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AssigneeLG Chem, Ltd.
InventorsSang Won HAN, Sangbum AHN, Yongbok JEONG, Woochul JUNG, Si Min KIM, Jimyeong KIM, Taeho KIM, Donggyun KANG
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The present invention relates to a process of recovering an alkali metal sulfate, comprising: forming an organic acid fermentation liquid containing an alkali metal salt of organic acid; and adding sulfuric acid to the organic acid fermentation liquid to form and recover an alkali metal sulfate, wherein the alkali metal sulfate has a radioactivity concentration index of 1 or less, and to an alkali metal sulfate crystal comprising a predetermined peak in an X-ray diffraction spectrum (XRD) and having a radioactivity concentration index of 1 or less.
A process of recovering an alkali metal sulfate, comprising:
An alkali metal sulfate crystal having an X-ray diffraction spectrum (XRD) having 5 to 10 peaks at a diffraction angle (2θ±0.2°) of 12 to 32,
Dependencies are inferred from the claim text.