Metallurgy auxiliary material fluxing agent and preparation method thereof

Abstract

The invention relates to a metallurgy auxiliary material fluxing agent and a preparation method thereof. The metallurgy auxiliary material fluxing agent is characterized by consisting of the following components in percentage by weight: 40 to 45 percent of Fe2O3, 45 to 50 percent of CaO, 1.0 to 4.0 percent of Al2O3, less than 5.0 percent of SiO2 and 0 to 1.5 percent of CaF2, and the melting point of the fluxing agent is less than 1,150 DEG C. The preparation method comprises the following steps of: crushing the components of the metallurgy auxiliary material fluxing agent, uniformly mixing, melting at the high temperature of between 1,200 and 1,550 DEG C, and performing melting reaction to generate calcium ferrite; and cooling the calcium ferrite, and processing to form powder with the particle size of 200 meshes. The metallurgy auxiliary material fluxing agent has the advantages of stable fluxing effect, low unit consumption, no fluorine, low fluorine content, light environmental pollution, long retention period and the like. The invention three main advantages that: 1, the fluxing agent is a useful slagging material and an iron material which can be reduced into iron; 2, the melting point of the fluxing agent is 1,150 DEG C and is lower than that of fluorite, and the fluxing of auxiliary materials is better facilitated; and 3, the environment cannot be polluted.

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.

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