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Metallurgical molten slag dry granulating and heat recovering system

A dry granulation and heat energy recovery technology, applied in the field of machinery and equipment, can solve the problems of energy consumption and unrecovered heat energy, and achieve the effect of avoiding waste, saving energy consumption and ensuring continuity.

Active Publication Date: 2011-03-30
CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] 4) A large amount of high-grade heat energy contained in the slag has not been recovered;
[0008] 5) The granulated slag needs to be dried again in the subsequent use, and it needs to consume a certain amount of energy

Method used

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  • Metallurgical molten slag dry granulating and heat recovering system
  • Metallurgical molten slag dry granulating and heat recovering system
  • Metallurgical molten slag dry granulating and heat recovering system

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] see Attachment

[0022] The metallurgical slag dry granulation and heat recovery system consists of a feeding system, a dry granulation device 3 and a heat recovery system. The slag feeding device 2 is composed. The metallurgical slag received by the slow storage tank 1 is transported to the slag feeding device 2 through the slag bag 15 and the guide rail elevator 14, and then falls into the dry granulation device 3 from the discharge port of the slag feeding device 2 On the centrifugal rotating disk 16 in the middle, the liquid slag is granulated into particles due to the centrifugal force and the pulse action of the airflow nozzle 17 under the centrifugal rotating disk 16 during the process of being thrown out by the centrifugal rotating disk 16, and is forced to cool at the same time, and the granular The molten slag hits the water wall 19 of the ...

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Abstract

The invention relates to a metallurgical molten slag dry granulating and heat recovering system and belongs to mechanical equipment. The metallurgical molten slag dry granulating and heat recovering system consists of a feeding system, a dry granulating device and a heat recovering system. Liquid molten slag is subjected to dry granulation in a way of centrifugal rotation and air flow pulse; and the molten slag is cooled and solidified after exchanging heat with a water cooled wall and fluidization gas. In the whole granulating process, water is not consumed or only a small amount of water is consumed, and a large quantity of waste water and harmful gases such as H2S and SOx and the like are not generated; sensible heat in the molten slag is fully recycled while the granulated slag with high vitrification rate is formed; waste of high-grade heat is effectively avoided; and energy consumption of metallurgical enterprises is saved. The granulated slag is subsequently used without being additionally dried; and the energy consumption in a subsequent using process is saved.

Description

technical field [0001] The invention relates to a dry granulation and heat recovery system for metallurgical slag, which belongs to the category of mechanical equipment. Background technique [0002] During the iron and steel smelting process, a large amount of high-temperature slag will be produced, and the temperature of the slag is 1450-1600 °C. Due to the large output of metallurgical slag, if it is not used well, it will not only waste secondary resources, but also cause serious pollution to the environment. The comprehensive utilization of metallurgical slag is being studied at home and abroad. The safe, scientific and efficient treatment of metallurgical slag is of great significance to the energy saving and emission reduction of metallurgical enterprises. [0003] The traditional slag treatment method is the water quenching method. The slag is quenched by spraying water to form vitrified slag. The solidified slag particles are separated from the slag washing water a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/06C21B3/08
CPCC21B2400/026C21B2400/052C21B2400/054C21B2400/076C21B2400/08Y02W30/50
Inventor 李先旺朱文渊孙阳
Owner CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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