Blast Furnace - an overview | ScienceDirect Topics
The blast furnace cannot operate without coke, but since it is the most expensive feed material used in the blast furnace iron-making process, there has always been a demand to minimize its use. In the furnace, coke supplies heat energy while physically maintaining the permeability of the blast furnace bed.
Blast Furnace Process - an overview | ScienceDirect Topics
This blast furnace process is the oldest but still the main method to produce large quantities of molten raw iron, hot metal, and for steel making and foundry purposes. The early blast furnace had about a 6 m × 6 m square formed stone foundation and 6–8 m high walls of stone blocks. The upper half of the walls could be also made of timber.
Blast Furnace - an overview | ScienceDirect Topics
These products include air-cooled blast furnace slag (ACBFS), expanded or foamed slag, pelletized slag, and granulated blast furnace slag. 8.1.1.1 Air-Cooled Blast Furnace Slag. If the liquid slag is poured into beds and slowly cooled under ambient conditions, a crystalline structure is formed, and a hard, lump slag is produced, which can ...
Blast Furnace - an overview | ScienceDirect Topics
The blast furnace process has auxiliary equipment associated with it. This auxiliary equipment and the gaseous pathways inside a blast furnace process are shown in Figure 2. The blast furnace process can be briefly described as follows. Iron oxides, flux agents, and metallurgical coke are added to a skip car at the stock house.
Blast Furnace Ironmaking - an overview | ScienceDirect Topics
2020年7月15日 · The oxygen blast furnace process flow chart is shown in Fig. 19 (Zhang, H.J. et al., 2015). The current problem of oxygen blast furnace is the uneven distribution of recycled gas, which affects the utilization of recycled gas. This is caused by the collision on between the recovered gas injected into the blast furnace and the gas from the furnace.
Blast Furnace Operation - an overview | ScienceDirect Topics
The blast furnace technology is still the main ironmaking route with a current global share of 70%. Reduction of fossil carbon consumption and CO 2 emissions in blast furnace operations are essential for the decarbonization of steelmaking. Potential solutions such as introducing renewable carbon-based materials (torrefied biomass, charcoal ...
Blast Furnace Ironmaking – A View on Future Developments
2017年1月1日 · The principle of how blast furnace stoves could be converted from air-fuel to oxy- fuel combustion is illustrated in the schematic of Figure 2. It can be seen that combustion air is replaced by a hot synthetic oxidant comprising a mixture of flue gas and industrial oxygen.
Failure mechanisms of blast furnace tuyeres and mitigation …
2025年1月1日 · Iron blast furnace is a gigantic counter-current reactor and contributes to the majority of ∼1.9 billion tonnes of steel produced annually. Among various components of the blast furnace, tuyeres made of high-purity copper with protective coatings are the most critical in nature from the viewpoint of smooth furnace operation without interruptions.
Blast Furnace Ironmaking - ScienceDirect
Blast furnace iron has limited engineering applications. It is mainly for use for iron castings, and for abrasion resistance and heat-transfer applications. Most blast furnace iron is the raw material for oxygen steelmaking, where the molten iron is refined to produce the world’s most popular metal for engineering applications—rolled steel.
Transient model-based operation guidance on blast furnace
2019年1月1日 · A blast furnace in steel making industry plays the role of smelting and reducing the iron ore, and it consumes huge energy. Fig. 1 shows a schematic view of a blast furnace. The heat indices of the furnace, such as the hot metal temperature (HMT) and silicon content of hot metal, are controlled by manipulating the temperature of hot blast ...