Blast furnace dry slag crushing method and blast furnace slag treatment method

A blast furnace dry slag and crushing method technology, applied in the field of metallurgy, can solve the problems of unstable product quality, can not be used as raw materials for sand making, slag activity and texture can not meet the requirements of national standards, etc., to achieve the effect of stable quality

Inactive Publication Date: 2018-11-20
成渝钒钛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of metallurgical technology, blast furnace slag has been solidified after water cooling, and then poured out and naturally cooled to obtain slag with a larger particle size. However, the activity and texture of the slag cannot meet the requirements of the national standard and cannot be used as The raw materials for sand making, or the products of sand making cannot meet the process requirements
[0003] There is no special equipment for blast furnace slag cooling in the existing equipment, and there are often problems that the crushing index and glass content after cooling cannot meet the requirements, or the quality of the product is unstable

Method used

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  • Blast furnace dry slag crushing method and blast furnace slag treatment method
  • Blast furnace dry slag crushing method and blast furnace slag treatment method
  • Blast furnace dry slag crushing method and blast furnace slag treatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0072] This embodiment provides a blast furnace dry slag crushing method, which includes the following steps:

[0073] Firstly, lay blast furnace dry slag gravel in the dry slag pool with a laying thickness of 0.45m; the particle size of the blast furnace dry slag gravel laid in the dry slag pool is about 30mm, and make the surface of the blast furnace dry slag gravel lay flat .

[0074] Secondly, the liquid blast furnace slag in the first blast furnace is put into the dry slag pool through the slag outlet, and a liquid slag layer is formed on the surface of the dry slag gravel; after the liquid slag layer is naturally cooled for 12 minutes, the slag surface is water-cooled for the first time Cool down, and then cool naturally for 35 minutes after spraying water to evaporate the accumulated water on the surface of the slag layer. Among them, the water spraying time of the first water cooling cooling process is 18 minutes, and the water spraying volume is 50m 3 .

[0075]The...

Embodiment 2

[0078] This embodiment provides a blast furnace dry slag crushing method, which includes the following steps:

[0079] Firstly, lay blast furnace dry slag gravel in the dry slag pool with a laying thickness of 0.55m; the particle size of the blast furnace dry slag gravel laid in the dry slag pool is about 32mm, and make the surface of the blast furnace dry slag gravel lay flat .

[0080] Secondly, the liquid blast furnace slag in the first blast furnace is put into the dry slag pool through the slag outlet, and a liquid slag layer is formed on the surface of the dry slag gravel; after the liquid slag layer is naturally cooled for 17 minutes, the slag surface is water-cooled for the first time Cool down, and then cool naturally for 45 minutes after spraying water to evaporate the accumulated water on the surface of the slag layer. Among them, the water spraying time of the first water cooling cooling process is 22 minutes, and the water spraying volume is 60m 3 .

[0081] Th...

Embodiment 3

[0084] This embodiment provides a blast furnace dry slag crushing method, which includes the following steps:

[0085] Firstly, lay blast furnace dry slag gravel in the dry slag pool with a laying thickness of 0.55m; the particle size of the blast furnace dry slag gravel laid in the dry slag pool is about 32mm, and make the surface of the blast furnace dry slag gravel lay flat .

[0086] Secondly, the liquid blast furnace slag in the first blast furnace is put into the dry slag pool through the slag outlet, and a liquid slag layer is formed on the surface of the dry slag gravel; after the liquid slag layer is naturally cooled for 17 minutes, the slag surface is water-cooled for the first time Cool down, and then cool naturally for 45 minutes after spraying water to evaporate the accumulated water on the surface of the slag layer. Among them, the water spraying time of the first water-cooling cooling process is 22 minutes, and the water spraying volume is 53m 3 .

[0087] Th...

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Abstract

The invention discloses a blast furnace dry slag crushing method and a blast furnace slag treatment method, and relates to the technical field of metallurgy. The blast furnace dry slag crushing methodcomprises the following steps: paving blast furnace dry slag gravels in a dry slag pool, putting liquid blast furnace slag in a first blast furnace into the dry slag pool through a slag outlet, performing water cooling on the slag surface for the first time after a liquid slag layer is naturally cooled for 12 to 17 minutes, and naturally cooling for 35 to 45 minutes after spraying water; puttingliquid blast furnace slag in a second blast furnace into the dry slag pool through a slag outlet to cover the blast furnace slag produced by the first blast furnace, performing water cooling on the slag surface for the second time after naturally cooling, and performing circulating cooling process for 7 to 9 times; performing crushing in the dry slag pool in the direction of the slag outlet, naturally cooling and spraying water to cool; and sequentially performing first-stage crushing, first-time sieving, second-stage crushing and second-time sieving on the dry slag. The blast furnace slag treatment method comprises the blast furnace dry slag crushing method.

Description

technical field [0001] The invention relates to the technical field of metallurgy, and in particular to a blast furnace dry slag crushing method and a blast furnace slag treatment method. Background technique [0002] Sand is the main material of concrete. With the development of the construction industry and the emphasis on engineering quality, the amount of sand used has increased significantly. With the development of metallurgical technology, blast furnace slag has been solidified after water cooling, and then poured out and naturally cooled to obtain slag with a larger particle size. However, the activity and texture of the slag cannot meet the requirements of the national standard and cannot be used as The raw materials for sand making, or the products of sand making cannot meet the process requirements. [0003] There is no special equipment for blast furnace slag cooling in the existing equipment, and there are often problems that the crushing index and glass conten...

Claims

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Application Information

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IPC IPC(8): C21B3/06C21B3/08
CPCC21B3/06C21B3/08Y02W30/50
Inventor 何森林宋进田传杰蒋屹
Owner 成渝钒钛科技有限公司
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