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Metallurgical auxiliary material fluxing agent and preparation method thereof

A technology of flux and auxiliary materials, applied in the field of metallurgy, can solve the problems of environmental pollution and consumption, and achieve the effects of less environmental pollution, low unit consumption and stable solubilization effect.

Inactive Publication Date: 2010-06-23
LIAONING TIANHE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of fluxing material can play a good role in fluxing, but the existence of calcium fluoride has brought many side effects, such as: making iron slag and steel slag contain high fluorine, one is to corrode the molten iron tank Second, it pollutes the environment; third, this kind of material does not participate in the metallurgical reaction in the metallurgical process, which is a relatively ineffective consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A metallurgical auxiliary material flux is composed of the following components by weight percentage:

[0021] Fe 2 o 3 42.0%; CaO 50.0%; Al 2 o 3 4.0%; SiO 2 4.0%;

[0022] Its preparation method is to crush the above components into particles with a particle size of 0-20 mm, mix them evenly and melt them at a high temperature of 1200 ° C, and the melting reaction will generate calcium ferrite, and after cooling to normal temperature, crush them into powders with a fineness of 200 mesh material.

Embodiment 2

[0024] A metallurgical auxiliary material flux is composed of the following components by weight percentage:

[0025] Fe 2 o 3 44.6%; CaO 49.0%; Al 2 o 3 3.0%; SiO 2 2.6%; CaF 2 0.8%;

[0026] Its preparation method is to crush the above components into particles with a particle size of 0-20 mm, mix them evenly, and melt them at a high temperature of 1300 ° C to form calcium ferrite after melting, and then crush them into powders with a fineness of 200 mesh after cooling to normal temperature State material.

Embodiment 3

[0028] A metallurgical auxiliary material flux is composed of the following components by weight percentage:

[0029] Fe 2 o 3 40.0%; CaO 50.0%; Al 2 o 3 4.0%; SiO 2 5.0%; CaF 2 1.0%;

[0030] Its preparation method is to crush the above components into particles with a particle size of 0-20 mm, mix them evenly, and melt them at a high temperature of 1400 ° C to form calcium ferrite after melting, and then crush them into powders with a fineness of 200 mesh after cooling to normal temperature State material.

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Abstract

The invention relates to the field of metallurgical technology, in particular to a metallurgical auxiliary material fluxing agent which is characterized in that the melting point of the fluxing agent is 1100 DEG C-1150 DEG C, and the fluxing agent contains, by weight percent, 40-50 Fe2O3, 45-50 CaO, 2.0-6.0 AL2O3, 0-5.0 SiO2 and 0-1.5CaF2. The preparation method is as follows: crushing the compositions to 0-20mm grains, mixing, melting at high temperature of 1200 DEG C -1550 DEG C so as to get calcium ferrite after the melting reaction, cooling and then grinding the calcium ferrite to 200-mesh powder. The fluxing effect can be best when the amount of the fluxing agent added is 4-6% by weight percent of the agglomerate or pellets reduced in a rotary kiln, and after being added, the fluxing agent is mixed with the agglomerate or pellets. The invention has the advantages that: firstly, the fluxing agent not only has fluxing function but also participates in the metallurgical reaction, and secondly, the melting point of the fluxing agent is 1150 EDG C which is lower than that of the fluxing agent of fluorite, so the fluxing agent has better fluxing action to the auxiliary material and is stable in fluxing effect, low in unit and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a metallurgical auxiliary material flux used in steelmaking and ironmaking production and a preparation method thereof. Background technique [0002] At present, in the production of ironmaking and steelmaking, a large amount of sintered ore and reduced pellets in the converter are usually used. The flux used is mostly calcium fluoride material - fluorite. This kind of fluxing material can play a good role in fluxing, but the existence of calcium fluoride has brought many side effects, such as: making iron slag and steel slag contain high fluorine, one is to corrode the molten iron tank Second, it pollutes the environment; third, this kind of material does not participate in the metallurgical reaction in the metallurgical process, which is a relatively ineffective consumption. Contents of the invention [0003] The object of the present invention is to provide a metallurgi...

Claims

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Application Information

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IPC IPC(8): C21C5/28C21B5/00
Inventor 陈云天马世德
Owner LIAONING TIANHE TECH
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