China Nonferrous Metallurgy

In this paper, the reaction behavior of Fe of jamesonite in the process of low temperature molten salt smelting is studied. By simulating the reaction process of Fe of the jamesonite in the Na₂CO₃-NaCl molten salt system, XRD was used to analyze the reaction behavior of Fe in the smelting process of FeS, FeS₂, ZnO and carbon powder in the same system.and the Fe distribution on the surface and cross section of the lead-antimony alloy obtained from the smelting of jamesonite was characterized by SEM-EDS.The results show that FeS reacts with ZnO to form FeO, and FeS₂ reacts with Na₂CO₃ to form FeS and Na₂S at 973K. At 1073K, FeS and FeS₂ are reduced with ZnO and carbon powder to form Fe, Fe₃O₄ and ZnS. At 1173K, the reaction products of FeS and FeS2 with ZnO and carbon powder mainly include ZnS, Fe, Fe₃O₄ and Fe₂O₃. Fe elements in FeS and FeS₂ are gradually oxidized to Fe, Fe₃O₄ and Fe₂O₃ with the increase of temperature or the extension of reaction time.Fe is eventually expelled from the reaction system mainly in the form of slag.The study can provide scientific basis for studying the reaction behavior of Fe of jamesonite in low temperature melting of Na₂CO₃-NaCl system.