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Post-treatment method for desulphurization slag

A technology for desulfurization slag and crushed slag, applied in the field of comprehensive utilization of resources, can solve the problems of high production cost, low utilization rate of desulfurization slag, and inability to fully separate, and achieves the effect of cost saving and zero emission

Active Publication Date: 2015-06-17
宝武环科南京资源利用有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problems of incomplete separation, low utilization rate of desulfurization residue and high production cost in the current post-treatment of desulfurization residue, the present invention provides a post-treatment method of desulfurization residue, comprising the following steps:

Method used

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  • Post-treatment method for desulphurization slag

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Embodiment 1

[0027] Such as figure 1 As shown, a post-treatment method for desulfurization slag includes the following steps:

[0028] (1) Cool the hot desulfurization slag, turn over the tank, and separate to obtain lump slag and broken slag;

[0029] (2) The slag is subjected to drop hammer treatment, and then screened with an electromagnetic chuck to obtain high-purity slag iron nuggets and slag iron preliminary products;

[0030] (3) Put the slag obtained in step (1) into a soaking tank equipped with industrial circulating water and soak for more than 4 hours. The soaked slag is slag treated, and the slag is screened by an electromagnetic chuck. Obtain high-purity slag iron nuggets and initial slag iron products;

[0031] (4) The primary slag iron product obtained in step (2) and step (3) is sieved through a vibrating rod sieve with a sieve aperture of 100×100 mm, and the oversize material and undersize material are separated;

[0032] (5) Flatten the screened material obtained in step (4), sc...

Embodiment 2

[0043] After desulfurization and slag removal in the steelmaking process, the hot desulfurization slag generated by the slag removal is quenched and cooled by water, and then the desulfurization slag is transported to the drop hammer workshop with a tank truck for tank turning, and large slag iron lumps are used with a forklift. It is pushed into the drop hammer pit to drop the hammer, and then the slag iron with the dropped hammer is magnetically separated by the electromagnetic chuck to obtain high-purity slag iron for steelmaking. The remaining broken slag iron is transferred to the soaking tank with a forklift. After more than 4 hours of soaking, the soaked broken slag iron is transferred to the slagging area by an excavator, and the soaked broken slag iron is broken with a slag breaker. , Take out the scum on the surface of the broken slag iron, so that this part of the broken slag iron can be further purified, and the high-purity slag iron can be returned to steelmaking. ...

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Abstract

The invention belongs to the field of comprehensive utilization of resources, particularly relates to a post-treatment method for desulphurization slag, and aims to solve the problems of complete separation incapability, low desulphurization slag utilization rate, high production cost and the like in the conventional post-treatment of the desulphurization slag. According to the post-treatment method for the desulphurization slag, the desulphurization slag is divided into different grades, so that the desulphurization slag can be used for different purposes, a comprehensive utilization technology for desulphurization slag resources is developed, the production cost is lowered, zero emission of the desulphurization slag is realized, and environmental pollution and space waste are avoided.

Description

Technical field [0001] The invention belongs to the field of comprehensive utilization of resources, in particular to the field of comprehensive utilization of fertilizers in steel production, and more specifically to a post-treatment method for desulfurization slag. Background technique [0002] With the development of the steel industry, the output of steel continues to increase, which is accompanied by an increase in the amount of steel slag. There are many commonly used desulfurization slag and steel slag treatment processes. The most direct one is that after the hot melt steel slag is quenched by water, it is excavated and loaded with loaders, drop hammers, slag breakers, electric shovels and other equipment, and then transported to the waste Slag field. The storage of desulfurization slag not only occupies a large amount of arable land and pollutes the environment, but also contains 20-40% of recyclable iron in the steel slag, which causes a lot of waste of iron resources....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B3/04C21B3/08B03C1/02B07B1/00C04B5/00
CPCY02P10/20Y02W30/50
Inventor 符生赵勇
Owner 宝武环科南京资源利用有限公司
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