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Electric furnace highly effective metallurgy complexing agent

A gold compounding agent and compounding agent technology, applied in the direction of electric furnace, furnace, furnace type, etc., can solve the problems of low deoxidation ability and slag adjustment ability, weak slag hanging ability to protect the furnace, low MgO content, etc., to improve the working environment, Improves the yield of molten steel and has a long-lasting effect

Inactive Publication Date: 2007-09-12
马鞍山中冶钢铁冶金高新技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All there are three major problems in the practice of some above-mentioned factories and several formulas disclosed in two patent application documents: 1, the deoxidation ability can meet the requirements, the MgO content is too low (only 8%-10%), and the slag is sticky, The ability to hang slag to protect the furnace is relatively weak; 2. If the MgO content can meet the requirements of slag sticking and hanging slag to protect the furnace, the deoxidation ability is relatively weak, and the (FeO) reduction rate is ≤ 18%; 3. If the foaming ability is strong, the deoxidization ability and Slagging ability is too low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mix magnesia, graphite, silicon carbide, calcium oxide, and silicon-calcium powder according to the specified component content, mix well with common methods, add an appropriate amount of water and stir evenly to form a wet powder, and press the wet powder into a block or spherical shape. After drying, sieving to make the final product, the particle size is: 50-60mm.

[0020] In the electric furnace trial, the bulk compounding agent is added in the middle and late stages of the oxidation period of the electric furnace steelmaking process, and then the content of FeO and MgO in the slag is detected to calculate the reduction rate of FeO η (FeO) (%) and the increase of magnesium oxide in slag Δ (MgO) (%). The above experimental data are listed in Table 1.

Embodiment 2

[0022] Implementation with the steps and methods of Example 1, its experimental data are listed in Table 1.

Embodiment 3

[0024] Carried out with the method and steps of Example 1, and its experimental data are listed in Table 1.

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Abstract

The invention relates to a kind of efficient metallurgical complex reagent for electrical furnace, which is particularly relates to an additives for the production of a special slag. The complex reagent contains by percentage of quality as follow: 35~50% of MgO, 20~30% of C, 4~15% of SiC, 5~9% of CaSi, 8~15% of CaO, and a remaining amount of impurities and binder. The complex reagent is added into the electrical furnace at the middle and late oxidation period of electric furnace for significant effect.

Description

technical field [0001] The invention belongs to an auxiliary material for electric furnace steelmaking, in particular to an additive for electric furnace production of slag with special composition. Background technique [0002] Modern electric furnaces generally transfer the task of the reduction period of the electric furnace to the refining furnace outside the furnace to complete. For these electric furnaces, the entire smelting process only has the melting period and the oxidation period. During the oxidation period of electric furnace smelting, the requirement for oxidizability of slag is "high at the front and low at the end". That is to say, in the early stage, there must be enough (FeO) content to melt the slag, which is beneficial to dephosphorization, temperature rise and adsorption of gases and inclusions; and in the later stage, the (FeO) content must be greatly reduced, which is not only beneficial to reduce the iron and steel material Consumption, improve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/54
Inventor 黄志勇颜根发薜敬梅袁庭伟
Owner 马鞍山中冶钢铁冶金高新技术有限公司
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