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Silicon-calcium-carbon based deoxidizer

A deoxidizer and carbon-based technology, applied in the field of silicon-calcium-carbon deoxidizers, can solve the problems of water outlet nodulation, high price, and harmful steel quality, so as to reduce steelmaking costs, increase speed and degree, and improve deoxidation capacity Effect

Inactive Publication Date: 2014-09-10
CHANGXING SANZHONG KILN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Deoxidation of molten steel is an important part of steelmaking production. Conventional AL-containing deoxidizers include metallic aluminum, silicon-aluminum-iron, silicon-aluminum-barium, etc., and their prices are generally high. Deoxidation with AL deoxidizers generally results in deoxidation products containing AL2O3 The inclusions are harmful to the quality of the steel, and it is easy to cause nodulation at the outlet

Method used

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Embodiment Construction

[0008] The silicon-calcium-carbon deoxidizer of the present invention has a chemical composition weight percentage of: Ca: 32-38%, Si: 7-11%, C: 6-15%, Al: 3-5%, Re: 0.5 ~1.5%, the balance is Fe and unavoidable impurities.

[0009] The percentages of chemical components included in the impurities in the total weight are: S<0.5%, P<0.03%. The deoxidizer is in powder form, and its particle size is 1-20mm. The small particle size powder material is beneficial to increase the deoxidation area and improve the deoxidation efficiency.

[0010] The silicon-calcium carbon deoxidizer is mixed with Si-Ca-Al alloy, fixed carbon, scrap iron and rare earth rhenium and put into a furnace to make a block semi-finished product, which is ground into a finished product with a particle size of 1-20 mm.

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Abstract

A disclosed silicon-calcium-carbon based deoxidizer comprises the chemical compositions in percent by weight: 32-38% of Ca, 7-11% of Si, 6-15% of C, 3-5% of Al, 0.5-1.5% of Re, and the balance Fe and unavoidable impurities. The deoxidizer is good in deoxygenation effect, and helps to reduce steelmaking cost and improve steelmaking efficiency.

Description

technical field [0001] The invention relates to a silicon-calcium carbonaceous deoxidizer. technical background [0002] Deoxidation of molten steel is an important part of steelmaking production. Conventional AL-containing deoxidizers include metallic aluminum, silicon-aluminum-iron, silicon-aluminum-barium, etc., and their prices are generally high. Deoxidation with AL deoxidizers generally results in deoxidation products containing AL2O3 The inclusions are harmful to the quality of the steel, and it is also easy to cause nodulation at the outlet. Contents of the invention [0003] The technical problem solved by the invention provides a silicon-calcium carbon deoxidizer, which has good deoxidation effect, reduces steelmaking cost and improves steelmaking efficiency. [0004] In order to solve the above-mentioned technical problems, the present invention adopts the following technical scheme: a silicon-calcium carbonaceous deoxidizer, the chemical composition weight per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06
Inventor 杨宏飞
Owner CHANGXING SANZHONG KILN TECH
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