Steel-making production deoxidizing agent and production process thereof

A production process and deoxidizer technology, applied in the field of molten steel purifier and its production process, can solve the problems affecting the quality of steel, difficult to eliminate, not applicable, etc., to increase the number of continuous pouring tanks, avoid flocculation, and reduce raw material consumption Effect

Inactive Publication Date: 2016-06-29
张福平
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Problems solved by technology

Deoxidize with aluminum and aluminum alloy, the deoxidized product a—AL 2 o 3 , belonging to microscopic inclusions or ultra-microscopic inclusions, which are not easily removed from molten steel and affect the quality of steel
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Method used

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Embodiment Construction

[0011] The steelmaking production deoxidizer of the present invention and its production process are realized in this way, and are described in detail below.

[0012] To prepare the deoxidizer for steelmaking production of the present invention, the following raw materials are formulated into a mixture according to the percentage by weight: 40-45% of aluminum, 25-35% of limestone powder, 2-3% of polyvinyl alcohol, 5-8% of industrial starch, and bentonite Powder 2 to 5%. According to the following production steps: raw material mixing: the above raw materials are taken according to the weight percentage, stirred and mixed; granulation: the mixed raw materials are granulated to make ∮2 ~ 5mm particles; The drying process is carried out at a temperature of 100-200°C.

[0013] The invention has undergone productive tests, and the molten steel has not been calcified during refining, and flocculation does not occur before the machine. The test proves that the deoxidizer can effecti...

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Abstract

The invention relates to a steel-making production deoxidizing agent and a production process thereof, and is characterized in that the deoxidizing agent is a mixture prepared by the following raw materials by the weight percentage: 40-45% of aluminum, 25-35% of a limestone powder, 2-3% of polyvinyl alcohol, 5-8% of industrial starch, and 2-5% of a bentonite powder. The production of the deoxidizing agent comprises the following steps: mixing the raw materials; granulating; and drying: carrying out drying treatment on the deoxidizing agent particles after molding at the temperature of 100-200 DEG C. The steel-making production deoxidizing agent has simple production process, and does not produce three-waste pollution in the production. With use of the deoxidizing agent, oxygen in molten steel can be removed, and the deoxidizing agent can undergo a reaction with deoxidation products to form low-melting silicate compounds, a steel slag layer is caused to float upward and be separated, and inclusions in the molten steel are effectively removed, so that the function of purifying the molten steel is achieved, the occurrence of flocculant flow at a continuous casting water gap is avoided, the number of continuous casting tanks can be increased, the quality of steel is improved, on-site operation is facilitated, and raw material consumption is reduced.

Description

technical field [0001] The invention belongs to a deoxidizing material used in steelmaking production in the metallurgical industry, and in particular relates to a molten steel purifying agent and a production process thereof. Background technique [0002] At present, the deoxidizers used in steelmaking in the domestic metallurgical industry are mainly ferromanganese, ferrosilicon, and silicomanganese, and the final deoxidizers are mainly aluminum and aluminum alloys. Deoxidize with aluminum and aluminum alloy, the deoxidized product a—AL 2 o 3 , which belong to microscopic inclusions or ultramicroscopic inclusions, are not easy to be excluded from molten steel and affect the quality of steel. Converter steelmaking deoxidizer is composed of Ca, Si, and C. Its function is to improve the quality of steel and reduce impurities in steel. However, because it contains SiC, it is not suitable for steel types with low Si and C content. In foreign countries, Mn is directly added t...

Claims

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Application Information

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IPC IPC(8): C21C7/06
Inventor 张福平
Owner 张福平
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