The height of the furnace structure of a 2000m3 blast furnace project of an iron and steel company is 36.780m, the maximum diameter is 14.2m, and the minimum diameter is 3.1m. It is divided into shell bottom plate, hearth section 1, hearth section 2, taphole section, hearth section 3, tuyere section, hearth section 4, bosh section, waist section, shaft section 1, shaft section 2, shaft section 3, shaft section 4, furnace