Ilmenite is an essential source of titanium and is always mined for titanium dioxide, commonly used in all industries that manufacture pigments, automotive, as well as aeronautical fields. Many conventional and modern processes extract ilmenite from its raw state and transform it into useful products. These processes have been developed over time and incorporated new solutions that make them more environmentally friendly and efficient during extraction. To learn more about the global Ilmenite Industry, including its growing demand and market dynamics, check out report by coherent market insights.
Ilmenite Mining Techniques
Ilmenite is mined mainly as heavy mineral sands, which are concentrated mineral sands found along beaches and inland. The primary methods are dredging and open-pit mining.
Open-pit mining: Open-pit mining involves the removal of overburden, or layers of rock and soil, to expose the ilmenite-rich sands below. Mineral sands are dug out using large excavators or bulldozers and taken to processing facilities. It is an effective method for ilmenite deposits near the surface.
Dredging: In some cases, dredging is used when the ilmenite deposits are located in marshy or submerged areas. This entails the collection of mineral sands from the riverbed or seabed by a large floating vessel, which is provided with a suction system.
Ilmenite Processing Methods:
In several procedures, mined ilmenite undergoes further processes to strip it of titanium dioxide. Such processing methods may depend on the type of ilmenite involved and the kind of final product to be prepared.
Floatation: Floatation is an essential process in processing ilmenite from other ores because it can separate ilmenite from ore. In this floatation, ilmenite is mixed with chemicals and water to form a slurry. Subsequently, by adding air, ilmenite particles stick with air bubbles which move up. They can thus be skimmed off. Such a process happens especially well between ilmenite and other ores like rutile and zircon.
Magnetic Separation of Ilmenite: Ilmenite is magnetic in nature. This property makes it a good candidate for separation through magnets. Strong magnets are used in the process to separate ilmenite from the nonmagnetic material, feldspar, and quartz. The magnetic field will attract the particles of ilmenite leaving waste materials behind.
Smelting: Smelting is conducted on ilmenite at high temperatures to give titanium metal or titanium dioxide. During the process of smelting, the mixture of ilmenite with a reducing agent, such as charcoal, is heated in a furnace. This method of producing titanium dioxide undergoes further treatment and is applied in paints, coatings, and polymers.
Ilmenite Mining Innovations
Hydrometallurgical Techniques: New hydrometallurgical processes are also being developed as a way of more efficiently leaching titanium out of ilmenite. Aqueous leaching is expected to replace higher energy-intensive techniques such as smelting and could become an alternative process with lower energy requirements and fewer emissions.
Automation and Digitalization: Advances are being made more and more using automation and digitization in mining ilmenite. Automated systems for drilling and transportation and further processing increase yields while saving cost on labor forces. In this regard, technologies such as digital predictive maintenance optimize operations online and encourage decrease in costly expense of expensive unproductive downtime combined with resource optimization.
Ilmenite mining and processing have improved greatly both conventional and modern methods operating in harmony with each other to meet growing industrial needs. Principal extraction and upgrading processes remain flotation, magnetic separation, and smelting. However, the latest developments with regard to technology and sustainability are bringing even more effective and environment-friendly methods into use.
