PROCESS AND EQUIPMENT FOR PRODUCING PURE LITHIUM-CONTAINING SOLUTION

摘要

The invention relates to a process for producing a lithium-containing solution from a lithium-containing raw-material solution, by: a) precipitating a first part of magnesium and calcium from the lithium-containing raw-material solution, b) extracting a second part of calcium and magnesium from the lithium-containing solution 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, including a precipitation unit to remove a first part of magnesium and calcium and an extraction unit to receive the lithium-containing raw-material solution and to remove therefrom a second part of calcium and magnesium by liquid-liquid extraction, and control unit to control the operation of the precipitation unit.

主权项

1. A process for producing a lithium-containing solution from a raw-material brine solution, the process comprising the following steps:
a) precipitation step, in which a first part of magnesium and calcium is removed from the brine 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.