| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide egg-shell ion powder obtained through extracting calcium components and magnesium components which are main ingredients of egg shells separated from egg yolk and albumen, via roasting, and diluted with water to be usable as water solution: and to provide a method for producing egg-shell ion powder. <P>SOLUTION: The egg-shell ion powder is produced through the following process: charging granulated raw material egg shells into a roasting furnace; subjecting the egg shells to first roasting to roast the egg shells via direct fire at about 1,300°C in excess air while keeping the temperature in the furnace to be at about 1,000°C, and sufficiently stirring the egg shells until organic materials in the raw material egg shells are burned out and turn into dark red; subjecting the egg shells to second roasting for 2-3 hours in the roasting furnace while keeping the temperature in the furnace at ≥1,300°C until the egg shells turn into red or reddish yellow via direct fire at 1,300-1,500°C for 2-3 hours; subjecting the egg shells left as it is for 3 weeks or more to third roasting via direct fire at 1,300-1,500°C until oxygen radical and hydrogen radical in the egg shells are eliminated to turn into white or diamond color for 2 hours; and pulverizing the egg shells subjected to the third roasting. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
