the discharging system during the discharging process;

[0031] (2) The hot steel slag passes through the flow rate control system to realize the quantitative feeding of the subsequent process, and realizes the secondary granulation of the hot steel slag in the system;

[0032] (3) After preliminary cooling and granulation, the hot steel slag enters the steel slag waste heat recovery system. Since the surface of the hot steel slag is continuously renewed in this system, the heat in the steel slag is completely and evenly released, and the steel slag waste heat is recovered in the form of hot air and steam. , and at the same time realize the granulat...

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Abstract

The invention provides a mehtod for recovering waste heat of steel slag and comprehensively processing and using the steel slag, and belongs to the technical field of steel slag treatment. The method comprises the following steps: a thermal state steel slag material discharging system discharges steel slag into a thermal state steel slag material receiving system for primary crushing; the crushed steel slag is subjected to secondary crushing by a thermal state steel slag velocity control system and quantificationally fed into a thermal state steel slag cooling granulating system for re-crushing and cooling, high-temperaure hot air generatd in the cooling process is collected by a thermal state steel slag waste heat recovery system and enters a heat exchange system to form vapor for power generation or heat supply; the cooled steel slag enters a steel slag stabilizing treatment system, and the steel slag after the stabilizing treatment is treated by a steel slag separation system to obtain steel slag tailing micropowder and metal slag steel respectively; and, the steel slag micropowder is mixed with other materials and used to prepare concrete products by a steel slag concrete product processing preparation system. The method has the advantages of adaptability to various types of steel slag to be processed, good operational environment and no secondary pollution.

Description

technical field [0001] The invention belongs to the technical field of steel slag treatment, and in particular provides a method for steel slag waste heat recovery and steel slag comprehensive processing and utilization. In the process of hot steel slag treatment, it can realize the recovery and utilization of sensible heat of steel slag, the rapid stabilization treatment of free calcium oxide (magnesium oxide) in steel slag, the separation and recovery of metal, and the comprehensive utilization of deep processing of steel slag tailings. It is suitable for heat recovery and metal recovery of hot steel slag with various degrees of fluidity produced in the steelmaking process of the iron and steel metallurgical industry, and at the same time can realize the stabilization of steel slag and the deep processing and utilization of tailing slag. Background technique [0002] The recovery and efficient conversion of waste heat resources in iron and steel enterprises have always bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/06C04B5/00F27D17/00
CPCY02P10/25Y02W30/50
Inventor 廖洪强冯向鹏余广炜时朝昆唐卫军王金花赛音巴特尔冯仕章李世青
Owner SHOUGANG CORPORATION
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