The present invention is directed to a method for the production of lithium hydroxide (LiOH) directly from lithium chloride (LiCl), without the need for an intermediate production of lithium carbonate or similar. Specifically, the invention teaches a method for producing lithium hydroxide directly from lithium chloride, wherein LiCl is converted to LiOH from a brine, the LiOH is then crystallised to obtain crude lithium hydroxide monohydrate (crude LiOH.Math.H2O) and then undergoes a second crystallization to produce pure LiOH.Math.H2O. Finally, it is dried and packaged.

The present invention is directed to a method for the production of lithium hydroxide (LiOH) directly from lithium chloride (LiCl), without the need for an intermediate production of lithium carbonate or similar. Specifically, the invention teaches a method for producing lithium hydroxide directly from lithium chloride, wherein LiCl is converted to LiOH from a brine, the LiOH is then crystallised to obtain crude lithium hydroxide monohydrate (crude LiOH.Math.H2O) and then undergoes a second crystallization to produce pure LiOH.Math.H2O. Finally, it is dried and packaged.

Processes for regenerating alkali process streams are disclosed herein, including streams containing sodium hydroxide, magnesium hydroxide, and combinations thereof. Systems for regenerating alkali process streams are disclosed herein, including streams containing sodium hydroxide, magnesium hydroxide, and combinations thereof.

Processes for regenerating alkali process streams are disclosed herein, including streams containing sodium hydroxide, magnesium hydroxide, and combinations thereof. Systems for regenerating alkali process streams are disclosed herein, including streams containing sodium hydroxide, magnesium hydroxide, and combinations thereof.

The subject process relates generally to producing an aqueous solution through a simple but highly effective chemical reaction. The aqueous solution is composed of a blended solution with water and an added solubilizer for the chemical reaction. The results produce an ionic solid and an alkaline liquid solution which are useful commercial products, and various applications including but not limited to use as a CO.sub.2 capture solvent.

The subject process relates generally to producing an aqueous solution through a simple but highly effective chemical reaction. The aqueous solution is composed of a blended solution with water and an added solubilizer for the chemical reaction. The results produce an ionic solid and an alkaline liquid solution which are useful commercial products, and various applications including but not limited to use as a CO.sub.2 capture solvent.

A method for recovering Vanadium from a secondary source such as fly ash. Leaching is involved using single or combined acids such as hydrochloric and sulfuric in a temperature range of 20 C. and 100 C. The leaching is performed in sequential operations with recovery of Vanadium in the range of 92%. The recovered Vanadium can be formulated into an electrolyte for redox batteries.

A method for recovering Vanadium from a secondary source such as fly ash. Leaching is involved using single or combined acids such as hydrochloric and sulfuric in a temperature range of 20 C. and 100 C. The leaching is performed in sequential operations with recovery of Vanadium in the range of 92%. The recovered Vanadium can be formulated into an electrolyte for redox batteries.

Processes for regenerating alkali process streams are disclosed herein, including streams containing sodium hydroxide, magnesium hydroxide, and combinations thereof. Systems for regenerating alkali process streams are disclosed herein, including streams containing sodium hydroxide, magnesium hydroxide, and combinations thereof.

Methods are provided for processing a lithium-containing material (e.g., a mineral like spodumene) whereby a lithium sulfate solution derived from the material is reacted with a primary reagent (e.g., Na.sub.2CO.sub.3 or NaOH) to produce a mixed solution of primary lithium product (e.g., Li.sub.2CO.sub.3 or LiOH) and Na.sub.2SO.sub.4. In addition to primary lithium product, a separated Na.sub.2SO.sub.4 solution is produced and converted to a byproduct (e.g., CaSO.sub.4, NaNO.sub.3, NaOH, H.sub.2SO.sub.4) by reaction with a salt chemical (e.g., Ca(NO.sub.3).sub.2) or alkali chemical (e.g., Ca(OH).sub.2), or by electrolysis or electrodialysis. Byproducts are re-used to reduce reagent inputs. Residual lithium in an output solution is reacted with a secondary reagent (e.g., CO.sub.2 from flue gas, or H.sub.3PO.sub.4) to produce secondary lithium products (e.g., Li.sub.2CO.sub.3 or Li.sub.3PO.sub.4), which may be re-used to reduce reagent inputs and increase lithium recovery.