Egg shell fine powder, method for producing egg shell fine powder, method of using egg shell fine powder and product containing egg shell fine powder

摘要

Problem to be solved: to provide an egg shell fine powder prepared from the eggshell and usable for various purposes.In the present invention, the eggshell was dried at 400 to 600.degree. C. and fired at 1000 to 1200 μ After being finely pulverized with a particle size within a predetermined range, M is further graded by a particle size of a predetermined range. As a result, strong alkalinity of pH 12.5 or more can be obtained, for example, an egg shell fine powder usable as an antiviral agent or an antibacterial agent or a soil improving agent can be obtained.Diagram