Silicon-barium attapulgite deoxidier for steelmaking and preparation method thereof

A technology of attapulgite and deoxidizer, which is applied in the field of steelmaking, can solve the problems of high cost and unsmoothness, and achieve the effects of reducing content, reducing steelmaking cost, and good deoxidation effect

Active Publication Date: 2013-11-06
芜湖县天海耐火炉料有限公司
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  • Claims
  • Application Information

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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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  • Silicon-barium attapulgite deoxidier for steelmaking and preparation method thereof

Examples

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Effect test

Embodiment 1

[0010] Example 1: silicon barium attapulgite steelmaking deoxidizer, quartz sand 75, celestite 4, kaolinite 12, limestone 12, salt 4, charcoal 8, attapulgite 8, vermiculite 25, black manganese ore 12.

[0011] Each raw material is weighed according to the weight of the constituent raw materials, mixed and smelted at a high temperature of 2200-2600°C for 3-4 hours, cooled and crushed to obtain the particle size requirement: 5-80mm.

[0012] The following is the deoxidation test, the test steel is low carbon steel, used on the 2# furnace

[0013] Hot metal conditions:

[0014] [S]S% [P]% 0.036-0.038 0.190-0.150

[0015] Deoxygenation result:

[0016] serial number furnace number Amount of silicon barium attapulgite steelmaking deoxidizer (kg) Oxygen content (PPm) 1 2-12807 20 41.03 2 2-12808 20 41.41 3 2-12809 20 39.04 4 2-12810 20 36.14 5 2-12811 20 40.17 6 2-12816 20 45.72 7 2-12817 20 37...

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Abstract

The invention discloses a silicon-barium attapulgite deoxidier for steelmaking and a preparation method of the silicon-barium attapulgite deoxidier. The silicon-barium attapulgite deoxidier comprises the following raw materials in parts by weight: 70 to 80 parts of quartz sand, 3 to 5 parts of celestite, 10 to 15 parts of kaolinite, 10 to 15 parts of limestone, 3 to 5 parts of table salt, 5 to 10 parts of charcoal, 5 to 10 parts of attapulgite, 20 to 30 parts of vermiculite and 10 to 15 parts of black manganese ore. The silicon-barium attapulgite deoxidier has rationality in formula; and the celestite, the table salt, the charcoal, the attapulgite and the vermiculite are adopted 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 attapulgite steelmaking deoxidizer 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 attapulgite steelmaking deoxidizer and its preparation method. Using the deoxidizer has a good deoxidation effect, can reduce the content of non-metallic inclusions in steel and change the shape of inclusions, and purify Liquid steel improves the fluidity of molten steel, which is conducive to the smooth production of...

Claims

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Application Information

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Patent Type & Authority Patents(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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