Simulation on Decarburization and Inclusion Removal Process in the Ruhrstahl–Heraeus (RH) Process with Ladle Bottom Blowing

Geng, Duyan; Jinxing, Zheng; Wang, Kai; Ping, Wang; Liang, Ruquan; Liu, Haitao; Lei, Hong; He, Jicheng

doi:10.1007/s11663-015-0314-1

Cited by 56 publications

(46 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Several investigations have been carried out to control the inclusions in steel, and the main control methods include the elimination and the modification of inclusions. The elimination of inclusions in steel is the use of appropriate technology in the steelmaking process to remove inclusions from the liquid steel, and the main technologies include gas stirring [5][6][7], electromagnetic purification [8,9], slag washing [10], and filter technique [11]. The methods of inclusions modification include calcium (Ca) treatment [12][13][14][15], magnesium (Mg) treatment [16][17][18], calcium-magnesium treatment [19,20], and so on.…”

Section: Introductionmentioning

confidence: 99%

Effect of adding yttrium on precipitation behaviors of inclusions in E690 ultra high strength offshore platform steel

Yang

et al. 2020

High Temperature Materials and Processes

View full text Add to dashboard Cite

The mechanism of inclusions precipitation of the E690 offshore platform steel, with and without addition of yttrium, was studied using the thermodynamic calculation method. The results show that in the E690 steel in the absence of yttrium, the MnS inclusions were precipitated in the liquid phase at the solidification front. By adding the yttrium, MnS inclusions were replaced by spindle and spherical yttrium-containing oxide and sulfide complex inclusions, and the precipitation sequence of yttrium-containing inclusions in the liquid steel was Y2O3, Y2O2S, and YS. However, Y2S3 inclusions cannot be precipitated in the liquid steel under the experimental conditions. It was also found that Al2O3 inclusions can be formed in the liquid steel with and without addition of yttrium. The thermodynamic calculation results are in accordance with the experimental results.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of adding yttrium on precipitation behaviors of inclusions in E690 ultra high strength offshore platform steel

Yang

et al. 2020

High Temperature Materials and Processes

View full text Add to dashboard Cite

show abstract

“…However, the circulation rate will reach a saturated value with the gas flow rate increasing [14,36]. From equipment improvement view, many investigations have proved that a larger snorkel sectional area [24,26,29,38]blowing from the bottom of the vacuum chamber [15] or ladle [39] would favor to optimize the fluid flow of RH. Recently, many researchers have tried to increase the refining efficiency by using single-leg [12,28,31,40], multilegs [38,41], and magnetic field [42] imposed around the up-leg.…”

Section: Introductionmentioning

confidence: 99%

Physical Simulation on Molten Steel Flow Characteristics of RH Vacuum Chamber with Arched Snorkels

Ren

Luo

Meng

et al. 2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

The RH vacuum refining technology is a vitally powerful method of producing clean steel. The inner diameter of traditional circular snorkel is very difficult to be increased owing to the metallurgical refractory thickness around the snorkels and the limitation of the area under the vacuum chamber, limiting the increase in refining efficiency. In order to improve the refining efficiency of the RH reactor, a new designed RH degasser with an optimized arched snorkel is established. This design replaces the traditional two circular snorkels structure with the two arched snorkels and greatly enhances the cross-sectional area of snorkel. In this study, the flow characteristics of this new type RH were studied and analyzed by establishing a 1 : 5.5 physical model of RH with arched snorkels. Results show that the circulation flow rate of RH with arched snorkels can increase by 100% ∼ 180% and the mixing time approximately decreases by 35% compared with RH with circular snorkels under actual production conditions. The circulation flow rate of RH with arched snorkels continues to increase obviously when gas flow rate exceeds the saturated value of RH with circular snorkels. The RH with arched snorkels can increase the refining efficiency significantly and has important application prospect.

show abstract

“…It is conducive to the removal of inclusions and the improvement of steel quality. erefore, removal of inclusions in steel in RH refining process has been the focus of metallurgical research for several years [5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Experimental Investigation on Inclusion‐Argon‐Liquid Steel Phenomenon in RH Refining of High‐Manganese and High‐Aluminum Steel

Chen

Liu

Han

et al. 2019

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

Simulation on Decarburization and Inclusion Removal Process in the Ruhrstahl–Heraeus (RH) Process with Ladle Bottom Blowing

Cited by 56 publications

References 36 publications

Effect of adding yttrium on precipitation behaviors of inclusions in E690 ultra high strength offshore platform steel

Effect of adding yttrium on precipitation behaviors of inclusions in E690 ultra high strength offshore platform steel

Physical Simulation on Molten Steel Flow Characteristics of RH Vacuum Chamber with Arched Snorkels

Numerical Simulation and Experimental Investigation on Inclusion‐Argon‐Liquid Steel Phenomenon in RH Refining of High‐Manganese and High‐Aluminum Steel

Contact Info

Product

Resources

About