Blast furnace smelting cost calculating and optimizing method

The invention relates to the field of the pig iron smelting, and particularly relates to a blast furnace smelting cost calculating and optimizing method. The blast furnace smelting cost calculating and optimizing method provided by the invention comprises the following steps: calculating the component content, the alkalinity and the unit price of a sinter according to the ratio of sintering materials; calculating the furnace charging grade, the slag amount and the slag component content by using the component content and the unit price of the sinter according to the proportion of blast furnace burdens; and optimizing the component content, the alkalinity and the unit price of the sinter as well as the furnace charging grade, and the slag amount and the slag component content of the blast furnace. The above process is an inverse process of calculating components of the sinter or the slug components and the slug cost. The blast furnace smelting cost calculating and optimizing method provided by the invention can calculate the proportion of low cost iron ore in an inverse mode, and the blast furnace smelting cost calculating and optimizing method is used to guide the production. Moreover, the blast furnace smelting cost calculating and optimizing method can meet the production requirements of a blast furnace and achieve the favorable smelting cost.