Salt pan control method for efficiently enriching lithium in sodium sulfate subtype salt lake brine

• Main Authors: LIU XIN, MA YANFANG, ZHANG ZHIHONG, HUANG SHOUYAN, DONG SHENGFA, LI KANSHE, ZHANG YONGMING, FU ZHENHAI
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2023
• Subjects: CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; INORGANIC CHEMISTRY; METALLURGY

The invention discloses a salt pan control method for efficiently enriching lithium in sodium sulfate subtype salt lake brine. The salt pan control method for efficiently enriching lithium in sodium sulfate subtype salt lake brine comprises the following steps: alternately carrying out brine drying treatment and freezing treatment on sodium sulfate subtype salt lake original brine; the time of the sun-curing treatment is summer and autumn, and the time of the freezing treatment is winter. According to the method disclosed by the invention, the process of enriching lithium in the sodium sulfate subtype salt lake brine through natural evaporation is effectively interfered and adjusted, and sulfate lithium salt is prevented from being formed after the concentration of lithium is enriched to a certain degree, so that the problem of difficulty in lithium enrichment in the previous evaporation enrichment process is solved; meanwhile, the enrichment multiple of lithium in the evaporation process is low due to precip