Silicon-barium-potassium system deoxidier for steelmaking and preparation method thereof

A technology of deoxidizer and silicon barium, applied in the field of steelmaking, can solve problems such as high cost and unsmoothness, and achieve the effects of smooth process, content reduction and steelmaking cost reduction

Active Publication Date: 2012-10-31
芜湖县天海耐火炉料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the deoxidizers used in the domestic industrial steelmaking production process are mainly calcium, aluminum or iron alloys, etc. The deoxidation effect has always reached the level of 60-100PPM, and the effect is average. Observe that there are large bubbles and slag inclusions in the section of the billet, and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: silicon-barium-potassium deoxidizer for steelmaking, the parts by weight of its raw materials are: quartz sand 72, barite 35, potassium feldspar 8, fluorite 12, bauxite 18, charcoal 4, vermiculite twenty two.

[0011] Each raw material is weighed according to the weight of the raw materials, crushed to 50-100 mm, impurities are removed, and put into a submerged arc furnace for smelting. The smelting temperature is 2500-2700 ° C, and the smelting time is 2-3 hours. The crushed product is the finished product.

[0012] The following is the deoxidation test, the test steel is low carbon steel, used in 2# furnace, 1.40kg / t steel

[0013] Hot metal conditions:

[0014] [S]S% [P]% 0.037-0.032 0.190-0.150

[0015] Deoxygenation result:

[0016] serial number furnace number Addition amount of the present invention (kg) Oxygen content (PPm) 1 2-12807 20 45.36 2 2-12808 20 46.27 3 2-12809 20 45.25 4 2-1...

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PUM

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Abstract

The invention discloses a silicon-barium-potassium system deoxidier for steelmaking and a preparation method of the silicon-barium-potassium system deoxidier. The silicon-barium-potassium system deoxidier comprises the following raw materials in parts by weight: 70 to 75 parts of quartz sand, 30 to 40 parts of barite, 5 to 10 parts of potassium feldspar, 10 to 15 parts of fluorite, 15 to 20 parts of bauxite, 3 to 5 parts of charcoal and 20 to 25 parts of vermiculite. The silicon-barium-potassium system deoxidier has rationality in formula; and the potassium feldspar, the fluorite, the bauxite, the charcoal and the vermiculite serve as the raw materials. The deoxidier has good effect on deoxidizing; with the adoption of the deoxidier, the contents of nonmetal impurities in the steel can be reduced, the form of the impurities can be changed, the molten steel can be purified, the liquidity of the molten steel can be improved, the molten steel is smooth in continuous casting; and the continuous casting water ports are out of nodules, thus the continuous casting can be smoothly carried out, the service performance and the service life of steel can be improved and prolonged, and the cost of steelmaking can be reduced.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to a silicon-barium-potassium deoxidizer for steelmaking and a preparation method thereof. Background technique [0002] At present, the deoxidizers used in the domestic industrial steelmaking production process are mainly calcium, aluminum or iron alloys, etc. The deoxidation effect has always reached the level of 60-100PPM, and the effect is average. It is observed that there are large bubbles and slag inclusions in the section of the slab, and the cost is high. Contents of the invention [0003] The object of the present invention is to provide a silicon-barium-potassium deoxidizer for steelmaking and a preparation method thereof. The formula of the present invention is reasonable, and potassium feldspar, fluorite, bauxite, charcoal and vermiculite are used as raw materials, and the deoxidation effect is obvious. It can quickly deoxidize the steel, effectively remove the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06
Inventor 吴大宏童振兰
Owner 芜湖县天海耐火炉料有限公司
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