METHOD OF PURE HYDRATE OR/AND WATER-FREE CALCIUM HYDROGEN PHOSPHATE PRODUCTION

摘要

The following substances are led into this reaction: Solution of a water-soluble calcium salt that was eventually cleared by alkalisation and filtration of water non-soluble surplus, and raw material containing hydrogen carbonate anion or/and carbonate anion or/and raw material or materials containing carbon dioxide, and ammoniac; The originated coagulate of calcium carbonate is separated from the suspension, it is washed and dried, or it is by heat processing converted to calcium oxide. The obtained powder material is in a dry form or in the form of a suspension, mixed with a trihydrogenphosphoric acid solution. The originated calcium hydrogen phosphate is processed into the product that is suitable for use in food or the cosmetic industry.