| 摘要 |
The present invention relates to a method for preparing high-purity alumina, the method comprising: a mother liquor preparing step for dissolving and aging ordinary aluminum hydroxide; a refining step for adding pulp to absorb impurities from the prepared mother liquor after the mother liquor preparing step; and an obtaining step for obtaining high-purity alumina by adding a seed into the mother liquor and precipitating, and filtering, washing, and recrystalizing, and calcinating the precipitate. Thus, the present invention enables an environmentally-friendly and low-cost preparation of high-purity alumina. |
