Under high speed preheat in blast furnace and gasification in iron-bath for smelting reduction the pyrolysis of pulverized coal injection is the first important stage.
高炉喷吹煤粉和熔融还原铁浴粉煤气化等高速加热条件下，快速热分解是第一步。
2
The CONSTEEL process introduces a new concept in electric steel -making. The process USES the furnace off-gas and fuel to preheat the scrap fed into the furnace.
康斯迪工艺提出了电炉炼钢新概念：即利用电弧炉排出的高温废气对送往炉中的炉料进行连续预热。
3
The exchanger is used to recover the waste heat of the flue gas from enamelling furnace, in order to preheat the air entering the drying oven. Good results in energy saving have been obtained.