| 摘要 |
PURPOSE: A preparation method of ionic calcium using oyster shells is provided to supply high purity ionic calcium that is highly absorbed into the bodies of men and animals. CONSTITUTION: The preparation method of ionic calcium comprises the steps of: (P110) removing impurities by immersing oyster shells into methyl alcohol for 7-10hrs; (P120) drying; (P130) preparing high purity carbon powder from oak charcoal powder; laying dried oyster shells on carbon powder, (P140) covering cokes on the bottom of a furnace; (P150) sintering at 2500-3000deg.C for 20min; (P160) cooling and (P170) grinding; (P180) sealing; and optionally dissolving ionic calcium powder into water and aging for 4hrs. The high purity carbon powder is obtained by laying carbon powder on the bottom of furnace in a height; covering oak charcoal powder on the carbon powder; heating to 1200-1500deg.C for 20-30min. |
