High-temperature slag and waste heat recovery treatment device thereof

A heat recovery device and recovery treatment technology, which is applied in the field of waste heat utilization in iron and steel smelting, can solve problems such as failure to recycle, heat waste of slag, etc., achieve good heating effect, increase waste heat utilization rate, and slow down heat loss.

Active Publication Date: 2020-08-11
NANJING HUADIAN ENERGY SAVING & ENVIRONMENTAL PROTECTION EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a recovery treatment device for high temperature

Method used

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  • High-temperature slag and waste heat recovery treatment device thereof
  • High-temperature slag and waste heat recovery treatment device thereof
  • High-temperature slag and waste heat recovery treatment device thereof

Examples

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Embodiment 1

[0047] see Figure 1-6 As shown, this embodiment is a working principle and working process of a high-temperature slag and waste heat recovery treatment device:

[0048] For a high-temperature slag and waste heat recovery and processing device in the present invention, after the high-temperature slag is produced by circuit or converter smelting, in order to avoid heat waste, we send the slag into the material transfer box 101, and use the slag The high-temperature air directly emitted is passed into the smelting equipment again; at the same time, the high-temperature air also rapidly heats the water in the steam generating box 104 to generate water vapor, which is used in boiler rooms or other equipment; into the slag processing device 2, through the remaining heat, heat the cold fluid that needs to be exchanged in the tube heat pipe group; after the heat exchange is completed, it is cooled with the cooling liquid to become the final waste;

[0049] During the working process...

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Abstract

The invention discloses high-temperature slag and a waste heat recovery treatment device thereof, and relates to the technical field of steel smelting waste heat utilization. The high-temperature slagand the waste heat recovery treatment device thereof comprise a heat recovery device and a slag treatment device which are connected with each other. According to the high-temperature slag and the waste heat recovery treatment device thereof, the heat recovery device and the slag treatment device are arranged and connected with each other, so that the waste heat utilization rate of the high-temperature slag is improved, and the heat loss of the slag in the conveying process is reduced; a material conveying box is arranged in the heat recovery device, so that an approximately closed space is formed, the slag is continuously subjected to heat preservation in the conveying process, and the loss of the heat of the slag is slowed down; a spreading plate is arranged on the surface of a feedingpipe, the slag entering the material conveying box is spread and flattened, the distribution of the slag in the material conveying box is accelerated, and the heating effect of the waste heat of the slag is better; and a steam generation box is arranged in the heat recovery device, and a heat exchange pipe set is arranged in the slag treatment device, so that the waste heat of the slag can be fully utilized.

Description

technical field [0001] The invention belongs to the technical field of waste heat utilization in iron and steel smelting, and in particular relates to a recovery treatment device for high-temperature slag and waste heat. Background technique [0002] Slag refers to the glassy non-metallic substance coated on the surface of molten metal after iron ore is smelted. The converter steelmaking process is carried out in a molten reaction medium, and the slag is the product of the fire steelmaking process. A melt mainly composed of oxides in metallurgical raw materials or oxides generated during metallurgical processes. [0003] Slag is mainly composed of oxides, such as CaO, FeO, MnO, MgO, Al2O3, SiO2, P2O5, Fe2O3, etc. In addition to oxides, slag may also contain a small amount of other types of compounds or even metals, such as fluoride (CaF2) , chloride (NaCl), sulfide (CaS, MnS), sulfate, etc. [0004] After the iron and steel smelting is completed, because the smelting temp...

Claims

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Application Information

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IPC IPC(8): C21B3/08F27D17/00F22B1/04F28D1/047
CPCC21B3/08F27D17/004F22B1/04F28D1/0472F27D2017/006Y02P10/20Y02P10/25
Inventor 陆建宁朱华萍郑璇王圣冬杨桂兰
Owner NANJING HUADIAN ENERGY SAVING & ENVIRONMENTAL PROTECTION EQUIP
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