Influence of Impurities and Additives on the Phase Composition of Reaction Products and Heat Generation in the Fe–C–NaCl–H2O–O2 System

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Thermodynamic analysis is used to assess the effects of various impurities in Fe and additives on the equilibrium phase composition of reaction products and heat generation in the Fe–C–NaCl–H2O–O2 system. It is shown that manganese impurity increases heat generation. Manganese, sulfur, and sulfur compounds decrease the equilibrium concentrations of gaseous species (H2, CH4, CO, H2O) forming during storage. Experimental results indicate that the gas evolution in the system can be reduced by pretreating the Fe powder with sulfur compounds, without significantly reducing the heat generation.

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