Iron ore is a rock that contains a natural accumulation of various minerals and necessarily, in one or another ratio, there is iron that can be smelted from the ore. The components that make up the ore can be very diverse. Most often, it contains the following minerals: hematite, martite, siderite, magnetite and others. The quantitative content of iron contained in the ore varies, on average it ranges from 16 to 70 %.
Depending on the amount of iron content in the ore, it is divided into several types. Iron ore containing more than 50% iron is called rich. Conventional ores include no less than 25 % and no more than 50% iron. Poor ores have a small iron content, it is only a quarter of the total number of chemical elements included in the total ore content.