A method for reducing the concentration of magnesium and enrichment of lithium chloride ica embossed salt solutions in

摘要

The present invention relates to a process for the enrichment of lithium in the case of simultaneous depletion of magnesium from solutions of chloridic nature, which in relation to the lithium content have high magnesium content, such as for example, in the brines of the salar de uyuni or the brines (bolivia) of the qaidam - basin (china) is the case. According to the invention, this is achieved in that the solution from a minimum content of li⁺ and mg²⁺ for the further concentration of li⁺ such an amount of kcl is supplied, so that potassium carnalite, forms a composition in solution and is approximately in the region of the saturation is established at carnalite, and kcl. Lithium loss due to the formation of lithium carnalite, is prevented in this way and the mgcl₂ as a potassium carnalite, by fixed - - separation of liquid discharged. The kcl, by means of known method of the decomposition of carnalite, obtained again.