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3D dynamic simulation and optimization of mammoth desiliconization converter for high-quality stainless steel

Journal Article


Abstract


  • A three-dimensional dynamic simulation model of the molten iron flow field was

    presented in the paper with Fluent simulation software. Different operating parameters

    combinations, including different oxygen lance locations, oxygen pressures and oxygen flows,

    different arrangements of bottom blowing holes, hole sizes, nitrogen pressures and nitrogen flows

    were studied. It is shown that the relative optimum value of the distance from top-blow gun to the

    molten iron surface is 1500 mm, and bottom blowing hole diameter is 20mm, there is no significant

    difference of the blowing effects found when comparing single ring arrangement with double rings

    arrangement of 8 bottom blowing holes with only bottom-blow, and the bottom-blow of inner ring

    is disturbed by top-blow when top and bottom combined blow. Optimized design results have been

    applied to the design and manufacture of the actual converter, the converter has been successfully

    used in plant. The actual production results indicate that the desiliconization precision can reach

    0.05%, the content of Cr2O3 in the slag after reduction can be less than 2%, better than the technical

    requirements of 3%, and improve the recovery rate of the chromium. Compared with traditional

    desiliconization method by iron gutter and iron ladle, desiliconization by converter does not use

    compression residue agents and reduce the amount of desiliconization agents and slag, and improve

    the desiliconization efficiency and productivity.

Publication Date


  • 2013

Citation


  • Zhang, D. & Jiang, Z. (2013). 3D dynamic simulation and optimization of mammoth desiliconization converter for high-quality stainless steel. Advanced Materials Research, 787 454-460.

Scopus Eid


  • 2-s2.0-84886236750

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1386

Number Of Pages


  • 6

Start Page


  • 454

End Page


  • 460

Volume


  • 787

Abstract


  • A three-dimensional dynamic simulation model of the molten iron flow field was

    presented in the paper with Fluent simulation software. Different operating parameters

    combinations, including different oxygen lance locations, oxygen pressures and oxygen flows,

    different arrangements of bottom blowing holes, hole sizes, nitrogen pressures and nitrogen flows

    were studied. It is shown that the relative optimum value of the distance from top-blow gun to the

    molten iron surface is 1500 mm, and bottom blowing hole diameter is 20mm, there is no significant

    difference of the blowing effects found when comparing single ring arrangement with double rings

    arrangement of 8 bottom blowing holes with only bottom-blow, and the bottom-blow of inner ring

    is disturbed by top-blow when top and bottom combined blow. Optimized design results have been

    applied to the design and manufacture of the actual converter, the converter has been successfully

    used in plant. The actual production results indicate that the desiliconization precision can reach

    0.05%, the content of Cr2O3 in the slag after reduction can be less than 2%, better than the technical

    requirements of 3%, and improve the recovery rate of the chromium. Compared with traditional

    desiliconization method by iron gutter and iron ladle, desiliconization by converter does not use

    compression residue agents and reduce the amount of desiliconization agents and slag, and improve

    the desiliconization efficiency and productivity.

Publication Date


  • 2013

Citation


  • Zhang, D. & Jiang, Z. (2013). 3D dynamic simulation and optimization of mammoth desiliconization converter for high-quality stainless steel. Advanced Materials Research, 787 454-460.

Scopus Eid


  • 2-s2.0-84886236750

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1386

Number Of Pages


  • 6

Start Page


  • 454

End Page


  • 460

Volume


  • 787