| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for crystallizing nickel sulfate which can inhibit the generation of scales.SOLUTION: In a method for obtaining a nickel sulfate crystal by feeding a nickel sulfate solution into a crystallizer 13 and crystallizing the same within the crystallizer 13, the nickel concentration within the nickel sulfate solution is set at 90 g/L or above and 185 g/L or below, preferably 121 g/L or above and 140 g/L or below. Since the nickel concentration within the nickel sulfate solution is high, the degree of supersaturation of a slurry within the crystallizer 13 is high, and since nuclei are unlikely to be formed on the inner wall of the crystallizer 13 and the heat conduction plane of a heat exchanger 14, the generation of scales can be inhibited. |
