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Altech Chemicals, Company Presentation - June 2018

Our Vision

World leading producer of high purity alumina (HPA)
4,500 tonnes pa

Sapphire Gemstone

• Sapphire gemstone
• Natural form of high purity alumina (HPA) Al2O3
• Formed by mother nature like diamonds
• Colour from impurities
• Nearly as hard as diamond (Mohs 9)

What is HPA?

• Purified alumina (Al2O3)
• 99.99% (4N) purity or greater
• Smelter Grade Alumina (SGA) ~ 99.5% (5,000ppm impurities, mainly sodium)
• Bayer Process uses sodium hydroxide (NaOH)
• Sodium impurity is a problem for sapphire and lithium batteries


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