Ironmaking ingredient calculation method based on residual CaO content of ton iron

The invention discloses an ironmaking ingredient calculation method based on the content of residual CaO in ton iron, and relates to the field of ironmaking processes. The method has the beneficial effects that a correlation formula between calcium oxide and silicon dioxide in furnace access raw materials and calcium oxide and silicon dioxide in fuel and the silicon content of molten iron can be evolved and deduced according to a calculation rule of the basicity of the furnace slag under the condition that the basicity range of the furnace slag required by smelting is determined, and based on existing smelting conditions, the content of calcium oxide and silicon dioxide in the furnace access raw materials and the content of calcium oxide and silicon dioxide in fuel can be calculated. The residual CaO content value of each ton of iron in the current stage is calculated as an empirical reference constant for ingredient calculation, and the empirical constant is utilized to simply calculate how to adjust to meet