Abstract: The present invention is depicting a chemical separation of phorphorus ore. Phosphorus ore, especially calcareous and clacareous-sillicious phosphorus ore can be effectively converted into several products through chemical separation, which consists of two stages, namely ore pulp reaction and solution regeneration. In the first stage, phosphorus ore is disolved by mixed ammonium salts solvent, but the valence minerals, such as fluoride apatite and quartz don't take part in the reaction and retain their solid state. Thus phosphorus concentrate can be obtained through the separation, the by-products such as the filtrate and gases can be utilized in the solution regeneration. After ammoniation, sulfurization, carbonization and alkalization of the filtrate, the Ca.sup.2+, Mg.sup.2+, Fe.sup.3+, Al.sup.2+, M.sup.2+ ions in it will gradually come out and turn into products, the regenerated solution obtained can be used again and again, thus forming a complete enclosed circulation process.