Product mix from the plant includes over 71% in larger flake sizes with 9% reported as extra-large coarse flake graphite and 24% as large-coarse flake graphite.
The company said 28% was reported as coarse flake, while 10% as medium flake.
Purity levels range between 90% and 95% based on the production processing runs to meet several customer requirements.
The company analyzed samples from production processing of the initial 1,500 tonnes of existing run of mine stockpiles for changes to process optimisation in the commissioning program.
Valence Industries CEO and MD Christopher Darby said: "The results from production processing at our existing plant demonstrate the unique quality and value of the flake graphite from our Uley Graphite project.
"We can produce very coarse flake in volumes and sizes that will demand premium pricing in the graphite market. Multiple customer contracts and multi-year MoUs signed for up to 37,000 tpa attest to the demand for our quality products."
