Design of Lower Shaft and Hearth Bottom for Long Campaign Blast Furnace

A model for calculating the temperature distribution of the stave and the hearth bottom and a mathematical model of temperature distribution of lower shaft cooler and hearth bottom of blast furnace were built. The computational software of the temperature field was developed by using C++ language in VC++ integrated environment. The calculation results show that the formation of the protection shell can be achieved by optimizing the parameters for designing the stave and the hearth bottom. The software has been used to design blast furnace of some large companies in China.