Lithium hydroxide freezing sodium precipitation generally adopts two-stage continuous crystallization. The first-stage freezing crystallization adopts a two-stage piston pusher centrifuge (or horizontal spiral discharge filtration centrifuge) to separate most of the mirabilite decahydrate. The mother liquor separated by the first-stage centrifuge enters the second-stage freezing crystallization and then continues to cryoprecipitate a small amount of mirabilite decahydrate. At this time, the crystal content in the frozen feed liquid is relatively low. The mother liquor separated by the second-stage centrifuge enters the next process, and the separated slurry returns to the first-stage centrifuge for centrifugal separation.
Is a heat conduction-based horizontal stirring dryer, its main structure with a jacket.The W-shaped shell is equipped with pairs of hollow low-speed rotating hollow shafts. Several stirring hollow blades are welded on the shafts.
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