Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Steel-making aluminum-calcium-iron deoxidizer and preparation method

A technology of iron deoxidizer and deoxidizer, which is applied in the field of metallurgy, can solve the problems of high cost of CaSi alloy wire, low utilization rate of calcium wire, and silicon increase of molten steel, etc., and achieve the effect of large proportion of the finished product, fast floating, and high strength of the finished product

Active Publication Date: 2010-12-08
上海盛宝冶金科技有限公司
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the utilization rate of calcium wire is low and the cost is high, and the cost of CaSi alloy wire is also high and will cause Si increase in molten steel.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (Table 1)

[0015] Raw material components

Particle size (mm)

%(weight)

Metal Aluminum Powder

0~2

58

Calcium metal powder

0~2

30

Metal Iron Powder

0~2

12

[0016] After the raw materials are pressed into balls according to the above components and particle sizes, the ball forming rate is greater than 98%, and 100% of the balls fall freely from a height of 2m to the cement floor and are greater than 10mm. The appearance is smooth and the finish is high.

[0017] (Table 2)

[0018] Raw material components

Particle size (mm)

%(weight)

Metal Aluminum Powder

0~4

58

Calcium metal powder

0~4

30

Metal Iron Powder

0~4

12

[0019] After the raw materials are pressed into balls according to the above components and particle sizes, the ball forming rate is greater than 96%, and 98% of the balls fall freely from a height of 2m to the cement floor greater tha...

Embodiment 2

[0028] After the above components are pressed into balls, they are used in the RH refining process when smelting IF steel in a steel factory. After adding 0.5kg / t molten steel, the results are as follows:

[0029] The oxygen content of the molten steel is 35ppm after deoxidation by adding the deoxidizer of the present invention. Compared with the original deoxidizer, the oxygen content of molten steel is reduced by 11ppm, and there is no pollution to the site environment. The fluidity of molten steel is good, and the continuous casting nozzle has no nodules.

Embodiment 3

12

[0033] After the above components are pressed into balls, they are used in the RH refining process when smelting IF steel in a steel factory. After adding 0.5kg / t molten steel, the results are as follows:

[0034] The oxygen content of the molten steel is 33ppm after deoxidation by adding the deoxidizer of the present invention. Compared with the original deoxidizer, the oxygen content of molten steel is reduced by 13ppm, and there is no pollution to the site environment. The fluidity of molten steel is good, and the continuous casting nozzle has no nodules.

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
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of metallurgy, and particularly relates to a steel-making aluminum-calcium-iron deoxidizer. The deoxidizer is a ball-shaped composition comprising powder, such as aluminum metal powder, calcium metal powder, iron metal powder and the like. Due to the components, the shapes and sizes of the components, and the shape of the composition formed after balling, the deoxidizer has the characteristics that: the aluminum metal powder, the calcium metal powder and the iron metal powder are pressed into balls, so a preparation method is simple and convenient; the finished products have strong strength, and are directly fed into a head bunker of a steel mill for use; the deoxidizer has high rate of finished products, high reducing capacity, high molten steel deoxidizing capacity, and molten steel total oxygen content lower than that obtained by like deoxidizers; deoxidizing products grow up in a mutual coalescence way, and fast float upwards; the impurity content of the steel is reduced, and simultaneously impurities can be denatured; and the molten steel has high flowability in casting.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and relates to pressing metal aluminum powder, metal calcium powder and metal iron powder into balls. It is added in the tapping process of converter and electric furnace or in the refining process of RH and LF to deoxidize molten steel. Background technique [0002] Metal aluminum as a deep deoxidizer has been widely used in converter or electric furnace smelting and tapping, and its good deoxidation performance has been recognized by everyone. At present, aluminum deoxidizers used include metal aluminum ingots, aluminum iron, etc. Produced Al 2 o 3 A large number of solid inclusions will exist in the molten steel and are not easy to float up. If they are not removed in the subsequent smelting process, it will not only cause nodules in the nozzle during continuous casting, but also reduce the mechanical properties and machinability of the finished steel. In order to eliminate Al from molten...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06B22F1/00B22F3/02
Inventor 刘欣隆孙树森周四明
Owner 上海盛宝冶金科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com