根据炼铁技术最新发展，提出了综合各种炼铁过程（如高炉、非高炉以及各种熔融还原工艺）的热平衡新的表示方法在此基础上，以ＲＩＳＴ操作线为基本思路，建立了新的炼铁过程操作线图（ＩＰＤ，ｉｒｏｎｍａｋｉｎｇ ｐｒｏｃｅｓｓ ｄｉａｇｒａｍ）．这一新线图可以直观并形象地分析各种炼铁过程的物质转移过程和能耗，有助于冶金工作者分析和选择各种炼铁过程。 According to the latest development of ironmaking technology, a new method to represent the heat balance of various ironmaking processes (such as blast furnace, non-blast furnace and various smelting reduction processes) is put forward. Based on this, taking the RIST operating line as the basic idea and establishing a new Ironmaking process diagram (IPD). This new line diagram enables intuitive and visual analysis of material transfer processes and energy consumption for various iron making processes and helps metallurgists analyze and select various ironmaking processes.