The possibility of calcination-separation enrichemnt of carbonate-phosphorite ores from Karatau area has been studied. The calcination of phosphorites was recommended to be carried out in the fluidized bed kiln, the grinding of calcinated phosphorites in a centrifugal impact mill, classification of ground material in a non-rotary air separator. The phosphorite concentrate with a content P2O5 more than 28% and the yield of P2O5 into the concentrate not less than 85% was obtained by using carbonate-phosphorite ores containing 21-23% of P2O5 and 8-10% of CO2.