The invention provides a calculation method for controlling the
smelting cost of an electric furnace. The method comprises the following steps of: according to requirements of target components of a finished product,
scrap steel
bulk density,
scrap steel element
oxidation rate,
alloy element yield,
metal rate of
metal materials and
scrap steel
bulk density, a finished product target component constraint equation, a scrap steel target
bulk density constraint equation, a scrap steel and
alloy quality constraint equation and an optimized batching target function are constructed, a
linear programming mathematical model is constructed according to the equations, and the addition amount of scrap steel and
alloy when the
smelting cost is minimum are obtained through calculation. According to themethod, factors such as the burning
loss rate of elements in the scrap steel, the alloy yield, the scrap steel density and the
metal rate of metal raw materials in the
smelting process are comprehensively considered; meanwhile, factor coefficients of different scrap steel types to
electric energy consumption are introduced into an optimized batching objective function of the smelting cost, a comprehensive optimized batching model of the total cost of scrap steel, alloy and
electric energy consumption is constructed, better applicability is achieved for a multi-element
raw material structure, and the smelting cost of the electric furnace is effectively reduced.