Calcined Bauxite

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Description

GNPGraystar offers Guyanese bauxite. Guyanese bauxite is the most refractory bauxite available in the world due to its higher alumina content and lower alkali and impurit content. Replacing Chinese bauxite with Guyanese bauxite results in a chemistry/performance upgrade in refractory mixes. In mortars and plastics, this bauxite will extend the shelf life over chinese bauxite considerably because it is less reactive in acid and phosphatebonded refractories.


The mineralogy of Guyanese bauxite is alpha alumina and mullite, so there’s no shrinkage or cracking when exposed to hot metal. This product actually has slight expansion at high temperatures versus the shrinkage in Chinese bauxite (containing alpha alumina and glass).


As a ceramic ball-milled product, this may also be used to substitute pricier calcined alumina material in bauxite and mullite mixes.

Diese Materialdaten wurden von GNPGraystar Specialty Materials zur Verfügung gestellt

Alle Daten beziehen sich auf Raumtemperatur soweit nicht anderweitig spezifiziert. SI Einheiten werden verwendt soweit nicht anderweitig spezifiziert.
Äquivalente Standards sind ähnlich zu einem oder mehreren Standards die der Anbieter angegeben hat. Manche äquivalente Standards können strikter sein oder außerhalb der Bedingungen des ursprünglichen Standards.

Ashby charts

Eigenschaften

Allgemein

PropertyValueComment

Loss on Ignition

0.5 %

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max.

Schüttdichte

3.1 - 3.2 g/cm³

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ASTM C357

Water content

0.12 %

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0.5 %

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Chemical properties

PropertyValueComment

Aluminium

87.5 %

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min. Al₂O₃

Eisen

1.75

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max. Fe₂O₃

Silizium

7.5

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max. SiO₂

Titan

3.5

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max. TiO₂

Technological properties

Property
Other

See picture part of the datasheet for available sizing