Slag Engineering

  • Customer’s problem

    Customer found it difficult to maintain foaminess during the entire heat. Steel melt shop operators tried to increase lime/ dolomitic lime and carbon injection without much success. 

  • Diagnostics
    • Power interruption for temperature, sampling and during was one of the reasons to suppress foamy slag
    • Burner profile needed optimization
    • The time taken to lift electrodes and roof was high

    After a detailed investigation, we found serious issues with the quality and the timing of the carbon injection; the lime and dolomitic lime addition balance and timing. After implementing the recommended process changes, the customer reported positive results. 

  • Actions
    • Burner profile optimized
    • Lime and dolomitic lime addition adjusted
    • Carbon quality issues addressed
    • Power interruption practice stopped and electrode /roof lifting pressure adjusted.