Here's a breakdown of why:
Ilmenite:
* Primary source of titanium: Ilmenite is the most important ore for titanium extraction. It contains about 53% titanium dioxide (TiO2).
* Used for pigments, welding electrodes, and ceramics: TiO2 from ilmenite is a crucial ingredient in white pigments, welding electrodes, and various ceramic products.
Rutile:
* Higher TiO2 content: Rutile is richer in TiO2 than ilmenite, typically containing 95% or more. This makes it more valuable.
* Direct use in pigments and other applications: Rutile is used directly in pigments, especially for its high refractive index and excellent color fastness. It is also used in welding electrodes, ceramics, and as a catalyst.
Key Characteristics of Ores:
* Contain valuable elements: Ores are rocks or minerals that contain commercially exploitable amounts of a specific element or compound.
* Economically viable to extract: The concentration of the valuable element and the cost of extraction must be favorable for the ore to be considered economically viable.
* Used for industrial purposes: The extracted elements are used in various industrial processes, manufacturing, and technology.
Therefore, ilmenite and rutile meet all the criteria of being considered ores due to their valuable titanium content and their widespread applications in various industries.
