Apparatus for estimating phosphorus concentration in liquid steel, statistical model building apparatus, method for estimating phosphorus concentration in molten steel, statistical model construction method and program

摘要

The concentration of phosphorus in molten steel is estimated accurately by the operation by the MRC method.Hot metal data on hot metal melted in converterA dephosphorization rate constant calculation unit which calculates the estimated value of the dephosphorization rate constant of the hot metal by using a statistical model with the data extracted from the operation data obtained during the blowing process as an explanatory variable, andA phosphorus concentration estimator is provided which estimates the phosphorus concentration in the molten steel during the blowing process based on the estimate of the phosphorus concentration and the dephosphorization rate constant prior to blowing the hot metal.Blowing isPretreatment process including dephosphorization of hot metal andIntermediate discharge process carried out after the pretreatment step andThe decarburization process is carried out after the intermediate waste water treatment step.The explanatory variable isContains at least one data that represents the amount of slag discharged from the converter in an intermediate dump processAn apparatus for estimating phosphorus concentration in molten steel is provided.Diagram