Andromeda Metals

High purity alumina: its properties, uses in LEDs, batteries and semiconductors, and Andromeda's low-carbon production process.

High-Purity Alumina (HPA)

Andromeda Metals (ASX:ADN) | Industrial and critical minerals

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HPA is a premium industrial material valued for its superior qualities:

Flexibility in form and crystalline structure

Recognised as an Australian critical mineral, HPA is essential in developing technologies and supports efforts towards a lower-carbon future.

Using its proprietary process, Andromeda has developed a commercial solution to refining HPA from kaolin.

This success follows more than 7 years of investigation, research, and metallurgical testing by Andromeda, culminating in the development of its novel process flowsheet, for which a Patent Cooperation Treaty (PCT) application has been filed.

With this, Andromeda has the potential to position South Australia as a leading supplier of high-quality HPA for expanding global markets.

Andromeda’s kaolin is an ideal feedstock for the production of High Purity Alumina (HPA).

Andromeda seeks to commercialise its low-cost, low-carbon solution for producing HPA in response to increasing global demand, particularly driven by applications in LEDs, wearable technology, and electrification.

Current global production methods for HPA are carbon-intensive and unable to meet the demand growth. Presently 88% of current global HPA production is made from the process of oxidising aluminium (Al) metal (Alkoxide)*.

This process is carbon intensive, emitting 12.44 tonnes of CO₂ per tonne of HPA and its production is anticipated to fall below market growth demand^. Drivers of the cost of this HPA include the global increase in Al metal price and the high energy cost required for manufacturing.

To address these challenges, Andromeda has developed an innovative process flow sheet for producing HPA from kaolin, specifically from the Great White Kaolin resource located in South Australia’s Eyre Peninsula. Kaolinite from Andromeda’s Great White Project is an exceptionally pure aluminosilicate Al₂Si₂O₅(OH)₄ with more than 37% contained Al₂O₃.

This strongly positions Andromeda to meet rising global demand for HPA with a reliable, low-cost, high-quality HPA product.

Andromeda partnered with leading metallurgists and chemists to develop an innovative solution. This has resulted in a novel process flowsheet that employs established and validated metallurgical techniques to produce HPA with greater safety, energy efficiency and at a lower cost compared to conventional methods.

This flowsheet addresses several inherent problems associated with other published processes for producing HPA, with the potential to produce HPA at lower-cost and lower-carbon intensity than other established processes.

High-Purity Alumina (HPA)

Growing end-user markets for HPA

LED Lighting

Lithium-Ion Batteries

Synthetic Sapphire Glass

Semiconductors