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Production technology of high quality steel slag breeze

A production process and technology of steel slag powder, applied in the field of production technology of steel slag slag powder, can solve the problems of restricting the popularization and application of steel slag, unreasonable particle gradation, poor easy grinding performance of steel slag, etc., so as to improve work performance and high hydration activity. , the effect of reducing the fluctuation of product quality

Inactive Publication Date: 2008-06-04
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are two reasons that severely restrict the popularization and application of steel slag: first, steel slag contains a relatively large amount of metallic iron, resulting in extremely poor wearability of steel slag, and to fully exert the hydration activity of each mineral phase in steel slag, it is necessary to Grind it into fine powder to obtain sufficient physical activation; second, steel slag contains a large amount of f-CaO, MgO and other substances, which will easily cause harmful local expansion and damage the product when the cementitious material system mixed with steel slag is hydrated. performance
At present, the steel slag powder prepared by the traditional process fails to fully solve the above problems. The produced steel slag powder has low activity, large quality fluctuations, high iron content, and unreasonable particle gradation.

Method used

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  • Production technology of high quality steel slag breeze
  • Production technology of high quality steel slag breeze
  • Production technology of high quality steel slag breeze

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Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1: raw material: steel slag produced by Wuhan Iron and Steel Company.

[0040] like figure 1 Shown, a kind of production technology of steel slag ore powder, its steps are as follows: iron removal is carried out by electromagnetic sucker for the first time after steel slag is cooled, steel slag is crushed by jaw crusher for the first time after iron removal for the first time; The steel slag after the first crushing is deironed by the first ferromagnetic iron remover for the second time, and the steel slag is crushed by the impact crusher for the second time after the second iron removal; The third iron removal is carried out by the electromagnetic iron remover, and the steel slag is crushed by the column mill for the third time after the third iron removal; the steel slag after the third crushing is carried out by the third iron electromagnetic iron remover for the fourth iron removal, After the fourth iron removal, the fourth crushing is carried out by the...

Embodiment 2

[0067] Embodiment 2: as figure 1 As shown, it is basically the same as embodiment 1, the difference is only: as Figure 17 As shown, the iron removal system includes one set of electromagnetic iron removal equipment and one set of O-SEPA high-efficiency powder separator. The steel slag powder discharged from the steel slag tube mill enters one set of electromagnetic iron removal equipment and one set of O-SEPA efficient powder separator Iron removal is carried out to obtain iron powder raw materials and steel slag ore powder.

Embodiment 3

[0068] Embodiment 3: basically the same as Embodiment 1, the only difference is: as Figure 18 As shown, the iron removal system includes a settling chamber and a set of electromagnetic iron removal equipment. The steel slag powder discharged from the steel slag tube mill enters the settling chamber in turn, and the electromagnetic iron removal equipment removes iron to obtain iron powder raw materials and steel slag ore powder.

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Abstract

A technology for preparing the breeze from steel slag includes such steps as cooling, removing iron by electromagnetic sucking disc, breaking by alligator, removing iron by ferroelectric magnetic iron remover, breaking by impact crusher, removing iron by ferroelectric magnetic iron remover, pulverizing by post grinder, removing iron by ferroelectric magnetic iron remover, pulverizing by rod grinder, removing iron by ferroelectric magnetic iron remover, pulverizing by tube grinder, and removing iron by iron removing system. The product has low content of Fe and large specific surface area.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a production process of steel slag ore powder. Background technique [0002] Steel slag is a huge amount of metallurgical slag. At present, my country's annual output of steel slag is about 10 million tons. Most of the steel slag has not been effectively utilized. On the one hand, it takes up a lot of scarce land resources to build storage yards, and it is easy to cause secondary damage to the environment. Pollution, on the other hand, is also a waste of resources. Steel slag contains a certain amount of C 2 S, C 3 Cement clinker minerals such as S and some vitreous bodies have considerable hydration activity and have the potential to be used to prepare cementitious materials. However, there are two reasons that severely restrict the popularization and application of steel slag: First, steel slag contains a large amount of metallic iron, which leads to ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B3/04B02C1/02B03C1/02
CPCY02W30/50
Inventor 胡曙光何永佳丁庆军陈平吕林女王发洲
Owner WUHAN UNIV OF TECH
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