Deoxidizing agent for stainless steel

A deoxidizer, stainless steel technology, applied in the field of metallurgy, can solve problems such as affecting the surface gloss of stainless steel, and achieve the effect of improving irregular structure, improving adsorption performance and reducing damage

Inactive Publication Date: 2018-11-23
黄智慧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a deoxidizer for industrial steelmaking in view of the problem that the commonly used deoxidizer for industrial steelmaking can affect the surface gloss of stainless steel

Method used

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  • Deoxidizing agent for stainless steel

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Experimental program
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Effect test

preparation example Construction

[0028] The preparation method of slow-release deoxygenation microspheres, comprises the steps:

[0029] (1) Mix montmorillonite and solvent A according to the mass ratio of 1:15~25, stir at 350~500r / min for 20~45min, let stand for 30~50min, filter, and take the filter residue with 3~6 times the quality of the filter residue. After washing with deionized water, move to 65~80°C for oven drying until the water content is below 5% to obtain acidified montmorillonite. Take acidified montmorillonite and add dimethylacetamide in a mass ratio of 1:4~6 to mix, and heat up to 80~88℃, vacuumize to remove the water in the system to obtain the pretreated product, take the pretreated product and add isophorone diisocyanate 2~5 times the amount of the pretreated product to mix, stir at 800~1000r / min for 20~40min, then add Mix the caprolactam with 15~30% of the pretreatment substance, homogenize at 1000~1200r / min for 10~25min, get the filler, and set aside;

[0030] (2) Mix starch and deioni...

Embodiment 1

[0037] Additives: tertiary butyl hydroquinone and SiO at a mass ratio of 5:1 2 Mix to get additives.

[0038] Coating solution: mix chitosan with a deacetylation degree of 90% and acetic acid solution with a mass fraction of 8% according to a mass ratio of 1:20, and stir magnetically at 400r / min for 25min to obtain a chitosan solution, calculated in parts by mass , take 40 parts of chitosan liquid, 20 parts of hydroxypropyl methylcellulose, 8 parts of lactose, 10 parts of glycerol triacetate, and 0.2 parts of titanium dioxide, mix them, and disperse them by ultrasonic waves at a frequency of 45 kHz for 10 minutes to obtain a coating solution.

[0039] Solvent A: Mix HCl solution with a concentration of 0.01mol / L and sodium citrate at a mass ratio of 3:1 to obtain Solvent A.

[0040] Solvent B: Mix dopamine solution with a mass concentration of 1.5 g / L and polyvinylpyrrolidone at a mass ratio of 7:1 to obtain solvent B.

[0041] Oil phase: castor oil.

[0042] Adjuvant: Mix ...

Embodiment 2

[0053] Additives: tertiary butyl hydroquinone and SiO at a mass ratio of 8:1 2 Mix to get additives.

[0054] Coating solution: mix chitosan with a deacetylation degree of 90% and acetic acid solution with a mass fraction of 8% according to a mass ratio of 1:30, and stir magnetically at 600r / min for 50min to obtain a chitosan solution, calculated in parts by mass , take 60 parts of chitosan solution, 30 parts of hydroxypropyl methylcellulose, 12 parts of lactose, 15 parts of glycerol triacetate, and 0.6 parts of titanium dioxide, mix them, and disperse them by ultrasonic waves at a frequency of 55 kHz for 15 minutes to obtain a coating solution.

[0055] Solvent A: Mix HCl solution with a concentration of 0.01mol / L and sodium citrate at a mass ratio of 3:2 to obtain Solvent A.

[0056] Solvent B: Mix dopamine solution with a mass concentration of 1.5 g / L and polyvinylpyrrolidone at a mass ratio of 7:3 to obtain solvent B.

[0057] Oil phase: rapeseed oil.

[0058] Adjuvant:...

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Abstract

The invention discloses a deoxidizing agent for stainless steel, belonging to the technical field of metallurgy. Montmorillonite is used as a raw material, and is subjected to acidification, dehydration by vacuumizing and grafting of an isocyanate functional group under the action with isophorone diisocyanate, so that an interlayer is further enlarged; filler is prepared by means of termination ofcaprolactam; under the action of polyvinyl pyrrolidine, the compatibility between a system and tissues is improved, partial chemical bonding is produced, and the deoxidation effect is improved; dopamine is added; in a preparation process, the dopamine can be oxidized and self-polymerized with oxygen at first, thus forming polydopamine; in a molecular structure of the dopamine, -OH can be oxidizedinto a carbonyl group due to the structural action and good reductive activity, so that second deoxidation is realized; the dopamine can also reduce part of metal ions in the preparation process of the stainless steel, can perform trace filling on the concave parts and effectively improves the glossiness. The deoxidizing agent provided by the invention solves the problem that the deoxidizing agent, commonly used at present, for industrial steel-making influences the surface glossiness of the stainless steel.

Description

field of invention [0001] The invention relates to the technical field of metallurgy, in particular to a deoxidizer for stainless steel. Background technique [0002] Converter blowing is mainly to supply a large amount of oxygen to the molten iron, and add slagging auxiliary materials to the molten iron to make the harmful elements in the molten iron emulsify on the surface of the molten steel, and finally remove the harmful elements such as C, P, and S in the molten iron . The main element in molten iron is C, and the reaction of C and O directly affects the progress of other reactions in the steelmaking process, mainly because the reaction of carbon and oxygen can generate a large amount of power, which accelerates the progress of physical and chemical reactions, and is also beneficial to non-ferrous metals. The floating of metal inclusions and the discharge of harmful gases. However, there is an equilibrium relationship between the reaction of carbon and oxygen. When t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06
CPCC21C7/06Y02P10/20
Inventor 黄智慧陈建春卢星
Owner 黄智慧
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