Australian Syrah Resources has announced that it has successfully produced uncoated battery grade spherical graphite, using natural flake graphite from its Balama Graphite & Vanadium Project in Mozambique.
The battery market currently represents approximately 23% of global flake graphite output and is expected to be a rapidly growing sector due to lithium-ion (Li-ion) battery demand.
Specifications achieved include fixed carbon of 99.96%, d50 of 15.64 microns and a BET surface area of 4.236 m(2)/g. These specifications are consistent with those of leading Chinese manufacturers and have been confirmed by a Li-ion battery anode producer in China.
Samples are to be sent to anode producers for trial coating and electrochemical testing, as well as to all the major Korean and Japanese Li-ion battery producers through Marubeni Corporation.
A preliminary economic study based on a 25,000 tpa scenario will commence shortly according to the company. Uncoated Li-ion battery grade spherical graphite with these specifications currently sells for US$3,500/t whilst coated spherical currently sells for US$7000/t to US$10,000/t.
The International Energy Agency (IEA) 2013 has forecast annual sales of electric vehicles (EVs) of nearly 6 million units by 2020. If these forecasts are accurate, approximately 240,000 tonnes of spherical graphite would be required per annum. Industrial Minerals estimates that it takes 2.5 tonnes of flake graphite on average to make one tonne of spherical graphite.
Accordingly, 240,000 tonnes of spherical graphite will equate to 600,000 tonnes of natural graphite demand per annum. Given that total global flake graphite production in 2013 was approximately 375,000, a 60% increase in supply would be required to satisfy this projected additional demand.