Method for enrichment of phosphate rock

PROCESS FOR ENRICHMENT OF phosphate rock; ON MET phosphate rock CONTACT 12 WITH HOT GAS WITH TEMPERATURE 700 A 1600C FOR LESS PERIOD 60S, THEN ON ELIMINATES FINE BY CLASSIFICATION 16 FOR PHOSPHATE IMPROVES 18 CONTENT OF CADMIUM IN SULFUR AND ORGANIC MATERIALS RELATIVELY LOW AND THIS IS PARTICULARLY FAVORABLE FOR MAKING Phosphoric Acid; THE PRESENT IN PO phosphate rock FULLY RECOVERED IS ALMOST AS ON MAKES NO OFF TO REMOVE THE CALCIUM OXIDE.