Method for preparing high-purity lithium solution from salt lake lithium ore

The invention discloses a method for preparing a high-purity lithium solution from salt lake lithium ores, belongs to the technical field of salt lake lithium ores, and aims to solve the problem of insufficient purity of battery-grade lithium carbonate and high-purity lithium carbonate produced from the salt lake lithium ores. The method comprises the steps of pulping, high-pressure carbonization, filter pressing, ion exchange and magnetic foreign matter removal. According to the method, the occurrence form characteristic that the content of calcium and magnesium impurities in the salt lake lithium ore is high is comprehensively considered, the carbonization process and equipment are researched and innovatively designed, the key technical problems in the industrialization process of producing battery-grade lithium carbonate from the salt lake lithium ore are solved, the high-purity lithium bicarbonate solution can be stably produced in batches, and the method is suitable for industrial production. And a new t