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Method and system for mechanical granulation of metallurgy slag and waste heat recovery

A waste heat recovery system and waste heat recovery technology, applied in the field of metallurgy, can solve the problems of no steel slag waste heat recovery system, no energy saving and environmental protection, low granulation efficiency, etc., and achieve the effects of saving manpower, energy and reducing labor intensity

Inactive Publication Date: 2012-01-11
唐山铭之泽暖通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although some steel companies mention steel slag granulation treatment, most of them are not perfect, the granulation efficiency is low, and there is no waste heat recovery system for steel slag, so there is no real energy saving and environmental protection

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  • Method and system for mechanical granulation of metallurgy slag and waste heat recovery
  • Method and system for mechanical granulation of metallurgy slag and waste heat recovery
  • Method and system for mechanical granulation of metallurgy slag and waste heat recovery

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Embodiment Construction

[0042] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0043] The main idea of ​​the technical solution of the present invention is that the metallurgical slag enters the slag flowing slag trough into the mechanical granulation device with serial flow water cooling, and the slag is mechanically granulated while being sprayed and cooled by the spray water cooling device in the water-cooled mechanical granulation device. Then fall into the water-cooled slag collection tank, fully cool in the water-cooled slag collection tank to release heat, and then take the granulated and cooled granulated slag out of the water-cooled slag collection tank through the feeder and lifting dehydration device, and fully dehydrate during the lifting process , and then enter the intermediate storage bin through the discharge chute or store directly on the ground, realizing the ...

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Abstract

The invention discloses a method and a system for mechanical granulation of metallurgy slag and waste heat recovery. The method comprises the following steps: 1, allowing the metallurgy slag in a slag tank to go through a slag spout and enter a water-cooling mechanical granulation apparatus; 2, carrying out mechanical granulation on the metallurgy slag with the water-cooling mechanical granulation apparatus to form granulated slag; 3, spray cooling the granulated slag to allow the granulated slag to fall into a water-cooling slag collection pool; 4, cooling the granulated slag in the water-cooling slag collection pool to release heat, and recovering the heat; 5, taking the cooled granulated slag from the water-cooling slag collection pool with a feeder and a lifting dehydration apparatus and dehydrating the granulated slag in the lifting process; and 6, storing the granulated slag. By adopting a technical scheme of the present invention, the recovery of steam heat is realized, the steam discharge is reduced, the water consumption for granulation is reduced, the water consumption of each ton of the slag for slag processing is reduced, and the water source is saved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method and system for mechanical granulation of metallurgical slag and waste heat recovery. Background technique [0002] Steel is the structural material with the largest amount of human consumption and the functional material with the highest output. The steel industry is the main pillar industry in my country. In 2010, the output of crude steel in my country has exceeded 600 million tons. With the rapid growth of steel production, resources, energy and environmental pollution It has become a limiting condition restricting the sustainable development of my country's iron and steel industry. A large amount of high-temperature metallurgical slag is produced in blast furnace, converter and electric furnace smelting projects. Consumption and pollutant emissions are of great significance. [0003] Taking steel slag as an example, the steel slag treatment system of most steelmaki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/08
CPCC21B2400/024C21B2400/052C21B2400/056C21B2400/062C21B2400/074C21B2400/08Y02P10/20
Inventor 郭荣芝王文祥
Owner 唐山铭之泽暖通科技有限公司
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