锂云母精矿制备碳酸锂的研究

Abstract

Abstract: Orthogonal test method was used to discuss the influence of four factors i.e.calcination temperature，sulfuric acid concentration，immersion time，and material ratio on leaching rate of Li₂O from lepidolite concentrate.Results showed that the leaching rate of Li₂O can reach 75% when the lepidolite calcined at 900 ℃ reacted with 70% sulfuric acid in the mass ratio of 1∶1 in an incubator at 130 ℃ for 15 min.Product was characterized by XRD and SEM and results indicated the prepared lithium carbonate was high in purity and had a good application value.

Key words: lepidolite concentrate, sulfuric acid extract, lithium carbonate, leaching rate

CLC Number:

TQ131.11

CHENG Yue, LI Yan-Sun, CHEN Ce-He. Study on preparation of lithium carbonate from lepidolite concentrate [J]. INORGANICCHEMICALSINDUSTRY, 2012, 44(4): 16-.

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Inorganic Acid-Base-Salt Committee of CIESC

Study on preparation of lithium carbonate from lepidolite concentrate

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