Supercharge Your Innovation With Domain-Expert AI Agents!

Magnesium deoxidizer, and production method and use method thereof

A magnesium deoxidizer and production method technology, applied in the field of steelmaking and refining, can solve the problems of low magnesium yield and magnesium addition, and achieve the effects of simple process, safe use, and improved properties and forms

Active Publication Date: 2013-03-06
ANGANG STEEL CO LTD
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the deoxidizer is added to the molten steel, there is also the disadvantage that only a small amount of gasified magnesium vapor dissolves into the molten steel, and magnesium cannot be effectively added to the molten steel, which eventually leads to the recovery of magnesium in the steel. low rate
[0006] As mentioned above, there are certain limitations in the production and use of existing magnesium-containing deoxidizers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Magnesium deoxidizer, and production method and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) weigh the following raw materials by the following percentages by weight: magnesia powder 70%, carbon powder 30%, nickel powder content is 10% of magnesia powder and carbon powder gross weight, described magnesia powder, carbon powder and The particle size of nickel powder is 120 mesh;

[0019] (2) Mechanically mix the raw material powder and the binding agent in a mixer, the mixing time is 2.5 hours, the binding agent is carboxymethyl cellulose, and the addition accounts for 2% of the total amount of materials;

[0020] (3) Use a roller press to press into blocks, and the pressure of the roller press is 600Kg / cm 2 , the block particle size is 10mm;

[0021] (4) Crushing the compacted briquette, and screening out a particle size of 3-5mm particles as a finished deoxidizer;

[0022] (5) Dry and package the screened products for later use. The drying temperature is 150° C., and the drying time is 2 hours.

Embodiment 2

[0024] (1) weigh the following raw materials by the following percentages by weight: magnesia powder 80%, carbon powder 20%, nickel powder content is 15% of magnesia powder and carbon powder gross weight, described magnesia powder, carbon powder and The particle size of nickel powder is 200 mesh;

[0025] (2) Mechanically mix the raw material powder and the binding agent in a mixer, the mixing time is 3 hours, the binding agent is carboxymethyl cellulose, and the addition accounts for 3% of the total amount of materials;

[0026] (3) Use a roller press to press into blocks, and the pressure of the roller press is 600Kg / cm 2 , the block particle size is 20mm;

[0027] (4) Crushing the compacted briquette, and screening out a particle size of 3-5mm particles as a finished deoxidizer;

[0028] (5) The selected products are dried and packaged for later use, the drying temperature is 135° C., and the drying time is 2.5 hours.

Embodiment 3

[0030] (1) weigh out following raw material by following weight percentage: magnesium oxide powder 70%, carbon powder 30%, the particle size of described magnesium oxide powder and carbon powder is 270 orders;

[0031] (2) Mechanically mix the raw material powder and the binding agent in a mixer, the mixing time is 3.5 hours, the binding agent is carboxymethyl cellulose, and the addition accounts for 3.5% of the total amount of materials;

[0032] (3) Use a roller press to press into blocks, and the pressure of the roller press is 750Kg / cm 2 , the block particle size is 30mm;

[0033] (4) Crushing the compacted briquette, and screening out a particle size of 3-5mm particles as a finished deoxidizer;

[0034] (5) Dry and package the screened products for later use. The drying temperature is 145° C., and the drying time is 3 hours.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Granularityaaaaaaaaaa
Particle sizeaaaaaaaaaa
Granularityaaaaaaaaaa
Login to View More

Abstract

The invention provides a magnesium deoxidizer, and a production method and a usage method thereof. The magnesium deoxidizer is mainly composed of 70-80% of magnesium oxide powder and 20-30% of carbon powder. The production method of the magnesium deoxidizer comprises the following steps: 1, weighing the magnesium oxide powder, the carbon powder and nickel powder according a ratio; 2, mixing the above raw powders with a binder in a mixer for 2-4h; and 3, briquetting, crushing, sieving to obtain particles with the particle sizes of 3-5mm, drying, and packaging for later use. The use method of the magnesium deoxidizer comprises the following steps: 1, adding the deoxidizer to an RH bunker; 2, adding the deoxidizer to a vacuum chamber in 2-5 batches according to a case that 2-5kg of the deoxidizer is added to each ton of steel, and controlling the rising argon flow at 130-150NM<3> / h; and 3, controlling the cycling time between 6min and 8min after the addition of the deoxidizer. The magnesium deoxidizer has the advantages low making cost, simple technology, no pollution, effective and deep de-oxidation of molten steel, safe use, high magnesium yield, and improvement of the properties and the forms of inclusions.

Description

technical field [0001] The invention belongs to the technical field of steelmaking and refining, and in particular relates to a magnesium deoxidizer, a preparation method thereof, and an addition and use method in the RH treatment process. Background technique [0002] As users have more and more strict requirements on the quality of steel, in order to meet the needs of high strength, high life, corrosion resistance, and harsh conditions, the purity of molten steel must be greatly improved. The lower the total oxygen content in the steel, the less the number of non-metallic inclusions, the smaller the size, and the more uniform the distribution, the higher the purity level of the steel, the better the overall performance, the wider the use and the longer the service life . Magnesium has a strong deoxidation ability. Magnesium has a good deoxidation effect on molten steel. Its deoxidation products are eliminated quickly, and the properties and shapes of the generated inclusi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C21C7/06C21C7/10
Inventor 尚德礼吕春风康磊廖相巍林洋常桂华
Owner ANGANG STEEL CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com