EcoGraf Limited has unveiled groundbreaking results from its Product Qualification Facility (PQF) testwork, demonstrating that its proprietary HFfree® purification technology delivers industry-leading low costs and substantial economic returns. The technology is positioned to provide the lithium-ion battery market with a scalable, cost-competitive, and environmentally responsible alternative to existing graphite purification methods.
Recent process design optimisations have delivered significant efficiency improvements and cost savings, resulting in a remarkable 25% reduction in process operating costs to US$478 per tonne compared to previous estimates. This positions EcoGraf’s HFfree® process at a 34% cost advantage over traditional hydrofluoric acid (HF) purification methods used in China.
The company’s initial 25,000 tonne per annum (tpa) purification facility is projected to deliver impressive financial metrics:
- Pre-tax NPV10 of US$282 million (A$433 million)
- Internal rate of return (IRR) of 42%
- Annual EBITDA of US$42 million
- Initial capital investment of US$95 million (including contingency)
- Payback period of less than 4 years
These projections are based on a US location, with similar metrics expected for a European facility, where the company is focusing particularly on Germany.
EcoGraf’s Managing Director, Andrew Spinks, highlighted the strategic importance of the achievement: “Following extensive process development over the last 4 years, this is a major milestone achievement for our customers, shareholders and Tanzanian developments. It demonstrates the compelling value proposition of linking the Company’s upstream Tanzanian graphite developments with the EcoGraf HFfree® purification facilities.”
The HFfree® technology offers several significant advantages over competing purification methods:
- Produces high-quality battery anode material with 99.99% carbon purity
- Uses readily available reagents suitable for implementation in major battery manufacturing hubs
- Minimal waste generation and low carbon footprint
- Enhanced anode recycling capability
- Easily scalable to meet growing demand
Rising demand and strategic importance
The timing of EcoGraf Ltd. battery anode materials breakthrough couldn’t be better. Global demand for natural flake graphite is forecasted to increase sixfold by 2030, driven primarily by the rapid expansion of lithium-ion batteries used in electric vehicles and energy storage systems.
Adding to the favourable market dynamics, the US Department of Commerce recently announced preliminary anti-dumping duties of 93.5% on anode-grade graphite imported from China, which could result in effective total tariffs of up to 160%. These trade measures are expected to provide strong support for increased long-term graphite prices and accelerate the development of alternative supply chains.
Understanding the HFfree® process advantage
EcoGraf’s patented purification technology represents a significant departure from conventional methods. The process is a multi-step chemical procedure that precisely removes impurities while preserving the important physical and chemical properties of natural graphite specified by battery manufacturers.
In contrast to the dominant Chinese hydrofluoric acid method, which is highly toxic and environmentally damaging, EcoGraf’s HFfree® technology offers a cleaner, safer, and more cost-effective alternative. This is particularly important as many countries ban or restrict the use of hydrofluoric acid, limiting the global scalability of Chinese processes.
The science behind HFfree® purification
EcoGraf HFfree® proprietary purification is a multi-step chemical process using precise conditions to remove impurities. Each step is conducted to preserve the important physical and chemical properties of natural graphite specified by battery manufacturers.
As part of the PQF program over the past 16 months, variations of the flow sheet design were trialled continuously to determine the impacts of each stage and the equipment materials of construction on achieving the target product specifications.
During this phase, operating cost reduction and product quality were a key focus, with significant success in lowering reagent use and water treatment and waste disposal costs. Improvements were also achieved through flowsheet optimisation, equipment selection and materials used, with equipment selections and materials of construction demonstrating effective performance and operating reliability during production campaigns at the PQF.
Vertically integrated supply chain
EcoGraf Ltd. battery anode materials business model extends beyond the purification technology to encompass a complete, vertically integrated supply chain:
- Upstream: The Epanko Graphite Project in Tanzania will provide high-quality natural flake graphite as feedstock
- Midstream: A Mechanical Shaping Facility in Tanzania will process the flake graphite into spherical graphite
- Downstream: EcoGraf HFfree® Purification Facilities located near battery manufacturers will produce high-purity anode material
- Recycling: The same technology will be applied to recycle graphite from spent batteries
The company has already secured patent protection in Australia, the US, South Africa, and East African countries, with additional applications pending in Europe, India, Malaysia, South Korea, Vietnam, and Canada.
“Following extensive process development over the last 4 years, this is a major milestone achievement for our customers, shareholders and Tanzanian developments. It demonstrates the compelling value proposition of linking the Company’s upstream Tanzanian graphite developments with the EcoGraf HFfree® purification facilities to provide a vertically integrated business which will enable customers to reduce their dependence on existing graphite supply chains.”
