Blast furnace slag granulation and waste heat recovery device

A waste heat recovery device and blast furnace slag technology, which is applied in the field of ironmaking, can solve the problems of waste of high-quality waste heat resources, unrecoverable heat, and pollution of the surrounding environment, and achieve the effects of saving consumption, fully and effectively recycling, and reducing pollution

Active Publication Date: 2013-01-23
潼关中金冶炼有限责任公司
View PDF5 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, water quenching is generally used to granulate and cool high-temperature liquid blast furnace slag, which consumes a lot of water, pollutes the surrounding environment, heat cannot be recovered, and a large amount of high-quality waste heat resources are wasted

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Blast furnace slag granulation and waste heat recovery device
  • Blast furnace slag granulation and waste heat recovery device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0010] As shown in the figure, the present invention is mainly composed of a slag chute (1), a liquid slag bucket (2), a quick cooling cavity (3), a star-shaped slag discharge wheel (9), and an air-cooled cavity (10). The slag chute (1) is located at the top of the device, and its inlet is slightly higher and connected to the slag ditch of the blast furnace tapping site, and the outlet is slightly lower than the liquid slag hopper (2); the lower part of the liquid slag hopper (2) is connected to the quick cooling cavity (3) ), the slag chute (1) and the liquid slag bucket (2) are made of refractory materials; the lower part of the quick cooling chamber (3) is equipped with a star-shaped slag wheel (9) and connected to the air-cooled chamber (10) at the bottom ). It is characterized in that the quick cooling chamber (3) is composed of an upper part of the granul...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a blast furnace slag granulation and waste heat recovery device which mainly comprises a slag sliding port (1), a liquid slag bucket (2), a quick cooling cavity (3), a star-shaped slag dumping wheel (9) and an air cooling cavity (10), wherein the quick cooling cavity (3) is further divided into an upper granulation wheel set part and a lower water quenching part; and the quick cooling cavity (3) is connected with the air cooling cavity (10) through the star-shaped slag dumping wheel (9). The invention has the following advantages: water resources can be greatly saved, pollution to the surrounding environment can be reduced, most or even all of cooling water can be changed into steam for use, and steam condensate can be further recovered and used; and meanwhile, the waste heat of heat circulating air obtained through air cooling can be recovered by a waste heat boiler. Mechanical crushing and water quenching processes are further used, thereby ensuring the quality of slag granules. The blast furnace slag granulation and waste heat recovery device is simple in structure and reasonable in design and can ensure that the liquid blast furnace slag is effectively granulated, thereby ensuring that the heat of the liquid blast furnace slag can be sufficiently and effectively recovered.

Description

Technical field [0001] The invention belongs to iron and steel metallurgy technology, relates to the technical field of ironmaking, and particularly relates to a blast furnace slag granulation and waste heat recovery device. Background technique [0002] As one of my country's pillar industries, the steel industry is both a major energy consumer and a major pollutant emitter. Doing a good job of energy conservation and emission reduction is the most important prerequisite and condition for ensuring the sustainable development of my country's steel industry. Blast furnace slag is a very valuable secondary resource and secondary energy. The average output of blast furnace slag per ton of pig iron produced by the blast furnace is about 400 kg. The temperature of the liquid blast furnace slag produced in the ironmaking process is above 1400 ℃. The calorific value of a ton of slag is approximately equivalent to that of 60kg standard coal. At present, water quenching is commonly used ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/06C21B3/08F27D17/00
CPCC21B2400/024C21B2400/026C21B2400/052C21B2400/056C21B2400/08Y02P10/20Y02W30/50
Inventor 许征鹏邱润强
Owner 潼关中金冶炼有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap