Brines, present in liquid basins located under the surface of the salar, are extracted thanks to strategically located pumping wells. After being extracted, they are pumped to evaporation ponds through which concentrated brines and salts are obtained.
After a series of evaporation, pumped from the brine is recovered as a concentrated solution of lithium chloride, potassium chloride by-product. It is transported and processed for the obtention of lithium carbonate in a plant located in the Salar del Carmen, near Antofagasta. Another part of brines already concentrated is reinjected to underground deposits of the salar.
Salts deposited in evaporation ponds are duly harvested and transported. Through grinding, floating, drying and prilling processes, Potassium Chloride, Potassium Sulphate and Boric Acid are obtained.