A maiden resource of 3.68 million tonnes has been estimated, with wet screen beneficiation seen as producing 1.59Mt grading 34.68% high purity alumina.
HPA products are used in LEDs, lithium ion batteries and storage capacitors with a 2016 market totalling 25,300 tonnes.
According to forecasts promoted last year by Hill End, the market is set to grow to 46,000t in 2020 and 87,000t in 2024.
Hill End said the initial Yendon resource was sufficiently large to “potentially supply 20% of the world’s current HPA demand for more than 20 years”.
Late last year Hill End said HPA was selling for US$15-20 per kilogram.
The company had hoped to have a maiden resource by late last year, ahead of completion of a pre-feasibility study early this year and a DFS signed-o...