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Method and device for recovering sensible heat of blast furnace slag

A technology for sensible heat recovery and blast furnace slag, which is applied in the direction of recycling technology, plastic recycling, and process efficiency improvement, can solve the problems of large water consumption and low sensible heat recovery rate, and achieves avoiding waste, simple device structure and high efficiency. Effect of sensible heat recovery rate of blast furnace slag

Inactive Publication Date: 2012-08-22
重庆飞耀电炉有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to solve the problems of large water consumption and low recovery rate of sensible heat in the existing blast furnace slag treatment method, and provide a method that does not need to consume water resources and has a higher recovery rate of sensible heat. A method for recycling sensible heat of blast furnace slag; in addition, the present invention also provides a device for recycling sensible heat of blast furnace slag to realize the aforementioned method

Method used

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  • Method and device for recovering sensible heat of blast furnace slag
  • Method and device for recovering sensible heat of blast furnace slag
  • Method and device for recovering sensible heat of blast furnace slag

Examples

Experimental program
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Embodiment 1

[0040] In order to implement the above method for recycling sensible heat of blast furnace slag, this embodiment adopts a device for recycling sensible heat of blast furnace slag. The structure of the device is as follows: image 3 As shown, it includes a pyrolysis furnace 1, a dry granulation device 2, a powder container 3 and a gas collection container 4; the discharge port of the dry granulation device 1 is connected to the lower part of the pyrolysis furnace 1 through a blast furnace slag channel 5; the powder The container 4 is used to store the printed circuit board substrate powder, and its bottom is provided with an openable powder outlet, and the powder outlet is connected to the upper part or top of the pyrolysis furnace 1 through the powder channel 6; the top of the pyrolysis furnace 1 is also provided with a The air flow passage 7 of the gas collection container 4, the air flow passage 7 is provided with a first heat exchanger 8; the bottom of the pyrolysis furnace ...

Embodiment 2

[0048] Using the blast furnace slag sensible heat recycling device described in Example 1 and the operation process of blast furnace slag sensible heat recycling, this embodiment has carried out four groups of blast furnace slag sensible heat recovery experiments in addition to study the main factors that have an impact on the method of the present invention. factor. In these four groups of blast furnace slag sensible heat recovery experiments, the control temperature T of the blast furnace slag particles sent out by the dry granulation device 渣0 , The mass of blast furnace slag particles added to the pyrolysis furnace M 高炉渣 and PCB substrate powder M PCB The control amount of the parameters is different, and the gas product mass M 气 and blast furnace slag sensible heat recovery δ to reflect the impact of parameter control changes. The parameter control quantities and experimental calculation results of the four groups of blast furnace slag sensible heat recovery experiment...

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Abstract

The invention provides a method for recovering sensible heat of blast furnace slag and a device for realizing the method. In the method for recovering sensible heat of blast furnace slag, sensible heat of blast furnace slag is recovered as chemical energy for pyrolytic reaction of a printed circuit board substrate, thereby avoiding wasting water resources; and thus, the invention has the advantage of high recovery rate of sensible heat of blast furnace slag, solves the problems of high consumption of water and low recovery rate of sensible heat in the existing water quenching treatment process for blast furnace slag, avoids the problem of secondary energy consumption in the pyrolytic treatment of the printed circuit board substrate, can be used for industrial treatment of printed circuit board substrate materials in electronic waste, and is beneficial to realizing energy saving and emission reduction. In addition, the obtained gas products and solid residues can be further utilized, and thus, the product utilization ratio is high. The device for recovering sensible heat of blast furnace slag comprises a pyrolyzing furnace, a dry-type granulating device, a powder container and a gas collection container. The device for recovering sensible heat of blast furnace slag has the advantage of simple structure, is easy to operate and is suitable for industrial application.

Description

technical field [0001] The invention relates to the technical fields of metallurgical engineering and energy recovery, in particular to a method for recovering and utilizing sensible heat of blast furnace slag, and a device for realizing the method. Background technique [0002] The metallurgical industry is an industry with high energy consumption and high emissions. Blast furnace slag is the main by-product of blast furnace ironmaking, with a temperature as high as 1400-1550°C, containing a large amount of sensible heat, and is a good secondary resource. However, due to the lack of efficient and reliable dry-type sensible heat recovery technology, my country currently mainly adopts the traditional water quenching process for the blast furnace slag produced in the blast furnace ironmaking process, resulting in a large loss of sensible heat contained in the blast furnace slag and low recovery efficiency. Taking 2009 as an example, the output of blast furnace pig iron in my ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/12C21B3/04
CPCY02P10/20Y02P20/10Y02W30/50Y02W30/62
Inventor 吕学伟秦跃林邱贵宝白晨光扈玫珑
Owner 重庆飞耀电炉有限公司
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