Iron ore: it is mainly used in the iron and steel industry to smelt pig iron with different carbon content (carbon content is generally more than 2%) and steel (carbon content is generally less than 2%). The varieties of iron ore include raw meal and clinker. The raw meal mainly includes lump ore, coarse powder and refined powder. The clinker mainly includes pellets and hot pressed blocks. It can provide various grades of iron ore from Australia, India, Brazil, South Africa, Russia, Ukraine, Venezuela, Indonesia, Iran, the United States and other countries.