FIELD: chemistry.
SUBSTANCE: salt is a mixture of fluorapatite of the formula Ca5(PO4)3F and dicalcium phosphate of the formula CaHPO4×nH2O, where n is 0 to 2, which contains fluorapatite in an amount of 27 to 99.0 wt % and phosphorus in terms of P2O5 in the above salt 35 to 45 wt %.
EFFECT: increasing salt extraction excluding the use of large amounts of water, increasing the efficiency of the decomposition stage.
6 cl, 1 dwg, 1 tbl, 2 ex
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