Extractive metallurgy and HCl sparging
SiQAL is developing and implementing a novel process based on HCl sparging and separative metallurgy to extract high-purity materials for tech applications. In particular, we are focusing on large volume waste streams such as generated by the aluminum industry. Dross or red mud contain a number of high-value elements and trace impurities such as Gallium or rare earths metals.
We demonstrated our process by upgrading aluminum dross to high purity alumina (HPA). HPA is the feedstock for synthetic sapphire crystals used in LEDs. It is used in variety of other applications in the tech-industry.