Abstract
Experimental studies of phase equilibria and liquidus temperatures have been carried out in the systems “FeO”-SiO2 and ZnO-“FeO”-SiO2 at Po2 10−8 atm. Research techniques have been developed to enable the ZnO-containing system to be investigated under reducing conditions controlled by CO-CO2 gas mixture. The experimental approach includes master slag preparation, high-temperature equilibration, quench, and electron probe X-ray microanalysis (EPMA). Phase compositions in the quenched samples were measured by EPMA and used for construction of phase diagram. It was found that the isotherms of the system ZnO-“FeO”-SiO2 at Po2 10−8 atm are significantly different from those in equilibrium with metallic iron and those predicted by FactSage. The presence of ZnO in copper smelting slag significantly increases the liquidus temperature in spinel primary phase field. Partitioning of ZnO in liquid and spinel is also discussed in this paper.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
