Resource company Australian Vanadium Limited (AVL) has filed an international patent application for its processing circuit, which comprises an innovative combination of processes to maximise vanadium recovery.
The capacity to cheaply recover vanadium from oxidized and transitional zones typical to VTM deposits around the world is a unique feature of the patent application.
AVL’s process includes reverse flotation, pelletisation, salt-roasting and leaching.
Pelletisation and roasting in a grate-kiln are used in the pyrometallurgy process, which has been found to significantly improve vanadium extraction over ordinary roasting.
A washing stage in the hydrometallurgy process yields a clean iron titanium coproduct, and a combination of nanofiltration and solvent extraction yields ultra-high purity vanadium for niche applications.
Last March, the company was awarded a $49 million manufacturing grant to develop its flagship Australian Vanadium Project which was awarded Federal Major Project Status in September 2019 in recognition of its national strategic significance as a battery and critical metal project.
“The processing patent application by AVL is another important milestone along the way to production for the Company, further enabling the development of the Project, and meeting growing demand for vanadium globally,” said Managing Director, Vincent Algar in a release.
“One of AVL’s many strengths is the depth of vanadium knowledge within the team and its associates. The innovative work by the team during the study phase has culminated in an insightful processing circuit that has benefits to AVL and the wider vanadium industry.”
Last year, the company raised $8.7 million to become the next global vanadium producer.
The Patent Cooperation Treaty recognizes the patent application in 156 countries (PCT).