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Preparation method of converter foaming slag pressing agent

A foamed slag and slag-pressing agent technology, applied in the metallurgical field, can solve the problems of blowing damage, splashing, burning equipment, etc., and achieve the effect of reducing costs

Inactive Publication Date: 2018-03-09
董少明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Serious mistakes in operation will cause splashing, causing slag and iron to spurt out instantly, causing blowing damage and increasing the consumption of steel materials
At the same time, splashing also endangers the safety of operators and may burn equipment
Therefore, taking measures directly to suppress the development of foamy slag will be more beneficial to eliminate the hidden dangers caused by excessive foaming of slag, but there is no published literature introducing technical solutions to such problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mix boron mud powder, metallurgical lime powder and aluminum ash evenly, and the chemical analysis of the mixing ratio is MgO10%, Al 2 o 3 20%, SiO 2 6%, FeO2 o 3 3%, the balance CaO and impurities;

[0019] The mixed material is moistened with water on the pelletizer and rolled into balls with a diameter of 20-30mm, and then dried naturally until the water weight content is less than 1%, to obtain the converter foam slag pressing agent.

Embodiment 2

[0021] Mix boron mud powder, metallurgical lime powder and aluminum ash evenly, and the chemical analysis of the mixing ratio is MgO13%, Al 2 o 3 17%, SiO 2 7%, FeO2 o 3 2%, the balance CaO and impurities;

[0022] The mixed material is moistened with water on the pelletizer and rolled into balls with a diameter of 20-30mm, and then dried naturally until the water weight content is less than 1%, to obtain the converter foam slag pressing agent.

Embodiment 3

[0024] Mix boron mud powder, metallurgical lime powder and aluminum ash evenly, and the chemical analysis of the mixing ratio is MgO15%, Al 2 o 3 15%, SiO 2 8%, FeO2 o 3 1%, the balance CaO and impurities;

[0025] The mixed material is wetted with water on the pelletizer and rolled into balls with a diameter of 20~30mm, and then dried at 120±10°C until the moisture content is less than 1%, and the converter foam slag suppressant is obtained.

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PUM

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Abstract

The invention discloses a preparation method of a converter foaming slag pressing agent. The preparation method is implemented according to the following steps that (1), boric sludge powder, metallurgical lime powder and aluminum ash are mixed to be uniform; and (2), the mixed materials are wetted with water on a pelletizer and rolled into balls, the balls are naturally dried or dried at 120+ / -10DEG C till the water content by weight is lower than 1%, and the converter foaming slag pressing agent is obtained. According to the preparation method of the converter foaming slag pressing agent, anew using way is provided for industrial waste materials, energy source saving, resource utilizing rate increasing and environment protecting are facilitated, and meanwhile the problem that slag in aconverter is properly foamed can be solved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a preparation method of a converter foam slag pressing agent. Background technique [0002] During the smelting process of the converter, due to the strong impact of the oxygen jet on the molten pool and the boiling effect of CO bubbles generated by the carbon-oxygen reaction, the metal, slag and gas in the upper part of the molten pool are violently mixed in three phases, forming developed emulsification and foam in the converter. state. The accurate emulsification concept refers to the dispersion of metal droplets or bubbles in the slag. If the amount of droplets or bubbles is small and can move freely in the slag, this phenomenon is called slag steel or slag gas emulsification; if there are only bubbles in the slag, Moreover, if the number of bubbles is too large or the bubbles are too large to move freely, this phenomenon is called slag foaming, which is a com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/28C21C5/36
CPCC21C5/28C21C5/36
Inventor 董少明
Owner 董少明