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Sodium aluminate is an inorganic chemical that is used as an effective source of aluminium hydroxide for many industrial and technical applications. Pure sodium aluminate ( anhydrous ) is a white crystalline solid having a formula variously given as NaAlO 2 , NaAl(OH) 4 ( hydrated ), [ 3 ] Na 2 O·Al 2 O 3 , or Na 2 Al 2 O 4 .
A number of aluminate oxyanions are known: The simplest is the approximately tetrahedral AlO 5− 4 found in the compound Na 5 AlO 4, [2] framework AlO − 2 ions in anhydrous sodium aluminate NaAlO 2 [3] and monocalcium aluminate, CaAl 2 O 4 made up of corner-sharing {AlO 4} tetrahedra. [4] A ring anion, the cyclic Al 6 O 18−
Sodium aluminosilicate refers to compounds which contain sodium, aluminium, silicon and oxygen, and which may also contain water. These include synthetic amorphous sodium aluminosilicate, a few naturally occurring minerals and synthetic zeolites. Synthetic amorphous sodium aluminosilicate is widely used as a food additive, E 554.
Sodium hexafluoroaluminate is an inorganic compound with formula Na 3 Al F 6. This white solid, discovered in 1799 by Peder Christian Abildgaard (1740–1801), [4] [5] occurs naturally as the mineral cryolite and is used extensively in the industrial production of aluminium. The compound is the sodium (Na +) salt of the hexafluoroaluminate (AlF ...
The first stage is the calcination of the bauxite at 1200 °C with sodium carbonate and coke. The alumina is converted in sodium aluminate. Iron oxide remains unchanged and silica forms a polysilicate. In the second stage sodium hydroxide solution is added, which dissolves the sodium aluminate, leaving the impurities as a solid residue. The ...
Sodium aluminate Sodium aluminate: Na 2 Al 2 O 4: Used in conjunction with alum to control pH Sodium bisulfite Sodium bisulfite: NaHSO 3: An acid type cooking liquor chemical component sometimes used to neutralized residual chlorine in the pulp during the bleaching process. Sodium chlorate Sodium chlorate: NaClO 3: Used to generate Chlorine ...
Sodium aluminate; Strontium aluminate; T. Tricalcium aluminate; Y. Ye'elimite This page was last edited on 2 November 2023, at 18:51 (UTC). Text is available under ...
The Bayer process is the principal industrial means of refining bauxite to produce alumina (aluminium oxide) and was developed by Carl Josef Bayer.Bauxite, the most important ore of aluminium, contains only 30–60% aluminium oxide (Al 2 O 3), the rest being a mixture of silica, various iron oxides, and titanium dioxide. [1]