What are the natural types of iron ore

Iron ore is an important mineral resource that is widely used in metallurgy, construction, manufacturing and other industries. According to its formation and composition characteristics, iron ore types can be divided into two categories: natural types and industrial types. Some common natural types of iron ore will be introduced below.

The natural type is the ore cold column mineral combination according to the material components, structure and structure of the ore; the industrial type is the ore type according to the different ore selection and metallurgy methods and processes in the industry.

Hematite (Hematite): Hematite is one of the most common iron ores and the most important iron ore mineral. Its chemical composition is ferrous oxide (Fe2O3), which is often red, brownish red or black. Hematite has a high iron content, generally reaching over 60%. Hematite is mainly used for the production of iron and the manufacture of steel.

Magnetite (Magnetite): Magnetite is a magnetic iron ore, the chemical composition of which is ferrous oxide (Fe3O4). Magnetite is often black in color and has strong magnetic properties. It has a high iron content, usually between 60% and 70%. Magnetite is widely used in iron production, metallurgy and the production of magnetic materials.

Limonite (Limonite): Limonite is an iron ore containing hydrous iron oxides. Limonite is usually brown or yellowish-brown in color. It has a low iron content, usually between 30% and 40%. Limonite is mainly used in the production of ferroalloys and dyes.

Siderite: Siderite is an iron ore containing carbonates, the main component of which is iron carbonate. The color of siderite is usually gray or yellowish brown. Its iron content is low, usually below 30%. Iron amphibole has relatively few uses and is mainly used to extract iron and make ore pigments.

Overview of natural type iron ores:

(1) According to the type of iron minerals, it is divided into magnetite, hematite, pseudo (semi-pseudo) hematite, vanadium-titanium magnetite, limonite, rhodochrosite and mixed ores composed of two or more iron-containing minerals.

(2) According to the harmful impurities (S, P, Cu, Pb, Zn, As, Sn, F) into high sulfur iron ore, high phosphorus iron ore, etc.

(3) According to the structural structure of the ore can be divided into leached ore, net vein leached ore, striped ore, dense block ore, breccia ore and trembling, bean, kidney, honeycomb, powder and earthy ore.

(4) According to the vein minerals, it can be divided into quartz, amphibole, pyroxene, plagioclase, sericite chlorite, silica, actinolite, serpentine, iron dolomite and jasper iron ores.