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Recovery device for waste heat of molten slag

A waste heat recovery device and a technology for molten slag, applied in the field of waste heat recovery in the metallurgical industry, can solve the problems of high energy consumption, affecting use, and low recovery efficiency.

Active Publication Date: 2020-11-27
BERIS ENG & RES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As mentioned above, the technical equipment of the rotary cup method is complicated, and the slag particles are easy to bond with the water wall during the centrifugal granulation process, the recovery efficiency is low, the energy consumption is high, and the application effect is poor
[0005] The drum method and the pot-type thermal stewing method recover steam through direct contact between slag and water. The recovered steam has a low pressure temperature and high ion content, which affects subsequent use.

Method used

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  • Recovery device for waste heat of molten slag
  • Recovery device for waste heat of molten slag
  • Recovery device for waste heat of molten slag

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the molten slag waste heat recovery device according to Example 1 of the present invention includes: a wind quenching chamber 3, a vibrating conveyor 9, a tailing slag bin 10, a waste heat boiler 5 and a booster fan 8, forming a circulation loop. After the high-temperature molten slag is granulated in the air quenching chamber 3, it passes through the vibrating conveyor 9 and finally enters the tailings bin 10; the air passes through the booster fan 8, the tailings bin 10, the vibrating conveyor 9, the air quenching chamber 3, Waste heat boiler 5, in this process, the air and high temperature molten slag run in reverse to exchange heat and become high temperature air, which enters the waste heat boiler to recover waste heat.

[0031] The entrance of the vibrating conveyor 9 is connected to the funnel at the bottom of the wind quenching chamber 3 , and the heat exchange between the air and the high-temperature molten slag is mainly carried out ...

Embodiment 2

[0039] Such as figure 2 As shown, it is the molten slag waste heat recovery device of embodiment 2 of the present invention, which is different from embodiment 1 in that:

[0040] Also includes equipment for collecting and disposing of fumes. In the process of molten slag transportation and heat exchange treatment, flue gas mixed with dust will inevitably be generated. If it is not treated, it will not only cause serious air pollution, but also cause harm to the health of construction workers. Therefore, it is necessary to Set up fume disposal equipment.

[0041] Specifically, the molten slag waste heat recovery device of this embodiment also includes a first collection hood 12 , a second collection hood 13 , a dust collector 14 , a dust removal fan 15 and a chimney 16 .

[0042] The first collecting cover 12 is arranged above the slag liquid buffer tank 1 , and the second collecting cover 13 is arranged above the vibrating feeder 11 for collecting fumes generated during mo...

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Abstract

The invention provides a recovery device for waste heat of molten slag. The recovery device comprises an air quenching chamber, a vibrating conveyor, a tail slag bin, a waste heat boiler and a boosterfan; after being granulated in the air quenching chamber, the molten slag enters the tail slag bin through the vibrating conveyor; air passes through the booster fan, the tail slag bin, the vibratingconveyor, the air quenching chamber and waste heat boiler in sequence; in the process, the air and the molten slag run in reverse to exchange heat, and the waste heat of the molten slag is recovered.The device of the invention can effectively recover sensible heat of molten metallurgical slag, and meanwhile can obtain high-quality metallurgical slag refined particles. The whole device is operated under negative pressure, so that the efficiency is higher, and the environmental protection property is better.

Description

technical field [0001] The invention relates to the technical field of waste heat recovery in the metallurgical industry, in particular to a molten slag waste heat recovery device. Background technique [0002] At present, in the field of waste heat recovery of pyrometallurgical slag, a large amount of high-temperature slag will be produced in the production of pyrometallurgy field, and most of them are still treated by water quenching or thermal braising. The disadvantage is that the sensible heat of slag cannot be recycled. . With the transformation of my country's economic development model from resource-consuming to environment-friendly, the effective treatment and utilization of these solid wastes is an important research topic for metallurgists. The slagging temperature of pyrometallurgy is around 1600°C. Each ton of slag contains about 2000×10 3 Sensible heat in kJ. The sensible heat recovery of metallurgical slag can reduce energy consumption and reduce environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/06C21B3/08F27D17/00
CPCC21B3/06C21B3/08F27D17/004F27D17/001F27D17/008C21B2400/08C21B2400/026C21B2400/06C21B2400/062F27D2017/006Y02W30/50Y02P10/25
Inventor 况增光樊君冀中年石红勇李志伟夏腾成刘静郁建宁
Owner BERIS ENG & RES CORP