How Renascor has Optimized the Purification Process for Battery Grade Purified Spherical Graphite?
Renascor, an Australian graphite producer, has made significant advancements in the production of battery grade Purified Spherical Graphite (PSG). The company recently entered into a licensing agreement with Dorfner ANZAPLAN, a leading German battery mineral consultancy group, to apply an optimized hydrofluoric (HF) acid-free purification process at its planned downstream manufacturing facility in South Australia. But how does this new process deliver operating efficiencies?
Advantages of the Eco-Friendly Purification Process
Renascor's eco-friendly purification process was developed through optimization trials aimed at enhancing operating efficiencies. The primary goal was to reduce the number of leaching steps required to achieve lithium-ion battery grade PSG. Initial locked-cycle purification tests conducted in December 2021 using Renascor's Siviour natural flake graphite paved the way for the development of this new process.
Confirmation of High Purity Levels
In 2022, new locked-cycle purification trials were carried out using the improved purification process. These trials confirmed that the process consistently meets or surpasses lithium-ion battery anode purity specifications, with carbon (C) levels reaching up to 99.
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99% (compared to the industry standard of 99. 95% C). This high level of purity ensures that the PSG produced by Renascor meets the stringent requirements of the battery industry.
Reduced Operational Risk and Enhanced Environmental Efficiency
One of the key advantages of the optimized purification process is its ability to reduce operational risk. By reducing the number of leaching stages, Renascor minimizes the complexity and potential challenges associated with the purification process. Additionally, the new process improves environmental efficiency by reducing water consumption, making it an eco-friendly option for PSG production.
Integration into the Engineering Design
Renascor's Battery Anode Material Study (BAM Study), recently completed, incorporated the new purification process into the engineering design for the proposed PSG facility. According to the results of the BAM Study, the optimized process allows for a globally competitive PSG gross operating cost. Over the first 10 years, the estimated cost stands at US$1,782 per tonne, with a 40-year mine life cost of US$1,846 per tonne. These cost estimates indicate the economic viability of producing PSG using this innovative purification process.
Future Prospects
With the optimized purification process in place, Renascor is poised to establish itself as a key player in the production of battery-grade Purified Spherical Graphite. The company's commitment to eco-friendliness and operational efficiency ensures that it is well-positioned to meet the growing demand for high-quality PSG in the battery industry. As Renascor progresses with its downstream manufacturing facility in South Australia, it aims to contribute significantly to the production of sustainable and efficient lithium-ion batteries.
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