National mineral research organisation Mintek’s innovative Impril process technology has achieved crucial efficiencies in titanium production, the organisation reports.

Titanium oxide (TiO₂) is a key ingredient in creating white pigments. Its versatility makes it an essential compound in many industries, from paints and plastics to cosmetics, paper and textiles.

Mintek’s progress in technology development is helping to ensure its continued use in modern applications. 

“Our Impril process can play a significant role in the advancement of the titanium industry globally. It reflects Mintek’s commitment to driving technological innovations that enhance mineral recovery, increase efficiency and promote sustainability, supporting the industrialisation and growth of the mining and metals sector in South Africa.

”At the same time, Mintek’s commitment to innovation not only advances industry practices but also underscores a proactive approach in mitigating the environmental impact, marking a significant stride towards a greener and more resilient future,” Mintek CEO Dr Molefi Motuku says.

Mintek conducted extensive research in titanium ore processing, leading to the development of the Impril process, which involves the manufacturing and pretreatment of carbon-based ilmenite pellets in hydrogen-enriched synthesis gas, followed by smelting in an electric arc furnace.

The Impril process offers numerous advantages over conventional ilmenite smelting processes, and it provides a substantial reduction in energy use and CO₂ emissions.

Conventional ilmenite smelting processes are characterised by high electrical energy consumption. This means that energy savings stand out as a key advantage of the Impril process, resulting in a possible reduction of up to 40% in electricity consumption.

Overall, the lower carbon footprint makes Impril a more sustainability-conscious and environment-friendly choice.

“In comparison to conventional ilmenite smelting approaches, the Impril process has not only proven to be more energy efficient but also improves smelting furnace operability.

“Particularly, it holds a distinct advantage in significantly mitigating slag foaming occurrences, attributed to the lower quantity of generated gas in the smelting stage.

“Sustainable ilmenite smelting would have a positive impact on the development and sustainability of downstream titanium industries such as the production of TiO₂ pigments, and titanium metal and alloys,” Mintek pyrometallurgy division technology development head Dr Xolisa Goso says.

Mintek’s Impril is being positioned as a transformative solution with the potential to help grow the ilmenite smelting industry by improving operational efficiencies and contributing to a more sustainable future.