According to the different subsequent smelting processes, vanadium-titanium iron concentrate pellets determine their respective application fields. Vanadium-titanium iron concentrate acid oxidation pellets are mainly used in blast furnace smelting, blast furnace burden protection and gas-based shaft furnace reduction, but vanadium-titanium iron concentrate carbon pellets are mainly used in coal-based direct reduction.

The tunnel kiln process is relatively simple, the technical content is low, and the raw materials, reducing agents, and fuels are easy to solve. The process has strong practicability, small early investment, and is suitable for small-scale production. It is a metallurgical reduction production process commonly used in the powder metallurgy industry.

Gas-based direct reduction iron (DRI), which has been commercialized, is made from natural gas or coal. In recent years, with the global attention to carbon dioxide emissions, active research has been carried out on the low carbonization of DRI processes, mainly carbon dioxide removal in existing commercial DRI processes or the use of renewable energy to produce reducing gas.

This article talks about the material and binder selection, equipment, testing method of sponge iron power. The proper parameters are discussed in this paper.

China is rich in iron ore resources, but most of them are low-grade ores, including many hematite, limonite, siderite, etc., which are characterized by low iron grade, fine crystal size, compact distribution with gangue, and difficult dissociation of monomers. Therefore, it is difficult to use conventional beneficiation methods for separation and cannot be reasonably utilized. With the rapid development of iron and steel industry, there are fewer and fewer rich ores available for utilization. Therefore, it is of great significance to effectively develop and utilize low-grade iron ore and complex symbiotic ores.