Iron mining in the United States produced 48 million metric tons of iron ore in 2019. Iron ore was the third highest value metal mined in the United States, after gold and copper. Iron ore was mined from nine active mines and three reclamation operations in Michigan, Minnesota, and Utah. Most of the iron ore was mined in northern Minnesota's Mesabi Range. Net exports were 3.9 million tons. US iron ore made up 2.5 percent of the total mined worldwide inWikipedia · Text under CC BY SA license
Haematite and magnetite are the most commonly found iron ore minerals. The smelting process allows the iron ore to be heated with carbon. The carbon combines with the oxygen and carries it away, leaving behind iron. Blast furnaces are so hot which is why they melt the iron, and drain it off to be poured into moulds to form bars, called ingots.
Production Process of Iron Ore Generally, the processing of iron ore needs several processing stages, including crushing, grinding, ore beneficiation, concentrating, drying, etc. The equipments for iron ore beneficiation is consisted of Jaw Crusher, Ball Mill，Classifier, Magnetic Separator, Flotation Machine, Concentrator Machine and Dryer.
Iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron is a relatively dense metal with a silvery white appearance and distinctive magnetic properties.
The world's resources are dominated by low grade ore, though current world production of iron ore is largely by supply from deposits of high grade ore composed of either rocks of massive hematite or pisolitic goethite. World iron ore production in 2013 was 2.95 billion tonne, with the major producers being China, Australia, and Brazil.