PORTALUM A25 is produced from refractory agglomerated super calcined bauxite, with corundum as its main constituent.

Chemical Name: Aluminum Oxide

Chemical Family: Aluminum Oxides

Synonyms: Alumina, Aluminium Oxide, Aluminum Trioxide, Dialuminum Trioxide

Enhanced TDS

Identification & Functionality

Features & Benefits

Product Highlights

Portalum® A 25 is produced from Refractory Agglomerated Super Calcined (RASC) bauxite. The main const tient is the mineral corundum. The standardised quality of Portalum® A 25 is guaranteed by means of an ISO 9001 certified quality management plan. The raw materials and production are closely monitored to ensure a constant quality with regard to its chemical composition and grain size. Portalum® A 25 is used as a raw material for concrete and refractories.

  • Filler for wear resistant coatings
  • Raw material for concrete
  • Raw material for refractories

Applications & Uses

Base Chemicals End Uses

Properties

Physical Properties
ValueUnitsTest Method / Conditions
Particle Size (+25 micron)3%Alpine air jet
Particle Size (D50)10μmLaser diffraction Sympatec
Particle Size (D97)41μmLaser diffraction Sympatec
Moisture Content (at 105°C)0.1%Halogen moisture analyser
Oil Absorption13g/100 gISO 787/5
Hardness8.5-Mohs' scale
Density3.8g/cm³He-pyknometer
Loose Apparent Density1.1g/cm³ISO 787/11
Tapped Apparent Density1.8g/cm³ISO 787/11
Chemical Analysis
ValueUnitsTest Method / Conditions
Aluminum Oxide Content88%wtXRF
Silicon Dioxide Content6.5%wtXRF
Ferric Oxide Content1.8%wtXRF
Titanium Oxide Content2.9%wtXRF
Sodium Oxide Content0%wtXRF
Potassium Oxide Content0%wtXRF
Magnesium Oxide Content0%wtXRF
Calcium Oxide0%wtXRF
Phosphorus Oxide Content0.07%wtXRF
Loss on Ignition (at 1000°C, 1 hour)0.1%wt-

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Packaging Information

PORTALUM A25 is available in Paper Bags (25 kg), Big Bags and Bulk.