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Granulation system for processing high-temperature molten slag

A liquid slag and granulation technology, which is applied in the field of high-temperature liquid slag treatment, achieves the effects of reducing construction land, reducing volume, and enhancing granulation effect

Active Publication Date: 2017-02-22
BEIJING TIANSU SUNLIGHT LOW CARBON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of granulation system for processing high-temperature liquid slag in view of the existing problems at present. It needs to consume a lot of water resources, and the H generated during the treatment process 2 S and SO x Harmful gases will not be discharged directly into the air

Method used

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  • Granulation system for processing high-temperature molten slag
  • Granulation system for processing high-temperature molten slag
  • Granulation system for processing high-temperature molten slag

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Embodiment 1

[0043] The present invention provides a granulation system for processing high-temperature liquid slag, which is arranged inside the boiler furnace 8, and the high-temperature liquid slag flow from the slag ditch 1 is introduced above, and the slag flow is discharged from the main combustion chamber . The small slag particles granulated by the present invention are finally discharged through the slag outlet 7 of the boiler, and the high-temperature slag small particles will be further recovered from waste heat, and the H produced in the slag flow granulation process 2 S and SO x Wait for the harmful gas to be discharged in the inside of the boiler furnace 8, and then be discharged after being processed through the flue. The structure of a granulation system for processing high-temperature liquid slag of the present invention is as follows Figure 1-Figure 3 As shown, it includes: a slag curtain forming device 2, a granulation device 3 and a granulation particle flow guiding ...

Embodiment 2

[0053] The difference between the second embodiment of the present invention and the first embodiment is that the granulation device 3 in the above-mentioned embodiment 1 is arranged below the overflow platform 21, while the granulation device 3 in the second embodiment of the present invention is arranged on the sleeve 22 below. The structure of this granulation device 3 of embodiment two is as follows Figure 4 As shown, it includes an annular cavity 31 and nozzles 32 , and the nozzles 32 are arranged in a circular array on the inner circle of the cavity 31 based on the center of the cavity 31 . This structure of the granulation device 3 can make the medium ejected from the nozzle 32 spray towards the center of the granulation device 3, so that the circular slag curtain flowing out of the flow guide channel 23 will be close to the center and go down to the center after being granulated. The slag outlet 7 of the boiler is discharged.

Embodiment 3

[0055] Embodiment 3 adds a liner on the basis of the above-mentioned embodiment 1 or embodiment 2, and the liner is attached to the overflow on the upper platform of the flow platform 21 , and the middle recess is attached to the inner side of the overflow tank 210 . The liner effectively protects the overflow platform 21. When it needs to be replaced, just lift the liner and replace it. Thereby effectively prolonging the service life of overflow platform 21 Life.

[0056] The above-mentioned embodiment is described by taking the overflow platform 21 including the upper cylinder 211, the lower cylinder 212 and the round platform 213 between them as an example, but the present invention is not limited thereto, and the structure of the overflow platform 21 can also be only It is a circular frustum structure, it can also be a columnar structure, and it can also be a structure of other shapes.

[0057] The sleeve 22 or the overflow platform 21 in the above embodiments may...

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Abstract

The invention provides a granulation system for processing high-temperature molten slag. The granulation system is arranged inside a boiler hearth (8) and comprises a slag curtain forming device (2) and a granulating device (3); the slag curtain forming device (2) comprises an overflowing platform (21) and a sleeve (22); the overflowing platform (21) can be accommodated in the sleeve (22); a flow guide passage (23) is kept between the sleeve (22) and the overflowing platform (21); the high-temperature molten slag flows out of the flow guide passage (23) to form a circular slag curtain; the upper end of the sleeve (22) is higher than that of the overflowing platform (21); the granulating device (3) comprises a chamber body (31) and a nozzle (32) which communicates with the chamber body (31); the nozzle (32) faces to the slag curtain flowing out of the flow guide passage (23); fluid ejected from the nozzle (32) is in a circular ring shape and is matched with the circular slag curtain flowing out of the flow guide passage (23). The granulation system provided by the invention has the advantages of preventing harmful gases from being exhausted to air directly, also guaranteeing the uniformity of granulated particles and enhancing the granulation effect.

Description

technical field [0001] The invention relates to the field of processing high-temperature liquid slag, in particular to a granulation system for processing high-temperature liquid slag. Background technique [0002] In the metallurgical industry, a large amount of high-temperature liquid slag is produced during the blast furnace ironmaking process. These high-temperature liquid slags need to be cooled and granulated so as to make full use of the sensible heat of the high-temperature liquid slags while producing high value-added products with building material properties. [0003] At present, water quenching method and dry granulation method are mainly used to deal with high temperature liquid slag. [0004] The water quenching method mainly includes the bottom filtration method, the Imba method, the Tula method, the Lhasa method, and the Mintek method. Using these methods to treat the slag requires a large amount of water, and a large amount of H will be generated during the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/06
CPCC21B3/06Y02W30/50
Inventor 徐可培刘汝江
Owner BEIJING TIANSU SUNLIGHT LOW CARBON TECH
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