RE:RE:RE:RE:Posco America relocates HQ to Washington.....According to the KPI news release where 9 flow rate was first released purity is the 2nd important factor on cost:
The quality of the product stream, quantified by lithium concentration and purity, has a direct impact on the relative size and complexity of the post DLE lithium refining process. Put simply, the more concentrated the lithium, combined with a lower concentration of impurities, the less energy is required to produce a battery grade product.