In the process of lithium extraction and precipitation, the concentration of the acidified lithium sulfate solution and the crystallization of sodium sulfate from the lithium precipitation mother liquor need to be achieved through evaporation. In the production process of nickel sulfate/cobalt sulfate, the extracted nickel/cobalt solution needs to be concentrated to a certain concentration before cooling and crystallization. In the production process of lithium hydroxide, the acidified lithium sulfate solution needs to be concentrated to produce lithium hydroxide. The lithium hydroxide solution itself needs to be evaporated, crystallized, and recrystallized to improve purity. In the production of ternary materials, the waste liquid containing ammonia and heavy metal sodium sulfate produced, and the waste water containing sodium sulfate after deamination and heavy metal removal, needs to be evaporated and crystallized to separate sodium sulfate crystals. Processing technology: mainly divided into two processes: salt lake lithium extraction and ore lithium extraction (each process is not the same, it is inconvenient to list them one by one)
