Method for controlling high-phosphorus and high-silicon double-slag model of 150t converter

The invention discloses a 150t converter high-phosphorus and high-silicon double-slag model control method which comprises the following steps: determining a converter double-slag one-pouring control target according to theoretical calculation and actual production regression analysis; the slag-remaining and double-slag operation is adopted, favorable slag melting conditions are created for achieving the one-pouring aim, high-alkalinity and high-TFe slag is provided for double-slag smelting, and efficient dephosphorization in the initial stage of smelting is guaranteed; according to the high-phosphorus and high-silicon molten iron conditions and double-slag process operation characteristics, a double-slag operation control model in the converter production process is established by combining a temperature control system, oxygen supply flow control, lance position control and bottom blowing strength control, and is applied to production practice, and double-slag process efficient dephosphorization control unde