The ways to prevent formation of water-soluble fluorine compounds when producing phosphate fertilizers

Natural phosphate raw materials contain up to 3.5% of fluorine. In reprocessing natural phosphate raw
material 30 - 100 % of fluorine emits into the environment as toxic compounds. The acid is used for
decomposing the carbon dioxides that are contained in raw materials. The way and technology of
obtaining the phosphate fertilizer has been offered. This technology provides for using the carbonic
acid instead of strong acids. Thus, it is possible to exclude formation of water - soluble fluorine toxic
compounds and use of the acid for decomposing carbon dioxide.