The Effects of Different P2O5 Content and Basicity on Phosphorus Enrichment in the CaO-SiO2-FetO-P2O5 Slag System

To improve the additional value of phosphorusenrichment phase in slag, it is necessary to make phosphorus to be enriched in the slag. This paper elaborates the effects of different P2O5 content and basicity on phosphorus enrichment in the CaO-SiO2-FetO-P2O5 slag system through the experiment. Slag morphology can be observed by SEM+EDS and the composition of the phase can be ascertained by XRD. Then Lp and Cp in both phosphorus-enrichment phase and matrix phase were calculated respectively. It has been found that P2O5 content in the slag and the basicity of the slag have effects on the existing form of the phosphorus in the slag, and also influence the distribution ratio of P2O5 in the slag