Study On Two-Stage Reverse Flotation For Glue Phosphorous Ores And Foam Behavior

The study has obtained satisfactory results by applying Two-Stage Reverse Flotation to the glue phosphorous ores of YiChang in the province of Hubei ,which are rich in Mg,Al and Fe. The results of the experiments ,which are that the percenta ge of P₂O₅ concentrates goes up to 32.87% from 27.27% and that the percentages of the MgO,Fe₂O₃ and Al₂O₃ in the concentrates goes down to 0.93%,1.17% and 1.45% from 2.25%,1.87%,and 3.11%, indicate that GE-609 has an excellent collectivity and solectivity. Moreover, the GE-609 has an advantage of bearing the low temperature. It is capable of working under normal temperature , which reducethe costs of processing largely. Using this reagent the cost for producing concentrates is only 34.74 yuan per ton. So the craft is completely reasonab economicaly . Grinding experiment indicated that the best mesh-of-grind was 75% under the order of 200, The best dosage of collector, depressing agent and conditioning agent were decided with single factor and orthogonal experiments.The industry experiments in Yihua Group indicate that the Ge-609 can wipe off R2O3 evidently and that we can obtain satisfactory concentrates which can be used to manufacturing fertilizer (DAP) with applying the craft of Two-Stage Reverse Flotation.The phenomenon of too much stiff foam and bad results of floation for the mineral syrup has too much mud occuring in the cationic reverse flotation resrains the industrious application of the craft of cationic reverse flotation. this essay deals with the current problem existing in its use through the research of adding antifoam to adjust three mutually the interface behavior. Three antifoam agent are used in the experiments,which are organic bubble regulator fatty alcohol,PAM,inorganic buble regulator CA. The results of experiments indicate that the effects of the inorganic buble regulator CA are the best .Besides,it is used simply and cheap with much sources.The michanism of antifoaming is researched through measuring suface strain , Zeta potential and infrared spectrum. Both antifoam CA and collector can...