Flux for metallurgical auxiliary materials and preparation method of flux

Abstract

The invention relates to a flux for metallurgical auxiliary materials and a preparation method of the flux. The flux for the metallurgical auxiliary materials is characterized by being prepared from components in percentage by weight as follows: 40%-45% of Fe2O3, 45%-50% of CaO, 1.0%-4.0% of Al2O3, less than 5.0% of SiO2 and 0-1.5% of CaF2, and the melting point of the flux is lower than 1,150 DEG C; the components of the flux for the metallurgical auxiliary materials are crushed, evenly mixed, melted at the high temperature of 1,200-1,550 DEG C and subjected to a melting reaction to produce calcium ferrite; calcium ferrite is processed into powder with the particle size of 200 meshes after being cooled. The flux for the metallurgical auxiliary materials has the advantages of the stable melting acceleration effect, low unit consumption, low environmental pollution due to the fact that the flux contains no fluorine or contains a trace of fluorine, long storage life and the like. The flux has three advantages that the flux is a useful slag making material and an iron material capable of being reduced to iron; the melting point of the flux is 1,150 DEG C and is lower than that of fluorite, so that melting acceleration of the auxiliary materials is facilitated; and environmental pollution is avoided.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, relates to a metallurgical auxiliary material used in steelmaking and ironmaking production, in particular to a metallurgical auxiliary material flux and a preparation method thereof. Background technique [0002] At present, in the production of ironmaking and steelmaking in the metallurgical industry, a large amount of sintered ore, sintered pellets and reduced pellets in molten iron tanks are usually used. The flux used is mostly calcium fluoride material - fluorite. This kind of fluxing material can play a better fluxing effect. However, the presence of calcium fluoride has brought many side effects. For example: iron slag and steel slag contain high fluorine, one is to corrode the refractory materials of molten iron tanks and converters; the other is to pollute the environment; consume. The content of the present invention is a metallurgical auxiliary material flux used in steelmaking...

AI Technical Summary

Problems solved by technology

However, due to the presence of calcium fluoride has brought a lot of side effects

For example: iron slag and steel slag contain high fluorine, one is to corrode the refractory materials of molten iron tanks and converters; the other is to pollute the environment; consume

The content of the present invention is a metallurgical auxiliary material flux and its preparation method in the production of steelmaking and ironmaking. After searching the patents of the China Intellectual Property Office, there are no similar or related records and reports.