The grade of iron ore is completely evaluated by its utilization value. There are several factors that can evaluate the value of iron ore in industry and commerce, which are described as follows:

(1) Iron content: The higher the iron content in the ore, the better. The higher the iron content, the less the pulse Yue Shi containing impurities; Therefore, the cost wasted on useless impurities in the transportation process can be reduced, and the fuel cost wasted on melting coal gangue in the smelting process can be reduced. Therefore, the iron content in iron ore has a great influence on its value. Generally speaking, ores with an average iron content of more than 50% can be called rich ores and have the value of direct transportation without treatment. If it is lower than this value, it must be concentrated near the mine and then transported to the steel mill as raw materials.