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Related to alumina: Activated alumina


(in pharmaceuticals) aluminum hydroxide.

a·lu·mi·num ox·ide

a compound of aluminum used as an abrasive, as a refractory, and in chromatography.
Synonym(s): alumina


/alu·mi·na/ (ah-loo´mĭ-nah)
2. (in pharmaceuticals) aluminum hydroxide.

hydrated alumina  aluminum hydroxide.


2 (in pharmaceuticals) aluminum hydroxide.


One of the strongest white ceramic materials used in dental practice; an abrasive employed to strengthen porcelain or as a substructure for all ceramic crowns and bridges.
[L. alumen, alum]

alumina (əlōōminə),

n aluminum oxide, an abrasive sometimes used as a polishing agent.


aluminum oxide.
References in periodicals archive ?
Alumina and its' subsidiaries strategy is to invest worldwide in bauxite mining, alumina refining and selected aluminum smelting operations through its 40% ownership of Alcoa World Alumina & Chemicals (AWAC), the world's largest alumina business.
High alumina ceramics industry import/export consumption, supply and demand figures and cost price and production value gross margins are also provided.
Standard grinds of alumina trihydrate between 2 and 30 microns.
Typically, chrome alumina refractories form a solid solution of chrome oxide and alumina with the following formulation [(Al,Cr).
The magnesia reacts with alumina to form a spinel phase which results in a tougher mineral that withstands the forces associated with high pressure grinding.
This is an example of the coexistence of fluxing of the silica bond in the alumina lining and the spalling reaction that results from the spinel formation.
Chapter Two Alumina Manufacturing Technology and Process
Alumina, commonly known as aluminum oxide (Al2O3), is primarily used as a feedstock for the fabrication of metallic aluminum and is known as Smelter Grade Alumina (SGA).
ACM-MH 93 magnesium hydroxide serves as a flame-retardant filler, releasing water of hydration like alumina trihydrate, but is able to withstand processing temperatures to 625 F vs.
In addition to the previously mentioned benefits, management found that the freer-cutting zirconia alumina wheel caused less operator fatigue and less worry that the wheel would break.
com/research/be9d77af/bauxite_and_alumin) has announced the addition of the "Bauxite and Alumina Market Review" report to their offering.
com adds the following new market research reports on China's Special Steel and Alumina industries: