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Pelletizing system for processing high-temperature liquid-state slag

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

Active Publication Date: 2017-02-08
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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  • Pelletizing system for processing high-temperature liquid-state slag
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  • Pelletizing system for processing high-temperature liquid-state slag

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Embodiment 1

[0045] 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

[0056] The difference between the second embodiment of the present invention and the first embodiment is that the granulation device 3 of the above-mentioned embodiment 1 is arranged below the overflow platform 21, while the granulation device 3 of the second embodiment of the present invention is the same as that of the second embodiment. The layout of the granulation device 3 is as Figure 4 As shown, there are two granulation devices 3, which are respectively arranged under the left side outer wall 22 and the right side outer wall 22; each granulation device 3 includes a rectangular cavity 31 and a plurality of nozzles 32 in cross section, and the plurality of nozzles 3 are arranged in a striped array on the side of the cavity 31 close to the slag curtain flowing out of the guide channel 23 . This arrangement of the granulation device 3 can make the medium ejected from the nozzle 32 spray towards the center of the boiler, so that the strip-shaped slag curtain flowing out of...

Embodiment 3

[0058] The structure of embodiment three is as Figure 5 As shown, it adds a liner 5 on the basis of the above-mentioned embodiment 1 or embodiment 2, the liner 5 is attached to the upper platform of the overflow platform 21, and the middle concave is attached to the overflow platform 21. Inside the groove 210. The lining plate 5 effectively protects the overflow platform 21, and when it needs to be replaced, it is only necessary to lift the lining plate 5 and replace it. Thus, the service life of the overflow platform 21 is effectively extended.

[0059] The above-mentioned embodiment is illustrated by taking the overflow platform 21 including the upper platform 211, the lower platform 212 and the middle platform 213 in the middle of the two as an example, but the present invention is not limited thereto, and the cross-sectional structure of the overflow platform 21 also It can be only a trapezoidal structure, or only a rectangular columnar structure, or a combination of a ...

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Abstract

The invention provides a pelletizing system for processing high-temperature liquid-state slag. The pelletizing system is arranged in a boiler furnace (8) and comprises a slag curtain forming device (2) and a pelletizing device (3). The slag curtain forming device (2) comprises an overflowing platform (21) and an outer wall (22). A flow guide passage (23) is reserved between the overflowing platform (21) and the outer wall (22). High-temperature liquid-state slag flows out of the flow guide passage (23) to form a strip-shaped slag curtain. The upper end of the outer wall (22) is higher than the upper end of the overflowing platform (21). The pelletizing device (3) comprises a cavity (31) and nozzles (32) communicating with the cavity (31). The nozzles (32) right face the slag curtain flowing out of the flow guide passage (23). Fluid sprayed out of the nozzles (32) is in a strip shape and is matched with the strip-shaped slag curtain flowing out of the flow guide passage (23). The pelletizing system can prevent harmful gas from being discharged into the air directly and guarantee the uniformity of pelletized particles, and the pelletizing effect is enhanced.

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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IPC IPC(8): C21B3/06
CPCC21B3/06Y02W30/50
Inventor 徐可培杨庆辉杨潇潇
Owner BEIJING TIANSU SUNLIGHT LOW CARBON TECH
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