Alumina, or aluminium oxide (Al2O3), is typically produced through the processing of aluminium-bearing minerals found in bauxite. These minerals include gibbsite (γ-Al(OH)3), bӧhmite  (γ-AlO(OH)) and diaspore (α-ALO(OH)). Australia produces approximately 28% of the world’s Bauxite and approximately 16% of the world’s alumina (USGS 2018). To date the most widely used process for alumina extraction is the Bayer process. The Bayer process involves a number of key steps including: milling, digestion, desilication, clarification, precipitation and calcination. The refined alumina product from the Bayer process is a dry, pure white, sand-like material.

Industries primarily use alumina produced through the Bayer process for the production of aluminium via the Hall-Héroult process. Additionally, it finds frequent use in refractories, ceramics, polishing, and abrasive applications.

Range of Alumina Capabilities:

  • Metallurgical testplans
  • Project management
  • Metallurgical summary reports
  • Flowsheets
  • Mass balances
  • P&IDs
  • Vendor evaluation
  • Project implementation
  • Engineering studies
  • Environmental studies
  • Process description/Equipment lists
  • Detailed design

Please send through your enquiry today via email to and we will call you to discuss your project.

Alumina Project Experience:

Alcoa AluminaVariousVarious projects including characterising different bauxite ore types, mill surveys, specific surveys, various testwork
Worsley AluminaConfidentialDue diligence when Reynolds sold their interest including digestion studies and efficiency upgrade
Australian BauxiteTaralga ProjectTestwork and consulting for Direct Shipping Ore including washing trials to meet specification
Lindian Resources LtdGuinea Bauxite ProjectAssistance with feasibility study
Aughinish AluminaConfidentialStudies and process improvements
ConfidentialConfidentialExpert witness – Issue over a Alumina Smelter in Canada
Attended supreme court in Melbourne on behalf of our client
High Purity AluminaConfidentialScoping Study
High Purity AluminaConfidentialTestwork
Snowden GroupWest Kalimantan Bauxite ProjectMetallurgical Testwork Review
Snowden GroupWest Kalimantan Bauxite ProjectBauxite Characteristics Consulting

Sharing Our Knowledge:

Mineral Processing Course

We offer a course that gives participants in-depth knowledge of the broader aspects of mineral processing. A wide range of topics is covered and participants will gain an understanding of the fundamental unit processes, equipment and flowsheets as well as physical and chemical mineral processing principles. Read more about our course here.