Composite silicomanganese deoxidizer and preparation method thereof

A composite deoxidizer and silicon manganese technology, applied in the field of steelmaking, can solve the problems of unsmoothness and high cost, and achieve the effects of smooth process, content reduction and improvement of molten steel fluidity

Active Publication Date: 2013-12-18
芜湖县天海耐火炉料有限公司
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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

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  • Composite silicomanganese deoxidizer and preparation method thereof

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Embodiment 1

[0010] Embodiment 1: Silico-manganese composite deoxidizer, the parts by weight of its raw materials are: quartz sand 32, black manganese ore 15, iron shale 18, fly ash 62, bauxite 12, salt 1.5, vermiculite 35.

[0011] The preparation method of the silicomanganese composite deoxidizer comprises the following steps: weighing each raw material according to the weight of the constituent raw materials, putting them into a submerged arc furnace for smelting, the smelting temperature is 1850-2200°C, the smelting time is 1-4 hours, crushing, removing Impurities are 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 45.04 2 2-...

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Abstract

The invention discloses a composite silicomanganese deoxidizer and a preparation method thereof. The composite silicomanganese deoxidizer consists of the following raw materials in parts by weight: 30-35 parts of quartz sand, 10-20 parts of black manganese ore, 15-20 parts of irony shale, 60-65 parts of fly ash, 10-15 parts of bauxite, 1-2 parts of salt and 30-40 parts of vermiculite. The composite silicomanganese deoxidizer is reasonable in formula, and the fly ash, the bauxite and the salt are added in the raw materials. The composite silicomanganese deoxidizer has good deoxidizing effect, and can reduce the content of non-metallic inclusions in steel and change the forms of the inclusions so as to purify the liquid steel and improve the molten steel liquidity. The molten steel continuous casting billet process is smooth, and nodulation does not occur at a continuous casting gate, so that smooth production of continuous casting is facilitated the usability of the steel is improved, the service life of the steel is prolonged, and the steelmaking cost is reduced.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to a silicon-manganese composite 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 purpose of the present invention is to provide a silicon-manganese composite deoxidizer and its preparation method. The formula of the present invention is reasonable, and fly ash, bauxite and salt are added to the raw materials, and the deoxidation effect is obvious, and the inclusions in molten steel can be effectively removed. , Improve the fluidity of molten steel. [0004] In order to...

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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