Molten steel scavenger

A purifying agent and molten steel technology, applied in the field of molten steel refining treatment, can solve the problems of poor adsorption of inclusions, inability to deoxidize refining slag, and high oxygen activity of molten steel, and achieve the effects of stable application effect, low total cost and low price.

Inactive Publication Date: 2003-03-26
李杰
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Problems solved by technology

However, in my country's steelmaking production, there are problems such as high oxygen activity of molten steel, strong oxidation of steel slag, and slag from steel to varying degrees, which have great impact on the deoxidation, desulfurization and adsorption of inclusions of conventional calcium aluminate slag. It has a great negative impact, especially with highly oxidizing slag, which has a greater negative impact, and then shows that the conventional aluminum-calcium slag series refining slag cannot deoxidize and desulfurize, and the adsorption effect of inclusions is poor

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  • Molten steel scavenger
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Embodiment Construction

[0017] According to the scope of the chemical composition of the present invention, three batches of molten steel clarifiers were prepared.

[0018] First of all, the batching is carried out, and the CaO raw material can be lime containing CaO>90%, Al 2 o 3 Raw material can use Al 2 o 3 >70% bauxite, Al, Ca, Si, Ba can use metal Al, Ca-Si, SiFe, BaFe, SiCaBa accordingly; the above-mentioned prepared raw materials are broken into particles below 10mm, mixed evenly, and directly added In the electroslag furnace, electrification is used for smelting, and the smelted slag is cooled and crushed into a suitable particle size, which becomes the molten steel purifying agent of the present invention. The chemical composition (Wt%) of three batches of molten steel cleaning agents is as described in Table 1, and the electrified slag temperature of the mixture in the electroslag furnace is as shown in Table 2.

[0019] Using the molten steel purifying agent of batch number 1 in the em...

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Abstract

The invention mainly refers to steel melt purifying. The purificant components (wt%): CaO 45-76%, Al2O3 10-30%, the sum of one or more than two among Al, Ca, Si and Ba is 5-18%; SiO2 <=80%, P<=0.05%, S<=0.1%. Produce the purificant adopting smelting by electrical cinder furnace. The smelting temperature is 1600-1800 deg.C.

Description

technical field [0001] The invention belongs to the field of molten steel refining treatment, and mainly relates to the purification of molten steel, that is, adding a treatment agent to remove inclusions in molten steel. technical background [0002] With the development of science and technology, all walks of life have higher and higher requirements for the quality of applied steel. Therefore, it has become the focus of attention of metallurgical technicians to adopt various practical and effective refining techniques to improve the quality of molten steel and further improve various indicators of molten steel cleanliness. Among the many molten steel refining technologies, the molten steel purifying agent has attracted much attention for its ease of use, low application cost, remarkable effect and stability. [0003] In the prior art, the typical and commonly used refining slag system is calcium aluminate slag system. The slag system has the advantages of low melting poi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/04
Inventor 李杰张杰
Owner 李杰
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