Lithium extraction from a geothermal brine by advanced carbonation processing

A method for extracting lithium from geothermal brines comprising:

• (a) providing a geothermal brine having a temperature range between:
• a lower limit of approximately 30° C.;
• and
• an upper limit of approximately 350° C.;
• (b) adjusting an effective alkalinity in the geothermal brine to a preset value between:
• a lower limit of approximately 0.01;
• and
• an upper limit of approximately 30, using at least one effective alkalinity adjustment step;
• (c) exchanging heat with the geothermal brine using at least one heat exchanger step where the heat exchanger adjusts the temperature of the geothermal brine to between:
• a lower limit of approximately 5° C.;
• and
• an upper limit of approximately 80° C.;
• and
• (d) consequentially generating precipitated lithium.