Steelmaking method

A technology for tons of steel and ladle, applied in furnace types, furnaces, electric furnaces, etc., can solve the problems of high cost, unstable clean steel purity, large amount of silicon calcium wire, etc., to improve alloy yield and improve product cleanliness , the effect of reducing production costs

Active Publication Date: 2015-05-06
宁波万冠熔模铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the purity of clean steel is not stable, and the amount of aluminum and silicon-calcium wire is relatively large, and the cost is high

Method used

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Embodiment Construction

[0044] Below in conjunction with embodiment the present invention is further described. However, the uses and purposes of these exemplary embodiments are only used to illustrate the present invention, and do not constitute any form of limitation to the actual protection scope of the present invention, nor limit the protection scope of the present invention thereto.

[0045] The invention provides a steelmaking method, comprising the following steps:

[0046] 1. Furnace charging

[0047] (1). Determine the loading amount:

[0048] Furnace times for leaving steel and slag: charging amount = 0.85 × (tapping amount - ferroalloy amount) / comprehensive yield of iron and steel materials

[0049] Steel slag removal furnace times: charging amount = 0.85 × (tapping amount - ferroalloy amount - remaining steel amount in the furnace) / comprehensive yield of iron and steel materials

[0050] The first furnace of the empty furnace: charging amount = 0.85 × (tapping amount of steel - ferr...

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Abstract

The invention discloses a steelmaking method and belongs to the technical field of smelting. The steelmaking method comprises the following steps: 1, electric furnace charging; 2, electric furnace oxidizing melting; 3, electric furnace tapping; 4, LF furnace refining; 5, VD furnace refining; and 6, on-table continuous casting. The steelmaking method is capable of solving the technical problems of the traditional clean steel of instability in purity, large use amount of aluminum and silicon-calcium wire and high cost and further lowering the content of impurity in molten steel and can be widely applied to steelmaking production.

Description

technical field [0001] The invention relates to a metal smelting method, more particularly to a high-purity steel steelmaking method, and belongs to the technical field of smelting. Background technique [0002] In the field of metal smelting technology, in order to improve product performance, the cleanliness of steel is a very important measure. The meaning of "high-purity steel" refers to a class of steel products in which the content of various impurities such as oxides, sulfides, phosphorus, hydrogen, nitrogen, etc. is very low, so that the steel product has a more uniform crystal The phase and strength are greater, and it has a wider range of applications, which can be applied to more high-end follow-up products. [0003] In the process of steel production, the deoxidized product alumina (Al 2 o 3 ) and silicon oxide (SiO 2 ), this is because the oxygen dissolved in molten steel can react with the added aluminum or silicon deoxidizer, which can generate inclusions ...

Claims

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Application Information

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IPC IPC(8): C21C5/52C21C7/06C21C7/10
CPCY02P10/20
Inventor 应寒冰
Owner 宁波万冠熔模铸造有限公司
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