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Calcium deoxidizer using nano graphite powder as carrier and preparation method thereof

A technology of nano-graphite powder and deoxidizer, which is applied in the field of deoxidizer for steelmaking, can solve problems such as poor fluidity and high viscosity of molten steel, and achieve the effects of improving fluidity, removing inclusions, and increasing recovery rate

Inactive Publication Date: 2015-07-08
芜湖华炀炉料科技有限公司
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Problems solved by technology

Adding nano-graphite powder as a dispersant to molten steel can effectively solve the problem of high viscosity and poor fluidity of molten steel

Method used

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Embodiment Construction

[0014] specific implementation plan

[0015] The present invention will be described in detail below through specific examples.

[0016] A calcium-based deoxidizer using nano-graphite powder as a carrier, prepared from the following raw materials in parts by weight (kg): calcium silicide 32, silicon carbide 14, anthracite coal powder 1.5, nano-graphite powder 2.5, and hydrochloric acid with a concentration of 5% 40. Polyvinyl alcohol 3;

[0017] A kind of calcium series deoxidizer with nano-graphite powder as carrier of the present invention is made by following specific steps:

[0018] (1) Put calcium silicide and silicon carbide into a pulverizer and crush them into 200-mesh powder to form a mixed powder, then mix polyvinyl alcohol with 3 times the amount of water, disperse evenly, heat to 60-70°C, and keep stirring To polyvinyl alcohol dissolved completely to form a solution;

[0019] (2) Add the mixed powder, polyvinyl alcohol solution, anthracite powder, and nano-graph...

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Abstract

The invention discloses a calcium deoxidizer using nano graphite powder as a carrier. The invention is characterized in that the calcium deoxidizer is prepared from the following raw materials in parts by weight: 32-35 parts of calcium silicide, 14-20 parts of silicon carbide, 1.5-2.5 parts of anthracite duff, 2.5-4 parts of nano graphite powder, 40-50 parts of 5% hydrochloric acid and 3-5 parts of polyvinyl alcohol. In order to solve the problems in the prior art, the formula and technique are modified. By adopting the calcium silicide and other components, the calcium deoxidizer has favorable deoxidizing and desulfurizing effects, and has favorable carburization effect when being used for producing straight carbon steel, low-alloy steel and other types of medium-carbon steel. The added nano graphite powder can improve the flowability of the molten steel, effectively removes inclusions in the steel, enhances the purity of the molten steel and prevents tundish nozzle blocking. The technique is convenient for industrial control, has favorable deoxidizing effect, and can enhance the recovery rate of the alloy elements.

Description

technical field [0001] The invention relates to the technical field of deoxidizers for steelmaking, in particular to a calcium-based deoxidizer using nano-graphite powder as a carrier and a preparation method thereof. Background technique [0002] With economic development and scientific and technological progress, the demand for steel is increasing in industry and daily life, and the requirements for steel quality are also getting higher and higher. Therefore, in addition to increasing the improvement of steelmaking equipment and the innovation of production technology, it is also very important to strengthen the research and development of deoxidized alloys for steelmaking materials. The quality and performance of the final steel are directly affected by the level of oxygen content in the steel. A high oxygen content will cause the carbon to oxidize again due to the partial concentration of carbon and oxygen during the condensation process of molten steel, which will caus...

Claims

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Application Information

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IPC IPC(8): C21C7/06
Inventor 吴大宏童振兰
Owner 芜湖华炀炉料科技有限公司
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