alumina

IPA: ʌɫˈumʌnʌ

Aluminum oxide, especially when used in mining, material sciences or ceramics, a refractory solid compound.

Examples of "alumina" in Sentences

Alcoa is also expected to benefit from the rise in alumina, a key raw material that is used to make aluminum.
Bauxite ore is refined into a white powder called alumina, which in turn makes the aluminum used in the world's cars and planes.
In both cases, much of the pollution comes from the waste left after alumina, which is used to manufacture aluminum, is extracted from bauxite ore.
"The primary reason we see gradually declining prices is the 60% increase in Chinese alumina capacity to about 22% of available world alumina supply," they wrote.
The suit, which sought monetary damages, accused Alcoa and Mr. Dahdaleh of conspiring to overcharge Alba for its purchase of thousands of tons of alumina, which is used to make aluminum.
Bauxite is refined to produce alumina, which is then smelted to produce aluminum, a metal in great demand to meet the needs of India and China's booming construction and automobile industries.
The suit accuses Alcoa and its agent—Canadian businessman Victor Dahdaleh —of conspiring to overcharge Alba by hundreds of millions of dollars for the purchase of thousands of tons of alumina, which is used to make aluminum.
A protective wall of dolomite and earth – 610 yards (620 meters) long, with an average height of nearly 9 feet (2.7 meters) – has been built in Kolontar to shield the area from further spills of the red sludge, a highly caustic waste produced when making alumina, which is used to make aluminum.