| 摘要 |
A health-aid chalk using natural clay minerals is provided to realize a health-aid effect and good cost efficiency by using natural substances favorable to the human body, and to avoid the use of harmful slaked lime and calcium carbonate. A health-aid chalk using natural clay minerals is obtained by mixing at least one clay mineral selected from the group consisting of mordenite, clinoptilolite, montmorillonite, analcime and sodalite with kaolinite in a weight ratio of 9:1-1:9 and kneading the mixture to obtain a gel-like slurry; and molding and heat treating the gel-like slurry. Preferably, kaolinite is mixed with sodalite in a weight ratio of 3:7-9:1. |
