Аннотация
The article presents the results of physico-chemical research of waste from the phosphorus industry – phosphorus sludge and cottrell dust. The reliability of the experimental results was ensured by the use of generally recognized research methods, as well as reliable physico-chemical and instrumental methods of analysis. The results of the experiment prove the suitability of these types of waste for the production of mineral fertilizers. This, in turn, will make it possible to improve the environmental situation in the southern region of Kazakhstan.