| 摘要 |
<p>The invention relates to a process for producing a lithium-containing solution from a lithium-containing raw-material solution, the process comprising the following steps: a) precipitation step, in which a first part of magnesium and calcium is removed from the lithium-containing raw-material solution by precipitation,b) extraction step, in which a second part of calcium and magnesium is removed from the lithium-containing solution obtained from the precipitation step by liquid-liquid extraction, a resultant product being a lithium-containing solution. The invention also relates to equipment for producing a lithium-containing solution from a lithium-containing raw-material solution, the equipment comprising :a precipitation unit arranged to remove a predetermined first part of magnesium and calcium from the lithium-containing raw-material solution by precipitating them,an extraction unit arranged to receive from the precipitation unit the lithium-containing raw-material solution and to remove therefrom a second part of calcium and magnesium by liquid-liquid extraction, the resultant product being a lithium-containing solution, and control means for controlling the operation of the precipitation unit to remove from the lithium-containing raw-material solution said predetermined first part of magnesium and calcium.</p> |
